Eureka Weather in April

What's the weather like in Eureka (Illinois) in April 2025?

The climate in Eureka during April can be summarized as mild and a little damp.

April is in the spring in Eureka and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 4°C (40°F) is normal.

Eureka weather averages (imperial / metric)
Daytime temperature 16.8°C 62.2°F
Nightly temperature 4.3°C 39.7°F
Average temperature 10.5°C 50.9°F
Daily sunshine 7.9 hrs
Avg rainfall 98 mm 3.9 ins
Rainy days 12 days
Sea temperature 9°C 48.1°F
Humidity 65%
Windspeed 20.5kph 13 mph

On average April is the 3rd wettest month of the year in Eureka with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.9 hours of sunshine per day.

April temperatures in Eureka

Eureka average temperature in April

April rainfall

Eureka average rain in April

April hourly sunshine

Eureka average rain in April

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 Eureka in April 2024.

Other monthly averages

Best places to visit in April

UV index Best time to go?

Eureka weather stats

Eureka weather statistics
Hottest month: July 29.8°C 85.6°F
Driest month: February 41mm 1.6ins
Sunniest month: July 10.8hrs
Coldest month: January -1.4°C 29.5°F
Wettest month: July 106mm 4.2ins
Map showing location of Eureka (40.72143, -89.27286) Eureka map pin © Google

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