National Weather Service United States Department of Commerce

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Click a location below for detailed forecast.

Last Map Update: Thu, May 21, 2026 at 10:44:26 am PDT

Summer like conditions are expected for the majority of the week and through the holiday weekend. Morning clouds along the coast are likely, but should give way to sunshine by the afternoon. Inland temperatures are expected to be 10-15 degrees above normal through Sunday. Weak instability in the region brings about a 10% chance of thunderstorms across northern California for Friday and Saturday afternoons. Conditions could begin to change on Memorial Day. We’re watching for the potential for a cold low pressure system to move into the Pacific Northwest Monday into early next week, which could bring a 10-15 degree cooling trend on Monday along with increasing rain chances later in the day. Stay tuned as details become more clear over the coming days.
With warmer temperatures on the way, it’s good to remember that area waterways remain cold and rivers are swift. Wear a life jacket, limit time in cold water, never swim alone and have a flotation device that can be thrown to someone in need.

 

Text Product Selector (Selected product opens in current window)