Keystone, SD Weather Forecast & Current Conditions

Day: Partly cloudy. Highs in the upper 50s. Northwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Clear. Lows in the upper 30s. West winds 5 to 10 mph.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s. Southwest winds 10 to 15 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then clearing. Lows around 40. Northwest winds 5 to 10 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight.

Day: Mostly sunny. Highs in the mid 50s. Northwest winds around 5 mph, becoming southeast in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the mid 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Day: Partly cloudy. Highs in the mid 60s. West winds 5 to 10 mph, becoming southeast with gusts up to 20 mph this afternoon.

Night: Clear. Lows in the upper 30s. West winds 5 to 10 mph.

Day: Mostly sunny. Highs in the upper 60s. Southwest winds 10 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.

Night: Mostly clear. Lows in the lower 40s. West winds 10 to 15 mph. Gusts up to 25 mph in the evening.

Day: Mostly sunny. Highs around 60. North winds 5 to 10 mph, becoming east in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 60s.

Night: Mostly clear. Lows around 40.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows around 40.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s.

Day: Partly cloudy. Highs in the mid 60s. Northwest winds 5 to 10 mph. Gusts up to 20 mph, increasing to 30 mph this afternoon.

Night: Clear. Lows in the upper 30s. West winds 5 to 10 mph.

Day: Partly cloudy in the morning, then clearing. Highs around 70. Southwest winds 10 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.

Night: Mostly clear. Lows in the mid 40s. West winds 5 to 10 mph with gusts up to 20 mph.

Day: Mostly sunny. Highs around 60. North winds 5 to 10 mph. Gusts up to 20 mph in the morning.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s.

Night: Mostly clear. Lows in the lower 40s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then clearing. Highs around 60.

Day: Partly cloudy. Highs in the mid 50s. Northwest winds 5 to 10 mph with gusts up to 25 mph.

Night: Clear. Lows in the mid 30s. West winds 5 to 10 mph.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s. Southwest winds 5 to 10 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 30 mph in the evening.

Day: Mostly sunny. Highs in the lower 50s. Northwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the mid 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the lower 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the mid 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the upper 50s.

Day: Partly cloudy. Highs around 60. Northwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Clear. Lows in the upper 30s. Northwest winds 5 to 10 mph.

Day: Partly cloudy. Highs in the lower 60s. West winds 5 to 10 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the lower 40s. Northwest winds 5 to 10 mph with gusts up to 25 mph.

Day: Sunny. Highs in the mid 50s. Northeast winds around 5 mph, becoming south in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows around 40.

Day: Mostly sunny. Highs in the upper 50s.

Day: Partly cloudy. Highs in the mid 60s. West winds 5 to 10 mph, increasing to northwest 10 to 20 mph this afternoon. Gusts up to 30 mph.

Night: Clear. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 70s. South winds 5 to 10 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the mid 40s. West winds 5 to 10 mph with gusts up to 20 mph.

Day: Mostly sunny. Highs in the upper 50s. Northwest winds 5 to 10 mph. Gusts up to 20 mph in the morning.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs around 60.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then clearing. Breezy with highs in the lower 60s.

Night: Mostly clear. Lows in the lower 40s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then clearing. Highs around 60.

Day: Partly cloudy. Highs in the mid 60s. West winds 5 to 10 mph with gusts up to 25 mph.

Night: Clear. Lows in the mid 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Mostly sunny and breezy. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph, increasing to 15 to 25 mph with gusts up to 40 mph in the afternoon.

Night: Mostly clear. Lows in the lower 40s. Southwest winds 10 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph after midnight.

Day: Mostly sunny. Highs in the lower 60s. Northwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs around 60.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s.

Day: Mostly sunny and breezy. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Partly cloudy. Highs in the upper 60s. West winds 5 to 10 mph. Gusts up to 20 mph this afternoon.

Night: Clear. Lows in the mid 30s. West winds 5 to 10 mph.

Day: Mostly sunny and breezy. Highs in the upper 60s. Southwest winds 10 to 15 mph with gusts up to 30 mph, increasing to south 15 to 25 mph with gusts up to 40 mph in the afternoon.

Night: Mostly clear. Lows in the lower 40s. West winds 10 to 15 mph. Gusts up to 30 mph in the evening.

Day: Mostly sunny. Highs in the lower 60s. North winds 5 to 10 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the mid 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s.

Day: Mostly sunny this morning, then becoming partly cloudy. Highs in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

Night: Clear. Lows in the mid 30s. Southwest winds 5 to 10 mph.

Day: Mostly sunny and breezy. Highs in the upper 60s. Southwest winds 10 to 15 mph, increasing to 15 to 25 mph in the afternoon. Gusts up to 35 mph.

Night: Mostly clear. Lows in the upper 30s. Southwest winds 10 to 20 mph with gusts up to 30 mph, becoming west 5 to 10 mph after midnight.

Day: Mostly sunny. Highs around 60. North winds 5 to 10 mph.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s.

Day: Mostly sunny. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the lower 60s.

Day: Mostly sunny this morning, then becoming partly cloudy. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph.

Night: Clear. Lows in the upper 30s. Northwest winds 5 to 10 mph.

Day: Mostly sunny. Highs in the mid 60s. West winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Sunny. Highs in the upper 50s. Northwest winds around 5 mph, becoming southeast in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Mostly sunny this morning, then becoming partly cloudy. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph.

Night: Clear. Lows in the mid 30s. Southwest winds 5 to 10 mph.

Day: Mostly sunny. Highs in the upper 60s. Southwest winds 10 to 15 mph with gusts up to 30 mph.

Night: Mostly clear. Lows in the upper 30s. West winds 10 to 15 mph.

Day: Sunny. Highs in the upper 50s. Northwest winds 5 to 10 mph, becoming east in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs around 60.

Day: Partly cloudy this morning, then clearing. Highs in the upper 50s. West winds 5 to 10 mph with gusts up to 20 mph.

Night: Clear. Lows in the upper 30s. Southwest winds 5 to 10 mph. Gusts up to 20 mph after midnight.

Day: Partly cloudy. Highs around 60. South winds 10 to 15 mph with gusts up to 30 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. South winds 5 to 10 mph with gusts up to 20 mph, becoming northeast after midnight.

Day: Mostly sunny. Highs in the mid 50s. North winds 5 to 10 mph.

Night: Partly cloudy. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the mid 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the mid 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then becoming mostly sunny. Highs in the upper 50s.

Day: Partly cloudy. Highs in the lower 60s. Northwest winds 5 to 10 mph. Gusts up to 20 mph this afternoon.

Night: Clear. Lows in the lower 30s. North winds around 5 mph, becoming southeast after midnight.

Day: Partly cloudy. Highs in the lower 60s. South winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.

Night: Mostly clear. Lows in the mid 30s. West winds around 5 mph, becoming north after midnight.

Day: Mostly sunny. Highs in the mid 50s. North winds around 5 mph, becoming south in the afternoon.

Night: Partly cloudy. Lows in the lower 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Partly cloudy. Highs in the lower 60s. West winds 10 to 20 mph with gusts up to 30 mph.

Night: Clear. Lows in the upper 30s. Southwest winds 5 to 10 mph.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph.

Night: Partly cloudy. Lows in the lower 40s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Mostly sunny. Highs in the mid 50s. Northwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs in the upper 50s.

Night: Mostly clear. Lows in the lower 40s.

Day: Partly cloudy in the morning, then clearing. Breezy with highs in the upper 50s.

Night: Mostly clear. Lows in the lower 40s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the lower 40s.

Day: Mostly sunny. Highs in the upper 50s.

Day: Partly cloudy. Highs in the mid 60s. West winds 10 to 15 mph. Gusts up to 20 mph, increasing to 30 mph this afternoon.

Night: Clear. Lows in the mid 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 60s. South winds 10 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. West winds 10 to 15 mph with gusts up to 25 mph.

Day: Mostly sunny. Highs in the lower 60s. Northwest winds 10 to 15 mph.

Night: Partly cloudy. Lows in the upper 30s.

Day: Partly cloudy. Highs around 60.

Night: Partly cloudy in the evening, then clearing. Lows around 40.

Day: Partly cloudy in the morning, then clearing. Breezy with highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the mid 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Mostly sunny this morning, then becoming partly cloudy. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph.

Night: Clear. Lows in the mid 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Mostly sunny. Highs in the mid 60s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s. West winds 10 to 15 mph.

Day: Mostly sunny. Highs in the upper 50s. West winds 5 to 10 mph, becoming southeast in the afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs around 60.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny and breezy. Highs around 60.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Partly cloudy this morning, then clearing. Highs in the lower 60s. Northwest winds 5 to 10 mph with gusts up to 25 mph.

Night: Clear. Lows in the lower 30s. Northwest winds around 5 mph, becoming south after midnight. Gusts up to 20 mph.

Day: Partly cloudy. Highs in the mid 60s. South winds 10 to 20 mph with gusts up to 30 mph.

Night: Mostly clear. Lows in the mid 30s. West winds 5 to 10 mph with gusts up to 25 mph.

Day: Mostly sunny. Highs in the mid 50s. North winds 5 to 10 mph.

Night: Partly cloudy. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs around 60.

Night: Mostly clear. Lows in the mid 30s.

Day: Mostly sunny. Highs in the lower 60s.

Night: Mostly clear. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Partly cloudy this morning, then clearing. Breezy with highs in the lower 60s. West winds 15 to 25 mph.

Night: Mostly clear. Lows in the mid 30s. West winds 10 to 15 mph.

Day: Partly cloudy. Highs in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy. Lows around 40. West winds 10 to 15 mph.

Day: Partly cloudy in the morning, then becoming mostly sunny. Highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy. Lows in the mid 30s.

Day: Partly cloudy. Highs in the upper 50s.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Breezy with highs around 60.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the mid 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.

Day: Mostly sunny this morning, then becoming partly cloudy. Highs in the lower 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

Night: Clear. Lows in the mid 30s. Southwest winds 5 to 10 mph.

Day: Mostly sunny. Highs in the upper 60s. Southwest winds 10 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.

Night: Mostly clear. Lows in the upper 30s. Southwest winds 10 to 20 mph with gusts up to 30 mph, becoming west 5 to 10 mph with gusts up to 20 mph after midnight.

Day: Mostly sunny. Highs in the upper 50s. North winds 5 to 10 mph.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy. Highs in the lower 60s.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 30s.

Day: Mostly sunny. Highs in the lower 60s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then becoming mostly sunny. Highs around 60.

Day: Partly cloudy this morning, then clearing. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 25 mph.

Night: Mostly clear. Lows in the mid 30s. Southwest winds 5 to 10 mph.

Day: Partly cloudy. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 35 mph.

Night: Partly cloudy. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Day: Mostly sunny. Highs in the upper 50s. Northwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the mid 30s.

Day: Partly cloudy. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Mostly sunny. Highs in the upper 50s.

Night: Mostly clear. Lows in the upper 30s.

Day: Partly cloudy in the morning, then clearing. Highs in the upper 50s.