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Weather in Cook County for May 2025

Your guide to Cook County weather in May - trends and predictions
  • In general, the average temperature in Cook County at the beginning of May is 15.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.9 °F by the end of May.

  • Cook County sees moderate rainfall in May, averaging 6 rainy days.

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Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/9°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Cook County in May average weather

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Temperatures trend during May in Cook County

See the weather trend as well as the moving average line

May weather day by day

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Date Weather Temperatures Rain UV More
May 1 Moderate rain at times
Moderate rain at times
13° /7° 4.3 mm 3
May 2 Patchy rain possible
Patchy rain possible
13° /6° 6 mm 3
May 3 Partly cloudy
Partly cloudy
14° /5° 3.6 mm 4
May 4 Partly cloudy
Partly cloudy
17° /7° 2.4 mm 5
May 5 Partly cloudy
Partly cloudy
16° /9° 0.1 mm 4
May 6 Moderate or heavy rain shower
Moderate or heavy rain shower
16° /9° 5 mm 5
May 7 Moderate or heavy rain shower
Moderate or heavy rain shower
21° /11° 23.2 mm 5
May 8 Moderate or heavy rain shower
Moderate or heavy rain shower
17° /12° 23.9 mm 4
May 9 Overcast
Overcast
12° /8° 4.6 mm 3
May 10 Cloudy
Cloudy
15° /8° 0.5 mm 4
May 11 Partly cloudy
Partly cloudy
18° /11° 1.2 mm 5
May 12 Moderate or heavy rain shower
Moderate or heavy rain shower
20° /12° 7.4 mm 5
May 13 Overcast
Overcast
18° /12° 12.5 mm 5
May 14 Patchy rain possible
Patchy rain possible
12° /8° 8.2 mm 3
May 15 Overcast
Overcast
14° /9° 0.9 mm 3
May 16 Overcast
Overcast
20° /10° 0.4 mm 5
May 17 Partly cloudy
Partly cloudy
17° /11° 3.9 mm 4
May 18 Overcast
Overcast
20° /11° 0.1 mm 5
May 19 Moderate or heavy rain shower
Moderate or heavy rain shower
19° /12° 9.9 mm 5
May 20 Partly cloudy
Partly cloudy
21° /10° 0.8 mm 6
May 21 Partly cloudy
Partly cloudy
23° /14° 4 mm 6
May 22 Partly cloudy
Partly cloudy
21° /13° 0.5 mm 6
May 23 Sunny
Sunny
22° /14° 0 mm 6
May 24 Cloudy
Cloudy
20° /12° 8 mm 5
May 25 Sunny
Sunny
16° /10° 0 mm 5
May 26 Partly cloudy
Partly cloudy
19° /12° 6.9 mm 5
May 27 Partly cloudy
Partly cloudy
18° /12° 2.4 mm 5
May 28 Partly cloudy
Partly cloudy
19° /12° 1.7 mm 5
May 29 Sunny
Sunny
17° /11° 0 mm 5
May 30 Overcast
Overcast
20° /12° 0 mm 5
May 31 Heavy rain at times
Heavy rain at times
23° /14° 1.5 mm 6
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Important Notice
Our weather forecast for Cook County in May 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.

Cook County in May - FAQ

What are the expected maximum and minimum temperatures in Cook County during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cook County during May?
Significant rainfall exceeding 265.8 mm is expected in Cook County during May, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cook County during May?
The average wind speed in Cook County during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Cook County

Explore the daily rainfall trends and prepare for Cook Countys May weather 💧

UV exposure in Cook County during May

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