O'Brien Lake, MT Weather Forecast & Current Conditions

Night: Mostly clear early in the evening then becoming mostly cloudy. Areas of fog after midnight. Lows in the 30s.

Day: Mostly cloudy with a 20 percent chance of rain. Patchy fog in the morning. Highs in the 60s.

Night: Mostly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s.

Day: Partly cloudy. Patchy fog in the morning. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Lows in the 30s.

Day: Mostly sunny. Highs in the 70s.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Highs in the 70s to lower 80s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Partly cloudy. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Highs in the upper 60s to mid 70s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Areas of fog in the late evening and overnight. Lows in the mid 30s to lower 40s.

Day: Mostly cloudy with a 20 percent chance of rain. Areas of fog in the morning. Highs in the 50s to lower 60s.

Night: Mostly cloudy. Areas of fog after midnight. Lows in the mid 30s to lower 40s.

Day: Partly cloudy. Areas of fog in the morning. Highs in the upper 50s to mid 60s. Southwest winds to 15 mph.

Night: Mostly clear. Areas of fog after midnight. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the 60s.

Night: Mostly clear. Lows in the mid 30s to lower 40s.

Day: Mostly sunny. Highs in the mid 60s to lower 70s.

Night: Mostly clear. Lows in the 40s.

Day: Partly cloudy. Highs in the mid 60s to lower 70s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the 60s.

Night: Partly cloudy. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Highs in the 60s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s.

Day: Mostly cloudy with a 20 percent chance of rain. Areas of fog in the morning. Highs in the upper 50s to mid 60s.

Night: Mostly cloudy in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Patchy fog in the morning. Highs in the mid 60s to lower 70s.

Night: Mostly clear. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Patchy fog in the morning. Highs in the mid 60s to lower 70s.

Night: Mostly clear. Lows in the 30s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Lows in the 40s.

Day: Mostly sunny. Highs in the 70s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Lows in the 40s.

Day: Partly cloudy. Highs in the upper 60s to mid 70s.

Night: Mostly cloudy. Lows in the upper 30s to mid 40s.

Day: Mostly cloudy. Highs in the mid to upper 60s.

Night: Mostly cloudy. Lows in the upper 30s to mid 40s.

Day: Sunny. Highs in the upper 60s to lower 70s.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Mostly clear. Highs in the upper 60s to upper 70s. Lows in the 40s.

Day: Mostly clear. Highs in the upper 60s to upper 70s. Lows in the 40s.

Day: Mostly clear. Highs in the upper 60s to upper 70s. Lows in the 40s.

Day: Mostly clear. Highs in the upper 60s to upper 70s. Lows in the 40s.

Day: Mostly clear. Highs in the upper 60s to upper 70s. Lows in the 40s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the late evening and early morning. Areas of fog late in the night. Lows in the upper 30s to mid 40s.

Day: Mostly cloudy. Areas of fog in the morning. A 20 percent chance of rain in the afternoon. Highs in the 60s.

Night: Mostly cloudy in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Patchy fog in the morning. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Patchy fog after midnight. Lows in the 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the 70s.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the mid 40s to lower 50s.

Day: Partly cloudy. Highs in the mid 70s to lower 80s.

Night: Partly cloudy. Lows in the mid 40s to lower 50s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Partly cloudy. Lows in the 40s.

Day: Partly cloudy. Highs in the 70s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s. Southwest winds up to 10 mph.

Day: Partly sunny. Highs 47 to 55. West winds up to 10 mph.

Night: Mostly cloudy. Lows 37 to 43. Southwest winds up to 15 mph. Gusts up to 30 mph after midnight.

Day: Not as cool. Mostly sunny. Highs 52 to 62. Southwest winds 10 to 20 mph with gusts to around 35 mph.

Night: Partly cloudy. Lows 39 to 45. West winds up to 15 mph. Gusts up to 30 mph in the evening.

Night: Mostly clear. Highs 53 to 61. Lows around 40.

Night: Mostly clear. Highs 58 to 68. Lows 44 to 50.

Night: Breezy. Partly cloudy. Highs 59 to 69. Lows 45 to 51.

Day: Partly cloudy. Highs 54 to 66. Lows in the mid 40s.

Day: Partly cloudy. Highs 54 to 66. Lows in the mid 40s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 30s. Southeast winds up to 10 mph.

Day: Mostly cloudy in the morning then clearing. Highs in the upper 50s. Northwest winds up to 5 mph shifting to the northeast in the afternoon.

Night: Mostly cloudy. Lows in the lower 40s. Southeast winds 5 to 10 mph shifting to the southwest after midnight.

Day: Mostly cloudy in the morning then clearing. Highs in the upper 60s. West winds 5 to 15 mph with gusts to around 30 mph.

Night: Partly cloudy. Lows in the lower 40s. West winds up to 10 mph. Gusts up to 25 mph in the evening.

Day: Sunny. Highs in the lower 60s.

Night: Partly cloudy. Lows around 40.

Night: Mostly clear. Highs in the upper 60s. Lows in the upper 40s.

Night: Partly cloudy. Highs in the mid 70s. Lows around 50.

Day: Partly cloudy. Highs in the upper 60s. Lows in the mid 40s.

Day: Partly cloudy. Highs in the upper 60s. Lows in the mid 40s.

Night: Partly cloudy. Lows in the lower to mid 40s.

Day: Partly sunny. Highs in the upper 60s to lower 70s.

Night: Mostly cloudy. Lows in the 40s.

Day: Sunny. Highs in the lower to mid 70s.

Night: Mostly clear. Lows in the 40s.

Night: Mostly clear. Highs in the mid 70s. Lows in the 40s.

Night: Mostly clear. Highs in the lower 80s. Lows in the lower 40s to lower 50s.

Day: Mostly clear. Highs in the 70s. Lows in the lower 40s to lower 50s.

Day: Mostly clear. Highs in the 70s. Lows in the lower 40s to lower 50s.

Day: Mostly clear. Highs in the 70s. Lows in the lower 40s to lower 50s.

Night: Partly cloudy. Lows in the lower to mid 40s. Light wind.

Day: Partly sunny. Highs in the upper 60s to lower 70s. Light wind.

Night: Mostly cloudy. Lows in the 40s. Light wind.

Day: Sunny. Highs in the lower to mid 70s. Light wind.

Night: Mostly clear. Lows in the mid to upper 40s. Light wind.

Night: Mostly clear. Highs in the mid 70s. Lows in the 40s.

Day: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Night: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Day: Partly cloudy. Highs in the lower to mid 70s. Lows in the mid 40s to lower 50s.

Day: Partly cloudy. Highs in the lower to mid 70s. Lows in the mid 40s to lower 50s.

Night: Partly cloudy early in the evening then becoming mostly cloudy. Lows in the upper 30s. East winds up to 10 mph.

Day: Mostly cloudy in the morning then clearing. Highs in the upper 50s. Southeast winds up to 5 mph shifting to the northeast around 5 mph in the afternoon.

Night: Mostly cloudy. Lows in the upper 30s. Southeast winds up to 10 mph.

Day: Warmer. Mostly cloudy in the morning then clearing. Highs around 70. Southwest winds up to 10 mph shifting to the west with gusts to around 30 mph in the afternoon.

Night: Partly cloudy. Lows in the lower 40s. Northwest winds 5 to 15 mph.

Day: Sunny. Highs in the lower 60s.

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

Night: Mostly clear. Highs in the upper 60s. Lows in the mid 40s.

Night: Partly cloudy. Highs in the upper 70s. Lows in the upper 40s.

Day: Partly cloudy. Highs in the lower 70s. Lows in the lower 40s.

Day: Partly cloudy. Highs in the lower 70s. Lows in the lower 40s.

Night: Partly cloudy until early morning then becoming mostly cloudy. Patchy fog in the late evening and overnight. Lows in the mid 30s to lower 40s.

Day: Mostly cloudy. A 20 percent chance of rain in the morning. Patchy fog in the morning. Highs in the upper 50s to mid 60s.

Night: Mostly cloudy in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Areas of fog after midnight. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s.

Night: Mostly clear. Lows in the mid 30s to lower 40s.

Day: Sunny. Highs in the 70s.

Night: Mostly clear. Lows in the 40s.

Day: Partly cloudy. Highs in the 70s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the mid 60s to lower 70s.

Night: Partly cloudy. Lows in the upper 30s to mid 40s.

Day: Partly cloudy. Highs in the upper 60s to mid 70s.

Night: Partly cloudy. Lows in the lower to mid 40s. Light wind.

Day: Partly sunny. Highs in the upper 60s to mid 70s. Light wind.

Night: Mostly cloudy. Lows in the mid to upper 40s. Light wind.

Day: Sunny. Highs in the 70s. Light wind.

Night: Mostly clear. Lows in the mid to upper 40s. Light wind.

Day: Mostly clear. Highs in the mid 70s to mid 80s. Lows in the mid to upper 40s.

Day: Mostly clear. Highs in the mid 70s to mid 80s. Lows in the mid to upper 40s.

Night: Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 70s to lower 80s.

Day: Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 70s to lower 80s.

Day: Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 70s to lower 80s.

Day: Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 70s to lower 80s.

Night: Partly cloudy. Patchy fog after midnight. Lows near 40.

Day: Mostly cloudy. Patchy fog in the morning. Highs in the mid to upper 60s.

Night: Mostly cloudy in the evening then clearing. Lows in the lower to mid 40s.

Day: Mostly sunny. Patchy fog in the morning. Highs in the lower to mid 70s.

Night: Partly cloudy. Lows in the lower to mid 40s.

Day: Mostly sunny. Areas of fog in the morning. Highs in the lower to mid 70s.

Night: Mostly clear. Lows near 40.

Day: Sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the mid to upper 40s.

Day: Partly cloudy. Highs near 80.

Night: Partly cloudy. Lows in the mid to upper 40s.

Day: Mostly sunny. Highs in the lower to mid 70s.

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

Day: Mostly sunny. Highs in the mid to upper 70s.

Night: Mostly cloudy. Lows in the mid 30s to mid 40s.

Day: Mostly cloudy. Highs in the 60s.

Night: Cloudy. Lows in the upper 30s to upper 40s.

Day: Sunny. Highs in the upper 60s to mid 70s.

Night: Partly cloudy. Lows in the upper 30s to upper 40s.

Day: Partly cloudy. Highs in the lower 70s to lower 80s. Lows in the lower 40s to lower 50s.

Day: Partly cloudy. Highs in the lower 70s to lower 80s. Lows in the lower 40s to lower 50s.

Day: Partly cloudy. Highs in the lower 70s to lower 80s. Lows in the lower 40s to lower 50s.

Day: Partly cloudy. Highs in the lower 70s to lower 80s. Lows in the lower 40s to lower 50s.

Day: Partly cloudy. Highs in the lower 70s to lower 80s. Lows in the lower 40s to lower 50s.

Night: Colder. Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 40s. Northwest winds up to 5 mph.

Day: Mostly cloudy in the morning then becoming mostly sunny. Highs around 60. North winds up to 5 mph shifting to the northeast in the afternoon.

Night: Mostly cloudy. Lows in the lower 40s. Southeast winds up to 5 mph shifting to the southwest after midnight.

Day: Warmer. Mostly sunny. Highs in the lower 70s. Southwest winds up to 10 mph. Gusts up to 30 mph in the afternoon.

Night: Partly cloudy. Lows in the mid 40s. West winds up to 10 mph. Gusts up to 25 mph in the evening.

Day: Sunny. Highs in the mid 60s.

Night: Partly cloudy. Lows in the lower 40s.

Night: Mostly clear. Highs in the lower 70s. Lows in the upper 40s.

Day: Mostly sunny. Highs in the upper 70s.

Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s.

Day: Sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the mid 40s. Highs in the lower 70s.

Night: Partly cloudy early in the evening then becoming mostly cloudy. Lows around 40. East winds up to 10 mph.

Day: Mostly cloudy in the morning then clearing. Highs around 60. Southeast winds up to 10 mph.

Night: Mostly cloudy. Lows in the upper 30s. Southeast winds up to 10 mph with gusts to around 25 mph.

Day: Warmer. Partly sunny in the morning then clearing. Highs 68 to 74. South winds up to 10 mph shifting to the west in the afternoon.

Night: Partly cloudy. Lows in the lower 40s. Northwest winds up to 10 mph.

Day: Sunny. Highs in the mid 60s.

Night: Partly cloudy. Lows around 40.

Night: Mostly clear. Highs in the upper 60s. Lows 42 to 48.

Day: Warmer, sunny. Highs 76 to 82.

Night: Partly cloudy. Lows around 50.

Day: Sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the mid 40s. Highs in the lower 70s.

Night: Partly cloudy until early morning then becoming mostly cloudy. Patchy fog through the night. Lows in the mid 30s to lower 40s.

Day: Partly cloudy. Patchy fog in the morning. Highs in the mid 60s to lower 70s.

Night: Partly cloudy. Patchy fog. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Patchy fog in the morning. Highs in the 70s.

Night: Mostly clear. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Patchy fog in the morning. Highs in the 70s.

Night: Mostly clear. Lows in the 30s to lower 40s.

Day: Mostly sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the 40s to lower 50s.

Day: Partly cloudy. Highs in the 70s to lower 80s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the 70s.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Highs in the 70s.

Night: Colder. Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Lows in the upper 30s. East winds up to 5 mph.

Day: Mostly cloudy in the morning then clearing. Highs in the lower 60s. Northeast winds up to 5 mph.

Night: Mostly cloudy. Lows in the upper 30s. East winds up to 5 mph shifting to the south after midnight.

Day: Warmer. Mostly sunny. Highs in the mid 70s. Southwest winds up to 10 mph.

Night: Mostly clear. Lows in the lower 40s. Northwest winds up to 10 mph.

Day: Sunny. Highs in the upper 60s.

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

Night: Mostly clear. Highs in the lower 70s. Lows in the mid 40s.

Night: Partly cloudy. Highs in the lower 80s. Lows in the upper 40s.

Day: Sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the lower 40s. Highs in the mid 70s.

Night: Partly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s. Northwest winds to 15 mph in the evening.

Day: Mostly cloudy. Patchy fog in the morning. Highs in the 60s.

Night: Mostly cloudy in the evening then clearing. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s. Southwest winds to 15 mph.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Lows in the mid 30s to lower 40s.

Day: Mostly sunny. Highs in the 70s.

Night: Mostly clear. Lows in the 40s.

Day: Partly cloudy. Highs in the 70s.

Night: Partly cloudy. Lows in the 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Mostly clear. Lows in the upper 30s to mid 40s.

Day: Mostly sunny. Highs in the upper 60s to mid 70s.

Night: Partly cloudy. Lows in the 40s. Light wind, becoming northeast 5 to 10 mph overnight.

Day: Partly sunny. Highs in the upper 60s to mid 70s. Northeast wind 5 to 10 mph in the morning, becoming light and variable.

Night: Mostly cloudy. Lows in the mid to upper 40s. Light wind.

Day: Sunny. Highs in the mid to upper 70s. Southwest wind 5 to 10 mph.

Night: Mostly clear. Lows in the mid 40s to lower 50s. West wind 5 to 10 mph.

Day: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Night: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Day: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Day: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.

Day: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the mid 40s to lower 50s.