Hermiston Weather in April

The climate in Hermiston during April can be summarized as mild and dry.

April is in the spring in Hermiston and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 18°C (65°F), whilst at night 4°C (39°F) is normal.

On average April is the 5th driest month of the year in Hermiston with around 16mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 hours of sunshine per day.

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 Hermiston in April 2024.