Expires:202607271800;;688039 FPUS53 KLSX 271029 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 528 AM CDT Mon Jul 27 2026 MOZ074-084-085-099-271800- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 528 AM CDT Mon Jul 27 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING... .TODAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 111. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 107 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Northwest winds around 5 mph. Heat index values up to 107. .TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 70s. Northeast winds around 5 mph. Chance of rain 30 percent. Heat index values up to 101 early in the evening. .WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast winds around 5 mph. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the upper 80s. .THURSDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SUNDAY...Sunny. Highs in the mid 80s. $$