Weather Forecast and Radar for Prosser, Washington

Weather in Prosser, WA

Prosser, Washington, United States has a semi-arid climate, characterized by hot, dry summers and mild to cool winters.

In the summer, temperatures in Prosser range from the mid 70s to the mid 90s Fahrenheit. The hottest months are July and August, when temperatures reach an average high of 93 degrees Fahrenheit. Nights can still be warm, with average lows in the mid 60s.

In the winter, temperatures are much cooler, ranging from the mid 30s to the mid 50s Fahrenheit. The coldest months are December and January, when temperatures reach an average low of 35 degrees Fahrenheit.

Spring and autumn are mild with temperatures ranging from the mid 50s to the mid 70s Fahrenheit.

Overall, Prosser has an average of 300 sunny days per year, making it an ideal destination for outdoor activities.

Fast Facts About Prosser, WA

As of 2020, the city population is 6288.

Major Cities Nearby Prosser, WA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Prosser, Washington.