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Pierson, IL Weather Forecast
Pierson, IL Weather Forecast Date: 932 PM CST Thu Nov 05 2026
The area/counties/county of: Piatt, including the city of Monticello.or toggle through each period.
Rest of Tonight... Cloudy with a chance of drizzle. A chance of rain late this evening, then a slight chance of rain. Lows in the lower 40s. Northwest winds around 10 mph, becoming north. Chance of rain 40%.
Friday... Partly sunny in the morning, then clearing. Highs around 50. North winds 10 to 15 mph.
Friday Night... Mostly clear. Cooler with lows around 30. Northwest winds 5 to 10 mph.
Saturday... Sunny. Highs in the lower 50s. Northwest winds around 5 mph.
Saturday Night... Mostly clear. Lows around 30. West winds around 5 mph.
Sunday... Mostly clear. Highs in the lower 60s. Lows in the lower 30s.
Sunday Night... Mostly clear. Highs in the lower 60s. Lows in the lower 30s.
Monday... Sunny. Highs in the upper 60s.
Monday Night... Clear. Lows in the upper 30s. Highs in the mid 60s.
Tuesday... Clear. Lows in the upper 30s. Highs in the mid 60s.
Tuesday Night... Mostly clear. Lows in the mid 30s. Highs in the lower 60s.
Wednesday... Mostly clear. Lows in the mid 30s. Highs in the lower 60s.
POP = Probability of Precipitation
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