Weather forecast for 10 days
Decatur, IL

Weather forecast for the weekend

Saturday, Jun 21.

Sunny
5:26 am

8:29 pm
CDT
Sunny
93°F / 75°F
  • Wind: 16mph SSW
  • Humidity: 67%
  • Precip. probability: 6%
  • Precipitation: 0"
  • UV index: 9
On Saturday, June 21, sun-filled conditions are expected to persist.
Rainfall is not forecasted. Temperature fluctuations between a hot 93.2°F and a moderately hot 75.2°F are anticipated.
It will feel hotter, with a temperature more typical of July's average maximum of 82°F.
Sunrise will be at 5:26 am and sunset at 8:29 pm; the daylight will last for 15h and 3min.

Sunday, Jun 22.

Sunny
5:26 am

8:29 pm
CDT
Sunny
95°F / 75°F
  • Wind: 13mph SSW
  • Humidity: 63%
  • Precip. probability: 6%
  • Precipitation: 0"
  • UV index: 9
On Sunday, June 22, clear and sunny conditions are expected.
Rainfall is not forecasted. The highest temperature will be a sizzling 95°F, while the lowest temperature will be a temperate 75.2°F.
It will be hotter, and the temperature will align more closely with July's average high of 82°F than June's.
Sunrise will be at 5:26 am and sunset at 8:29 pm; the daylight will last for 15h and 3min.

Frequently asked questions

What is the weather forecast for Decatur for Saturday?
On Saturday, uninterrupted sunshine is anticipated.
Will it rain on Saturday in Decatur?
No, it will not rain on Saturday.
What will be the highest temperature on Saturday?
On Saturday, the maximum temperature in Decatur, Illinois, will be 93.2°F, while the minimum temperature will be 75.2°F.
What is the weather forecast for Decatur for Sunday?
On Sunday, sunshine is expected with little to no cloud cover.
Will it rain on Sunday?
No, it will not rain on Sunday.
What will be the maximum temperature in Decatur on Sunday?
On Sunday, the highest temperature will be 95°F, while the lowest temperature will be 75.2°F.
What is the weather forecast for Decatur for the next ten days?
In Decatur, a combination of mostly clear, storm-filled and dull weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is predicted for Tuesday, Wednesday, next Wednesday and Thursday in Decatur. With moderate precipitation of 0.55", Wednesday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 80.6°F and 95°F, while the minimum temperature will vary between 66.2°F and 75.2°F.
Combining with the humidity, the maximum feel-like temperature will range between 86°F and 116.6°F.
What will be the hottest and the coldest days?
The hottest day will be Sunday, with a maximum of 95°F. Tomorrow will be the coldest day, with a maximum temperature of 80.6°F.

Long-term weather forecast

TueJun 17.
  • min.
  • 72°F
Thunderstorms Late
Thunderstorms Late
  • Wind: 7mph SSW
  • Humidity: 76%
  • UV index: 0
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • 5:25 am 8:28 pm CDT
WedJun 18.
  • 81°F
  • 66°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Wind: 24mph SW
  • Humidity: 79%
  • UV index: 6
  • Precip. probability: 49%
  • Precipitation: 0.55"
  • 5:25 am 8:28 pm CDT
ThuJun 19.
  • 84°F
  • 66°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WNW
  • Humidity: 69%
  • UV index: 9
  • Precip. probability: 12%
  • Precipitation: 0"
  • 5:25 am 8:28 pm CDT
FriJun 20.
  • 90°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 12mph S
  • Humidity: 64%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:26 am 8:29 pm CDT
SatJun 21.
  • 93°F
  • 75°F
Sunny
Sunny
  • Wind: 16mph SSW
  • Humidity: 67%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:26 am 8:29 pm CDT
SunJun 22.
  • 95°F
  • 75°F
Sunny
Sunny
  • Wind: 13mph SSW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:26 am 8:29 pm CDT
MonJun 23.
  • 93°F
  • 75°F
Sunny
Sunny
  • Wind: 11mph SSW
  • Humidity: 62%
  • UV index: 9
  • Precip. probability: 11%
  • Precipitation: 0"
  • 5:26 am 8:29 pm CDT
TueJun 24.
  • 93°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph SSW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:27 am 8:29 pm CDT
WedJun 25.
  • 90°F
  • 72°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 7mph SSW
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 31%
  • Precipitation: 0.08"
  • 5:27 am 8:29 pm CDT
ThuJun 26.
  • 88°F
  • 72°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 9mph SW
  • Humidity: 70%
  • UV index: 9
  • Precip. probability: 34%
  • Precipitation: 0.35"
  • 5:27 am 8:29 pm CDT
Looking ahead, conditions suggest a period of bright, thunderstorm-prone and dull weather is forecasted.
Rainfall is anticipated on Tuesday, Wednesday, next Wednesday and Thursday.
Temperature fluctuation will be noticeable in the coming days. The maximum temperature will vary between 80.6°F and 95°F, while nighttime temperatures are expected to vary from 66.2°F to 75.2°F.
The hottest day will be Sunday, with a maximum of 95°F; with the highest temperature of 80.6°F, Wednesday will be the coldest day.
Combining with the humidity, the maximum feel-like temperature may increase vastly and vary between a blazing 86°F and a burning hot 116.6°F.
Updated: Jun 17, 2025 @ 20:44:48 UTC
Published by: Weather U.S. | About Us
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