Monticello Weather in August

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

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

August is in the summer in Monticello 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.

Monticello weather averages (imperial / metric)
Daytime temperature 28.9°C 84°F
Nightly temperature 16.7°C 62.1°F
Average temperature 22.8°C 73°F
Daily sunshine 10 hrs
Avg rainfall 91 mm 3.6 ins
Rainy days 9 days
Sea temperature 21.7°C 71°F
Humidity 74%
Windspeed 12.6kph 8 mph

On average August is the 5th wettest month of the year in Monticello with around 91mm 3.6 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 10 hours of sunshine per day.

August temperatures in Monticello

Monticello average temperature in August

August rainfall

Monticello average rain in August

August hourly sunshine

Monticello 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 Monticello in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Monticello weather stats

Monticello weather statistics
Hottest month: July 29.9°C 85.8°F
Driest month: February 46mm 1.8ins
Sunniest month: July 10.9hrs
Coldest month: January -0.2°C 31.6°F
Wettest month: July 110mm 4.3ins
Map showing location of Monticello (40.02781, -88.5734) Monticello map pin © Google

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