Decatur, IN Weather Forecast

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Decatur, IN Weather Forecast

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Decatur IN weather  - Clear - 59°F
Clear
59°F
Updated 8:13 pm
Feels Like 63°F
Humidity 100%
Wind WNW 2 mph
Barometer  30.03 in
Dew Point 59°F
Decatur IN weather  - Clear - 15°C
Clear
15°C
Updated 8:13 pm
Feels Like 17°C
Humidity 100%
Wind WNW 3 km/h
Barometer  101.7 kPa
Dew Point 15°C

Decatur Weather Forecast

TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Decatur, IN Weather - Tonight Mostly Clear Decatur, IN Weather - Tuesday Mostly Sunny Decatur, IN Weather - Tuesday Night Mostly Clear Decatur, IN Weather - Wednesday Partly Cloudy Decatur, IN Weather - Wednesday Night Partly Cloudy Decatur, IN Weather - Thursday Chance Of Showers Decatur, IN Weather - Thursday Night Chance Of T-Storm Decatur, IN Weather - Friday Chance Of T-Storm Decatur, IN Weather - Friday Night Chance Of Showers Decatur, IN Weather - Saturday Chance Of Showers Decatur, IN Weather - Saturday Night Chance Of Showers Decatur, IN Weather - Sunday Chance Of Showers
Mostly Clear Mostly Sunny Mostly Clear Partly Cloudy Partly Cloudy Chance of Showers Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers Chance of Showers
Lo: 49°FLo: 9°C Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C Hi: 79°FHi: 26°C
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C Hi: 65°FHi: 18°C
Lo: 51°FLo: 11°C Hi: 65°FHi: 18°C
Lo: 51°FLo: 11°C Hi: 65°FHi: 18°C
POP: 40% POP: 70% POP: 70% POP: 50% POP: 40% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 642 PM EDT Mon Sep 28 2026 Decatur, IN Weather - WeatherWorld.com

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Issued: 638 PM EDT Mon Sep 28 2026

Key Messages

  • Dry and pleasant weather continues through Wednesday with highs in the 70s to around 80.
  • Rain is expected late Thursday into early Friday. Around an inch is anticipated for most locations. No severe weather or significant flooding is expected.
  • Rain showers may linger into the weekend but confidence is low.

Discussion

... Issued at 147 PM EDT Mon Sep 28 2026

Another day with a largely persistence forecast as midlevel ridge and associated surface anticyclone remain locked over the Great L...