National Weather Service United States Department of Commerce

The region will squeak out one more warm and dry day today as afternoon temperatures top out a good 10 to 20 degrees above normal. The warmest readings will be across central SD where High Grassland Fire Danger is expected to develop as relative humidity values fall into a 20-30 percent range. The above normal pattern begins to change Tuesday as a front moves through increasing northwest winds that will drive a much cooler air mass into the region. Temperatures will struggle to warm much above the low to mid 40s for highs on Tuesday. With northwest winds expected to gust 30-40 mph, high to very high grassland fire danger will develop across most of the area by the afternoon.