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Weather in Cook County for August 2025

Your guide to Cook County weather in August - trends and predictions
  • In general, the average temperature in Cook County at the beginning of August is 26.1 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 26.6 °F by the end of August.

  • The climate of Cook County in August is notably wet, with an average of 14 rainy days.

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Average dry days
17
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/19°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Cook County in August average weather

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Temperatures trend during August in Cook County

See the weather trend as well as the moving average line

August weather day by day

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Date Weather Temperatures Rain UV More
Aug. 1 Patchy rain possible
Patchy rain possible
29° /21° 3.8 mm 6
Aug. 2 Overcast
Overcast
27° /21° 1.6 mm 6
Aug. 3 Overcast
Overcast
28° /21° 0.1 mm 6
Aug. 4 Patchy rain possible
Patchy rain possible
27° /20° 0.3 mm 7
Aug. 5 Heavy rain at times
Heavy rain at times
26° /21° 3.8 mm 6
Aug. 6 Patchy rain possible
Patchy rain possible
22° /19° 10.2 mm 5
Aug. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
24° /18° 3.5 mm 6
Aug. 8 Patchy rain possible
Patchy rain possible
26° /18° 0.6 mm 6
Aug. 9 Overcast
Overcast
25° /17° 0 mm 6
Aug. 10 Patchy rain possible
Patchy rain possible
25° /15° 0.2 mm 6
Aug. 11 Patchy rain possible
Patchy rain possible
26° /17° 0.5 mm 6
Aug. 12 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /18° 4.5 mm 6
Aug. 13 Patchy rain possible
Patchy rain possible
25° /18° 0.7 mm 7
Aug. 14 Moderate or heavy rain shower
Moderate or heavy rain shower
24° /19° 12.7 mm 6
Aug. 15 Patchy rain possible
Patchy rain possible
23° /17° 6.7 mm 5
Aug. 16 Overcast
Overcast
28° /18° 8 mm 6
Aug. 17 Moderate or heavy rain shower
Moderate or heavy rain shower
24° /18° 10.9 mm 6
Aug. 18 Sunny
Sunny
24° /18° 0.7 mm 6
Aug. 19 Sunny
Sunny
25° /18° 0 mm 6
Aug. 20 Sunny
Sunny
26° /19° 0 mm 7
Aug. 21 Overcast
Overcast
23° /18° 0 mm 6
Aug. 22 Overcast
Overcast
26° /18° 0 mm 6
Aug. 23 Overcast
Overcast
31° /20° 0 mm 8
Aug. 24 Cloudy
Cloudy
33° /20° 0.1 mm 8
Aug. 25 Cloudy
Cloudy
28° /20° 2.6 mm 6
Aug. 26 Overcast
Overcast
28° /20° 1 mm 6
Aug. 27 Cloudy
Cloudy
28° /21° 0 mm 6
Aug. 28 Sunny
Sunny
26° /19° 2.3 mm 7
Aug. 29 Light rain shower
Light rain shower
27° /19° 2.3 mm 6
Aug. 30 Overcast
Overcast
25° /19° 8.4 mm 6
Aug. 31 Sunny
Sunny
24° /18° 0.4 mm 7
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Important Notice
Our weather forecast for Cook County in August 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 August - FAQ

What are the expected maximum and minimum temperatures in Cook County during August?
During August, expect a variety of temperatures with highs around 26° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cook County during August?
Moderate rainfall is anticipated in Cook County during August, with a total of 75.8 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cook County during August?
The average wind speed in Cook County during August is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Cook County

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

UV exposure in Cook County during August

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