Decatur (IL)
10 day weather forecast for Decatur
Thursday, November 5th, 2026, at 07:38 PM
Today
16° 9°
Tomorrow
11° 4°
Saturday
11° 1°
Sunday
16° 3°
Monday
20° 6°
Tuesday
18° 8°
Wednesday
16° 6°
more
Decatur Weather Pages
Decatur weather forecast
The weather forecast for Decatur over the next 5 days indicates chilly conditions with temperatures ranging from 11 °C to 20 °C.
Light rain is expected on today.
Wind speeds are expected to be strong, averaging around 24.1 km/h.
Decatur 14 days weather forecast
This weeks weather in Decatur. Click on a date for detailed forecasts
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Access Decatur weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Decatur long range weather forecast
30 day weather forecast for Decatur
Important Notice
Our Decatur long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.
Rain Forecast for the Next 14 Days in Decatur
Little or no rain is expected over the next 14 days. Click a day for details.
Decatur Wind Speed Forecast Chart
The windiest day is today, with winds up to 24.1 km/h from the W. The calmest day is Monday 16. The average daily maximum is 15.6 km/h.
Thu. 5
24.1 km/h
W · Moderate breeze
Fri. 6
23.4 km/h
N · Moderate breeze
Sat. 7
11.9 km/h
NW · Light breeze
Sun. 8
16.2 km/h
SW · Gentle breeze
Mon. 9
20.9 km/h
SW · Moderate breeze
Tue. 10
13.7 km/h
W · Gentle breeze
Wed. 11
9.7 km/h
NW · Light breeze
Thu. 12
22 km/h
NW · Moderate breeze
Fri. 13
13 km/h
N · Gentle breeze
Sat. 14
13.3 km/h
SW · Gentle breeze
Sun. 15
13.7 km/h
SW · Gentle breeze
Mon. 16
7.9 km/h
W · Light breeze
Tue. 17
11.2 km/h
S · Light breeze
Wed. 18
18 km/h
S · Gentle breeze
CalmLight breezeGentle breezeModerate breezeFresh breeze
Frequently asked questions about the weather in Decatur
How warm is it in Decatur over the next 14 days?
Over the next two weeks, temperatures in Decatur are expected to range from around 0 °C on the coldest nights up to about 20 °C on the warmest days. Use this range to plan what to pack and wear.
Will it rain in Decatur in the next two weeks?
No significant rain is expected in Decatur over the next two weeks, so you can plan for mostly dry conditions.
How windy is it in Decatur?
Maximum wind speeds in Decatur are forecast to reach about 24.1 km/h at their peak over the next 14 days.
When is the best time to visit Decatur?
For a month-by-month look at temperatures and rainfall, see our best time to visit Decatur guide.
How accurate is the 14-day forecast for Decatur?
Our Decatur forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.
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Get accurate weather forecasts for Decatur, located at latitude 39.84 and longitude -88.955. Stay updated with localized weather information tailored for Decatur.
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