Geneva Weather in May

What's the weather like in Geneva (Illinois) in May 2025?

The climate in Geneva during May can be summarized as mild and a little damp.

May is in the spring in Geneva and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 9°C (47°F) is normal.

Geneva weather averages (imperial / metric)
Daytime temperature 21.6°C 70.8°F
Nightly temperature 8.5°C 47.2°F
Average temperature 15°C 59°F
Daily sunshine 9.6 hrs
Avg rainfall 90 mm 3.5 ins
Rainy days 11 days
Sea temperature 8.1°C 46.6°F
Humidity 65%
Windspeed 18kph 11 mph

On average May is the 6th wettest month of the year in Geneva with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

May temperatures in Geneva

Geneva average temperature in May

May rainfall

Geneva average rain in May

May hourly sunshine

Geneva average rain in May

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 Geneva in May 2024.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Geneva weather stats

Geneva weather statistics
Hottest month: July 28.5°C 83.3°F
Driest month: February 35mm 1.4ins
Sunniest month: July 10.9hrs
Coldest month: January -2.3°C 27.9°F
Wettest month: June 106mm 4.2ins
Map showing location of Geneva (41.88753, -88.30535) Geneva map pin © Google

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