National Weather Service United States Department of Commerce

Strong to Severe Thunderstorms from the Southern Plains to the Ohio Valley; Heavy Rain and Flooding in the Southern Plains

Severe thunderstorms are expected from central Texas to middle Tennessee and Kentucky this afternoon into tonight. Large hail and damaging winds are the main threats. Heavy to excessive rainfall may produce areas of flooding today and tonight from central Texas into the lower Mississippi Valley. 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.