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United States weather

Weather in Cook County, Illinois for April 2026

Your guide to Cook County weather in April - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Cook County usually enjoys a light touch of snow in April.

    • Temperatures

  • In general, the average temperature in Cook County at the beginning of April is 9.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 13.3 °F by the end of April.

    • Rain 🌧️

  • Cook County experiences heavy rainfall in April, with over 20 rainy days and an average total precipitation 109.1 mm.

    • More

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

Average dry days
5
Dry days
Average rainy days
22
Rainy days
Average snowy days
3
Snow days
Average temperatures
12°/5°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Cook County Weather April

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

Temperatures trend during April in Cook County

See the weather trend as well as the moving average line

April weather in Cook County day by day

Click on a date for more information
March May
Date Weather Temperatures Rain Snow More
Apr. 1 Overcast
Overcast
 6° /0° 1.4 mm 0 cm
Apr. 2 Sunny
Sunny
 9° /1° 16.2 mm 0.4 cm
Apr. 3 Overcast
Overcast
 9° /3° 8.3 mm 1 cm
Apr. 4 Cloudy
Cloudy
 13° /4° 12.6 mm 0.6 cm
Apr. 5 Patchy rain possible
Patchy rain possible
 12° /5° 9.8 mm 0.1 cm
Apr. 6 Overcast
Overcast
 11° /4° 2.9 mm 0 cm
Apr. 7 Heavy rain at times
Heavy rain at times
 9° /4° 2.7 mm 0 cm
Apr. 8 Partly cloudy
Partly cloudy
 11° /4° 2.9 mm 0 cm
Apr. 9 Overcast
Overcast
 10° /4° 8.8 mm 0 cm
Apr. 10 Overcast
Overcast
 12° /5° 2.8 mm 0 cm
Apr. 11 Heavy rain at times
Heavy rain at times
 12° /6° 5.2 mm 0 cm
Apr. 12 Patchy rain possible
Patchy rain possible
 14° /6° 1 mm 0 cm
Apr. 13 Overcast
Overcast
 16° /7° 2 mm 0 cm
Apr. 14 Overcast
Overcast
 14° /7° 0 mm 0 cm
Apr. 15 Overcast
Overcast
 13° /6° 1.1 mm 0 cm
Apr. 16 Partly cloudy
Partly cloudy
 11° /3° 10.2 mm 0 cm
Apr. 17 Overcast
Overcast
 10° /4° 1.8 mm 0 cm
Apr. 18 Patchy rain possible
Patchy rain possible
 12° /5° 2.1 mm 0 cm
Apr. 19 Overcast
Overcast
 13° /5° 0.5 mm 0 cm
Apr. 20 Patchy rain possible
Patchy rain possible
 10° /4° 3.4 mm 0 cm
Apr. 21 Heavy rain at times
Heavy rain at times
 13° /5° 7.1 mm 0 cm
Apr. 22 Sunny
Sunny
 13° /5° 2.7 mm 0 cm
Apr. 23 Light rain shower
Light rain shower
 15° /7° 2 mm 0 cm
Apr. 24 Patchy rain possible
Patchy rain possible
 13° /6° 2.9 mm 0 cm
Apr. 25 Cloudy
Cloudy
 10° /4° 1.2 mm 0 cm
Apr. 26 Overcast
Overcast
 11° /3° 2.3 mm 0 cm
Apr. 27 Sunny
Sunny
 16° /6° 0.4 mm 0 cm
Apr. 28 Moderate rain at times
Moderate rain at times
 16° /8° 5.5 mm 0 cm
Apr. 29 Heavy rain at times
Heavy rain at times
 15° /7° 6.3 mm 0 cm
Apr. 30 Cloudy
Cloudy
 12° /6° 3.1 mm 0 cm
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Important Notice
Our weather forecast for Cook County 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 Cook County forecast closer to your planned date for the most up-to-date weather information.
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Cook County in April - FAQ

What are the expected maximum and minimum temperatures in Cook County during April?
During April, expect a variety of temperatures with highs around 12° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cook County during April?
Significant rainfall exceeding 109.1 mm is expected in Cook County during April, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Cook County in April 2026?
Cook County experiences an average snowfall of 2.615 cm during April, occurring over 3 days.
What are the typical wind conditions in Cook County during April?
The average wind speed in Cook County during April is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

Cook County snow forecast April 2026

Track daily snowfall levels and discover Cook County’s snowy potential this April ❄️

April rainfall patterns in Cook County

Explore the daily rainfall trends and prepare for Cook Countys April weather 💧
Top locations in Cook County
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Chicago
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Location coordinates Where is Cook County?

Get accurate weather forecasts for Cook County, located at latitude 41.85 and longitude -87.65. Stay updated with localized weather information tailored for Cook County.

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