National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms and Excessive Rainfall through This Weekend

A multi-day thunderstorm and heavy rain event will impact the south-central U.S. this Memorial Day weekend. Severe thunderstorms may produce large hail, severe gusts, and a possible tornado or two across portions of the central and southern Plains through Monday. The threat for heavy to excessive rainfall and possible flash flooding will return to the south-central U.S., especially in the Ozarks. Read More >

  After two consecutive summers of not reaching 100 degrees at Pierre, the temperature finally reached and surpassed the century mark on July 17th.  At 153 pm CDT on July 17th, the temperature at Pierre topped out at 106 degrees.  It was on September 4th, 2007 (nearly 3 years) when Pierre last reached the century mark when the temperature topped out at 101 degrees. Mobridge has also reached the 100 degree mark this summer which occurred on June 30th.

Recall that last year, Pierre failed to reach 100 degrees in back to back summers (2008 and 2009).  This had never occurred before at Pierre since records have been kept (records in Pierre date back to 1933).  In an average summer, Pierre would normally record a high temperature at or above 100 degrees about 9 times.  In addition, since 1933, there has only been one other year (1993) when temperatures have failed to reach 100 degrees.  Thus, failing to reach this temperature milestone in two consecutive summers was quite a rare event.  It has also been over three years since Aberdeen, Watertown, and Wheaton have reached the 100 degree mark. Listed below are the dates when the temperatures last reached 100 degrees at these three locations.
·         Aberdeen (102F):  July 7, 2007 
·         Watertown (100F): July 7, 2007  
·         Wheaton (100F): - July 8, 2007