| NWS Forecast for: Jefferson County Issued by: National Weather Service Saint Louis, MO Last Update: 117 AM CST Fri Feb 27 2026 |  |
| Rest Of Tonight: Clear. Near steady temperature in the lower 40s. Southwest winds around 5 mph. Friday: Sunny. Highs in the lower 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Friday Night: Mostly clear. Lows in the lower 40s. Southwest winds 5 to 10 mph, becoming northwest after midnight. Saturday: Mostly sunny. A slight chance of rain in the afternoon. Highs in the upper 60s. Southeast winds around 5 mph. Chance of rain 20 percent. Saturday Night: Partly cloudy. Cooler with lows in the lower 30s. North winds 5 to 10 mph with gusts up to 20 mph. Sunday: Mostly cloudy. A slight chance of rain in the afternoon. Much cooler with highs in the upper 40s. Chance of rain 20 percent. Sunday Night: Rain. A slight chance of snow in the evening, then snow after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 80 percent. Monday: Mostly cloudy. A chance of rain with a slight chance of snow in the morning, then a slight chance of rain in the afternoon. Highs in the mid 40s. Chance of precipitation 40 percent. Monday Night: Cloudy with a 50 percent chance of rain. Lows in the mid 30s. Tuesday: Rain likely in the morning, then rain likely with a slight chance of thunderstorms in the afternoon. Not as cool with highs in the mid 50s. Chance of rain 70 percent. Tuesday Night: Rain likely. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the mid 40s. Chance of rain 70 percent. Wednesday: Rain likely with a slight chance of thunderstorms in the morning, then rain likely in the afternoon. Highs in the mid 60s. Chance of rain 60 percent. Wednesday Night: A slight chance of thunderstorms in the evening. Rain likely. Lows in the lower 50s. Chance of rain 70 percent. Thursday: Mostly cloudy with rain likely in the morning, then partly sunny with a chance of rain in the afternoon. Highs around 70. Chance of rain 60 percent. | |
| Zone Forecast: Jefferson County | |
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