Crystal Lake Weather in August

What's the weather like in Crystal Lake (Illinois) in August 2024?

The climate in Crystal Lake during August can be summarized as warm, humid and a little damp.

August is in the summer in Crystal Lake and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 16°C (60°F) is normal.

Crystal Lake weather averages (imperial / metric)
Daytime temperature 27.4°C 81.2°F
Nightly temperature 15.5°C 59.8°F
Average temperature 21.4°C 70.5°F
Daily sunshine 9.7 hrs
Avg rainfall 99 mm 3.9 ins
Rainy days 10 days
Sea temperature 21.2°C 70.2°F
Humidity 73%
Windspeed 14kph 9 mph

On average August is the 3rd wettest month of the year in Crystal Lake with around 99mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.7 hours of sunshine per day.

August temperatures in Crystal Lake

Crystal Lake average temperature in August

August rainfall

Crystal Lake average rain in August

August hourly sunshine

Crystal Lake average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Crystal Lake in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Crystal Lake weather stats

Crystal Lake weather statistics
Hottest month: July 28.2°C 82.8°F
Driest month: February 32mm 1.3ins
Sunniest month: July 10.9hrs
Coldest month: January -2.7°C 27.1°F
Wettest month: June 102mm 4ins
Map showing location of Crystal Lake (42.24113, -88.3162) Crystal Lake map pin © Google

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