National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms and Excessive Rainfall Sunday

Scattered strong to severe thunderstorms may pose a risk for damaging wind gusts over the Carolinas, southeast Virginia, and the Tennessee Valley Sunday afternoon then the northern Plains from late afternoon into Sunday night. Monsoonal thunderstorms may cause locally considerable flash, urban, and small stream flooding in the Southwest U.S. the next few days. Read More >

The following tables show the climate information for Rapid City, Gillette, Lead, Winner, Lemmon, Sundance, Spearfish, Newcastle, Hot Springs, and Custer on St. Patrick’s Day, as well as the weather in Rapid City and Gillette for the past 10 St. Patrick’s Days. Average highs around the area on March 17th are in the 40s, with average lows in the 20s.

In 2023, much of the area experienced their coldest St. Patrick's Day of the last decade, with highs generally in the 20s and light snow in some locations. However, in 2024, milder conditions returned, with near-normal temperatures and dry weather.