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Otego, IL Weather Forecast
Otego, IL Weather Forecast Date: 202 AM CDT Sat Sep 12 2026
The area/counties/county of: Montgomery County Il, including the cities of: Litchfield and Vandalia.or toggle through each period.
Rest of Tonight... Partly cloudy. Near steady temperature in the upper 60s. Light and variable winds.
Saturday... Sunny. Highs around 90. West winds around 5 mph.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. West winds around 5 mph in the evening, becoming light and variable.
Sunday... Partly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Northwest winds 5 to 10 mph. Chance of rain 40%.
Sunday Night... Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 50s. Northeast winds 5 to 10 mph. Chance of rain 40%.
Monday... Mostly sunny. Highs in the mid 80s.
Monday Night... Mostly clear. Lows in the mid 60s. Highs in the mid 90s. Heat index values up to 105.
Tuesday... Mostly clear. Lows in the mid 60s. Highs in the mid 90s. Heat index values up to 105.
Tuesday Night... Mostly clear. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 90s. Chance of rain 20%. Heat index values up to 100.
Wednesday... Mostly clear. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 90s. Chance of rain 20%. Heat index values up to 100.
Wednesday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 40%.
Thursday... Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 40%.
Thursday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Highs in the mid 80s. Chance of rain 30%.
POP = Probability of Precipitation
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