Petersburg Weather in April
What's the weather like in Petersburg (Illinois) in April 2025?
The climate in Petersburg during April can be summarized as mild and a little damp.
April is in the spring in Petersburg and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 5°C (42°F) is normal.
| Daytime temperature | 17.6°C 63.6°F |
|---|---|
| Nightly temperature | 5.3°C 41.5°F |
| Average temperature | 11.4°C 52.5°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 98 mm 3.9 ins |
| Rainy days | 11 days |
| Sea temperature | 9°C 48.1°F |
| Humidity | 65% |
| Windspeed | 20.9kph 13 mph |
On average April is the 4th wettest month of the year in Petersburg with around 98mm 3.9 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 8 hours of sunshine per day.
April temperatures in Petersburg
April rainfall
April 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 Petersburg in April 2025.
Other monthly averages
Petersburg weather stats
| Hottest month: | July | 30.2°C 86.4°F |
|---|---|---|
| Driest month: | January | 39mm 1.5ins |
| Sunniest month: | July | 10.9hrs |
| Coldest month: | January | -0.2°C 31.6°F |
| Wettest month: | May | 106mm 4.2ins |
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