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Weather in Decatur, Illinois for April 2026

Your guide to Decatur weather in April - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Decatur during April is quite rare, with fewer than 2 snowy days on average.
    According to Decatur snow forecast for April 2026, no snow is expected at the beginning of the month.

    • Temperatures

  • An exceptional deviation from the historical average is forecasted for first days of April 2026 in Decatur with the forecasted temperature being 18.9 °F, much lower than usual.

  • In general, the average temperature in Decatur at the beginning of April is 16.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.3 °F by the end of April.

    • Rain 🌧️

  • Decatur in April brings notable rainfall, with an average of 20 rainy days and a total precipitation of 354.3 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
9
Dry days
Average rainy days
20
Rainy days
Average snowy days
1
Snow days
Average temperatures
17°/8°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Decatur Weather April

Move between months or click on a day
March
May
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
26°
2
Partly cloudy
26°
3
Patchy rain possible
23°
4
Light snow showers
13°
5
Patchy rain possible
8°
6
Sunny
9°
7
Light rain shower
13°
8
Overcast
14°
9
Partly cloudy
12°
10
Light drizzle
13°
11
Light rain shower
12°
12
Overcast
14°
13
Partly cloudy
22°
14
Thundery outbreaks possible
21°
15
Patchy light rain with thunder
20°
16
Light rain shower
20°
17
Patchy rain possible
17°
18
Patchy rain possible
19°
19
Overcast
17°
20
Partly cloudy
15°
21
Sunny
16°
22
Overcast
19°
23
Light rain shower
18°
24
Partly cloudy
19°
25
Overcast
21°
26
Light rain shower
17°
27
Light rain shower
20°
28
Patchy rain possible
26°
29
Patchy rain possible
24°
30
Sunny
22°

Temperatures trend during April in Decatur

See the weather trend as well as the moving average line

April weather in Decatur day by day

Click on a date for more information
March May
Date Weather Temperatures Rain Snow More
Apr. 1 Patchy rain possible
Patchy rain possible
 26° /16° 0.2 mm 0 cm
Apr. 2 Partly cloudy
Partly cloudy
 26° /16° 0 mm 0 cm
Apr. 3 Patchy rain possible
Patchy rain possible
 23° /17° 2.3 mm 0 cm
Apr. 4 Light snow showers
Light snow showers
 13° /4° 22.5 mm 0.4 cm
Apr. 5 Patchy rain possible
Patchy rain possible
 8° /3° 99.5 mm 0 cm
Apr. 6 Sunny
Sunny
 9° /1° 0 mm 0 cm
Apr. 7 Light rain shower
Light rain shower
 13° /2° 2.8 mm 0 cm
Apr. 8 Overcast
Overcast
 14° /4° 0 mm 0 cm
Apr. 9 Partly cloudy
Partly cloudy
 12° /7° 5.6 mm 0 cm
Apr. 10 Light drizzle
Light drizzle
 13° /7° 12.3 mm 0 cm
Apr. 11 Light rain shower
Light rain shower
 12° /6° 18.9 mm 0 cm
Apr. 12 Overcast
Overcast
 14° /4° 0 mm 0 cm
Apr. 13 Partly cloudy
Partly cloudy
 22° /7° 0 mm 0 cm
Apr. 14 Thundery outbreaks possible
Thundery outbreaks possible
 21° /11° 0.1 mm 0 cm
Apr. 15 Patchy light rain with thunder
Patchy light rain with thunder
 20° /10° 1 mm 0 cm
Apr. 16 Light rain shower
Light rain shower
 20° /8° 13.3 mm 0 cm
Apr. 17 Patchy rain possible
Patchy rain possible
 17° /11° 3.1 mm 0 cm
Apr. 18 Patchy rain possible
Patchy rain possible
 19° /11° 3.8 mm 0 cm
Apr. 19 Overcast
Overcast
 17° /8° 66.7 mm 0 cm
Apr. 20 Partly cloudy
Partly cloudy
 15° /7° 0.8 mm 0 cm
Apr. 21 Sunny
Sunny
 16° /6° 9.9 mm 0 cm
Apr. 22 Overcast
Overcast
 19° /6° 0 mm 0 cm
Apr. 23 Light rain shower
Light rain shower
 18° /10° 2.7 mm 0 cm
Apr. 24 Partly cloudy
Partly cloudy
 19° /9° 0 mm 0 cm
Apr. 25 Overcast
Overcast
 21° /7° 0.9 mm 0 cm
Apr. 26 Light rain shower
Light rain shower
 17° /7° 7.8 mm 0 cm
Apr. 27 Light rain shower
Light rain shower
 20° /11° 7 mm 0 cm
Apr. 28 Patchy rain possible
Patchy rain possible
 26° /14° 3.2 mm 0 cm
Apr. 29 Patchy rain possible
Patchy rain possible
 24° /16° 11.8 mm 0 cm
Apr. 30 Sunny
Sunny
 22° /11° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Decatur in April is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Decatur forecast closer to your planned date for the most up-to-date weather information.
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Decatur in April - FAQ

What are the expected maximum and minimum temperatures in Decatur during April?

Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Decatur during April?

Significant rainfall exceeding 354.3 mm is expected in Decatur during April, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Decatur in April 2026?

Decatur typically sees 0.405 cm of snowfall during April.

What are the typical wind conditions in Decatur during April?

The average wind speed in Decatur during April is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

Decatur snow forecast April 2026

Track daily snowfall levels and discover Decatur’s snowy potential this April ❄️
On average, Decatur sees 1 snowy days during April, with approximately 0.4 cm of total snowfall.

April rainfall patterns in Decatur

Explore the daily rainfall trends and prepare for Decaturs April weather 💧
Typically, Decatur has 20 rainy days in April with a total of 354.3 mm of rainfall.

UV exposure in Decatur during April

Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️

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Location coordinates Where is Decatur?

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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