Keystone, SD 14 Day Weather - 57751 WeatherWorld.com

Warm and summery near 87°F 30°C, periods of heavy thunderstorms, with increasing humidity and steady pressure. Winds turning from the NE to the WSW at 5 mph 8 km/h.

Balmy with temperatures reaching 85°F 29°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the WSW at 17 mph 27 km/h. Gusts up to 26 mph 42 km/h.

Enjoyable around 77°F 25°C, sunny throughout the day, with steady humidity and steady pressure. Winds decreasing from NW 12 mph 19 km/h to W 4 mph 7 km/h.

Warm temperatures up to 80°F 27°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds swinging from the SSE to the SW at 4 mph 7 km/h.

Mild with a high of 79°F 26°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the NNW to the W at 4 mph 7 km/h.

Warm and summery near 83°F 28°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.

Balmy with temperatures reaching 82°F 28°C, overcast through the afternoon, turning sunny this evening, with increasing humidity and steady pressure. Winds turning from the W to the N at 13 mph 20 km/h.

Cool with a high near 62°F 16°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure.

Mild temperatures up to 78°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the S to the SSW at 13 mph 21 km/h. Gusts up to 25 mph 40 km/h.

Very warm with a high of 88°F 31°C, overcast throughout the day, with lower humidity and steady pressure. Winds moving from the W to the WSW at 10 mph 17 km/h. Gusts up to 24 mph 38 km/h.

Warm and summery near 82°F 28°C, overcast throughout the day, with increasing humidity and steady pressure. Winds swinging from the NNE to the SSW at 8 mph 13 km/h.

Balmy with temperatures reaching 84°F 29°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds easing from WSW 14 mph 23 km/h to W 4 mph 7 km/h.

Enjoyable around 77°F 25°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds turning from the SSW to the SW at 5 mph 8 km/h.

Cool and brisk at 49°F 9°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds decreasing from WNW 34 mph 55 km/h to WSW 8 mph 12 km/h. Gusts up to 21 mph 33 km/h.