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City of Decatur, INDecatur, IN 7-Day Night Weather Forecast
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Decatur, IN Weather Forecast
Decatur, IN Weather Forecast Date: 558 AM EDT Sun Sep 20 2026
The area/counties/county of: Adams, including the cities of: Decatur and Berne.or toggle through each period.
Today... Showers with a chance of thunderstorms. Some thunderstorms May produce heavy rainfall. Highs in the mid 70s. Northeast winds 5 to 10 mph. Gusts up to 20 mph this afternoon. Chance of rain 90%.
Tonight... Cloudy. Showers with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80%.
Monday... A slight chance of thunderstorms in the morning. Mostly cloudy with a chance of showers. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40%.
Monday Night... Mostly cloudy. A slight chance of showers in the evening. Lows in the lower 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%.
Tuesday... Mostly cloudy. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
Tuesday Night... Mostly cloudy with a 20% chance of showers. Lows in the lower 50s.
Wednesday... Mostly cloudy with a 20% chance of showers. Highs in the mid 60s.
Wednesday Night... Mostly cloudy. A slight chance of showers in the evening. Lows in the lower 50s. Chance of rain 20%.
Thursday... Mostly cloudy. Highs in the mid 60s.
Thursday Night... Partly cloudy. Lows around 50.
Friday... Partly cloudy. Highs in the upper 60s.
Friday Night... Mostly clear. Lows in the upper 40s.
POP = Probability of Precipitation
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