Rock Island Weather in August

What's the weather like in Rock Island (Illinois) in August 2024?

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

August is in the summer in Rock Island and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 17°C (62°F) is normal.

Rock Island weather averages (imperial / metric)
Daytime temperature 29°C 84.2°F
Nightly temperature 16.8°C 62.2°F
Average temperature 22.9°C 73.2°F
Daily sunshine 9.7 hrs
Avg rainfall 99 mm 3.9 ins
Rainy days 9 days
Sea temperature 20.2°C 68.4°F
Humidity 73%
Windspeed 13kph 8 mph

On average August is the 3rd wettest month of the year in Rock Island with around 99mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 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 Rock Island

Rock Island average temperature in August

August rainfall

Rock Island average rain in August

August hourly sunshine

Rock Island 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 Rock Island in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rock Island weather stats

Rock Island weather statistics
Hottest month: July 29.9°C 85.8°F
Driest month: February 26mm 1ins
Sunniest month: July 10.6hrs
Coldest month: January -2.3°C 27.9°F
Wettest month: July 114mm 4.5ins
Map showing location of Rock Island (41.50948, -90.57875) Rock Island map pin © Google

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