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Harvester, MO Weather Forecast
Harvester, MO Weather Forecast Date: 1233 PM CDT Thu Sep 10 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
This Afternoon... Mostly cloudy with a chance of showers and thunderstorms. Much cooler with highs in the upper 70s. North winds around 5 mph. Chance of rain 50%.
Tonight... Mostly cloudy. A slight chance of showers in the evening. Patchy fog after midnight. Lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 20%.
Friday... Mostly cloudy. Patchy fog in the morning. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the lower 80s. East winds around 5 mph. Chance of rain 30%.
Friday Night... Partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 30%.
Saturday... Mostly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 30%.
Saturday Night... Partly cloudy. A slight chance of showers in the evening. Lows in the upper 60s. Chance of rain 20%.
Sunday... Partly cloudy. Highs in the upper 80s. Lows in the upper 60s.
Sunday Night... Partly cloudy. Highs in the upper 80s. Lows in the upper 60s.
Monday... Sunny. Highs in the lower 90s. Heat index values up to 100 in the afternoon.
Monday Night... Mostly clear with a slight chance of showers and thunderstorms. Lows around 70. Chance of rain 20%.
Tuesday... Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40%.
Tuesday Night... Partly cloudy. A 40% chance of showers. Lows in the mid 60s. Highs in the lower 80s.
POP = Probability of Precipitation
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