Decatur, Illinois 7-day weather forecast

Written by:
June 2, 2025
ESOlex // Shutterstock

Decatur, Illinois 7-day weather forecast

Stacker created the forecast for Decatur, Illinois using data from OpenWeather. This week's high is 83 °F on Monday, while the low is 58 °F on Monday. There are expected to be 2 sunny days and rain on 4 days this week.

There are currently no weather alerts.

Monday, June 2

- High of 83 °F, low of 58 °F (49% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 5:29 AM, sunset at 8:18 PM
- First quarter moon
1 / 6
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Tuesday, June 3

- High of 82 °F, low of 65 °F (64% humidity)
- Mostly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Fresh breeze (20 mph wind)
- Sunrise at 5:28 AM, sunset at 8:19 PM
2 / 6
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Wednesday, June 4

- High of 72 °F, low of 63 °F (96% humidity)
- Overcast with a 100% chance of rain (11 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 5:28 AM, sunset at 8:20 PM
3 / 6
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Thursday, June 5

- High of 80 °F, low of 62 °F (58% humidity)
- Fair with a 100% chance of rain (4 mm of rain)
- Very high risk of harm from sun exposure (9 UV index)
- Light breeze (6 mph wind)
- Sunrise at 5:28 AM, sunset at 8:20 PM
4 / 6
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Friday, June 6

- High of 79 °F, low of 68 °F (76% humidity)
- Overcast with a 100% chance of rain (25 mm of rain)
- Fresh breeze (21 mph wind)
- Sunrise at 5:27 AM, sunset at 8:21 PM
5 / 6
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Saturday, June 7

- High of 66 °F, low of 58 °F (76% humidity)
- Overcast with a 0% chance of rain
- Gentle breeze (9 mph wind)
- Sunrise at 5:27 AM, sunset at 8:22 PM
6 / 6
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Sunday, June 8

- High of 71 °F, low of 61 °F (73% humidity)
- Overcast with a 100% chance of rain (24 mm of rain)
- Gentle breeze (12 mph wind)
- Sunrise at 5:27 AM, sunset at 8:22 PM

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