Jerseyville Weather in May
What's the weather like in Jerseyville (Illinois) in May 2025?
The climate in Jerseyville during May can be summarized as warm and damp.
May is in the spring in Jerseyville and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 12°C (53°F) is normal.
| Daytime temperature | 24.1°C 75.4°F |
|---|---|
| Nightly temperature | 11.9°C 53.4°F |
| Average temperature | 18°C 64.4°F |
| Daily sunshine | 9.3 hrs |
| Avg rainfall | 107 mm 4.2 ins |
| Rainy days | 11 days |
| Sea temperature | 12.8°C 55°F |
| Humidity | 67% |
| Windspeed | 16.9kph 11 mph |
On average May is the wettest month of the year in Jerseyville with around 107mm 4.2 inches of rain making it a 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 9.3 hours of sunshine per day.
May temperatures in Jerseyville
May rainfall
May hourly sunshine
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 Jerseyville in May 2025.
Other monthly averages
Jerseyville weather stats
| Hottest month: | July | 31°C 87.8°F |
|---|---|---|
| Driest month: | January | 42mm 1.7ins |
| Sunniest month: | July | 10.8hrs |
| Coldest month: | January | 2.1°C 35.8°F |
| Wettest month: | May | 107mm 4.2ins |
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