Mount Vernon Weather in June

What's the weather like in Mount Vernon (Illinois) in June 2025?

The climate in Mount Vernon during June can be summarized as hot and a little damp.

June is in the summer in Mount Vernon and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (85°F), whilst at night 17°C (62°F) is normal.

Mount Vernon weather averages (imperial / metric)
Daytime temperature 29.6°C 85.2°F
Nightly temperature 16.7°C 62°F
Average temperature 23.1°C 73.6°F
Daily sunshine 11 hrs
Avg rainfall 88 mm 3.5 ins
Rainy days 9 days
Sea temperature 16.7°C 62.1°F
Humidity 67%
Windspeed 14kph 9 mph

On average June is the 6th driest month of the year in Mount Vernon with around 88mm 3.5 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 11 hours of sunshine per day.

June temperatures in Mount Vernon

Mount Vernon average temperature in June

June rainfall

Mount Vernon average rain in June

June hourly sunshine

Mount Vernon average rain in June

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 Mount Vernon in June 2025.

Other monthly averages

Best places to visit in June

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Mount Vernon weather stats

Mount Vernon weather statistics
Hottest month: July 31.2°C 88.2°F
Driest month: January 59mm 2.3ins
Sunniest month: July 11hrs
Coldest month: January 3.1°C 37.6°F
Wettest month: May 113mm 4.4ins
Map showing location of Mount Vernon (38.31727, -88.90312) Mount Vernon map pin © Google

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