Weather forecast for 10 days
Keystone, SD

On Saturday, May 24, expect scattered thunderstorms that may be accompanied by brief heavy rain and thunder.
The chance of rain is high, and precipitation will be moderate. Minor temperature shifts are forecasted, peaking at a maximum of a cool 51.8°F and dropping to a minimum of a chilly 44.6°F.
On Saturday, meteorological data suggests the high will feel more like April, based on a forecast of 51.8°F.
Sunrise will be at 5:17 am and sunset at 8:23 pm; the daylight will last for 15h and 7min.

On Sunday, in Keystone, expect showers with brief dry periods, especially during the afternoon.
The likelihood of rain is low, and light precipitation is anticipated. A temperature range of a refreshing 55.4°F to a frosty 42.8°F is expected.
The anticipated high is colder and better reflects April's normal temperature profile than that of May.
Sunrise will be at 5:16 am and sunset at 8:24 pm; the daylight will last for 15h and 8min.

The weather will be unstable for the next ten days, and a mix of overcast, damp, mostly clear and turbulent weather is predicted.
Rain is predicted for Tuesday, Friday through Sunday and next Thursday.
Noticeable swings in temperature are expected throughout the forecast window. The maximum temperature will vary between 51.8°F and 75.2°F, while the difference in minimum temperatures will be also substantial, as the lowest temperatures will be recorded between 39.2°F and 53.6°F.
With the highest temperature of 75.2°F, next Thursday will be the warmest day; Saturday will be the coldest day, with the highest temperature of 51.8°F.