Another warm and windy day is expected in Sioux Falls, while much cooler weather will be felt in Rapid City and the Black Hills. Highs will be in the mid 80s over the southeast with gusty winds from the south over 30mph. Rapid City will stay in the mid 60s much of the afternoon. Pierre and Aberdeen will still be mild with highs in the lower to middle 70s. Most areas will remain dry.
However, scattered showers are expected overnight tonight, with the best chance from Rapid City to Aberdeen. Some of the rain could mix in with snow in the northern Black Hills as temperatures fall into the upper 30s by tomorrow morning.
Tomorrow's forecast will feature a wide range in temperatures. Highs will struggle to near 50 near Buffalo in the far northwest, to mid and upper 80s in northwest Iowa. It looks like scattered showers will accompany this front, but the best chances of more significant rain will hold off until Friday evening into early Saturday morning. We do expect a swath of moderate to heavy rainfall during this time, mainly along an Aberdeen to Gregory line. The potential for 1 to 2 inches of rain would be possible in some local areas with this set-up. Sioux Falls appears to be on the edge of the heavier rain, but we will continue to monitor that situation over the next 24 hours. Sioux Falls will still be mild tomorrow in the 80s.
High temperatures in most areas will be in the 60s on Saturday as the rain showers depart in the morning. Warmer weather should return to most of the area by Sunday, a trend will continue into early next week.