Prosser, in Washington, United States, is home to roughly 5,900 people in the Pacific Time Zone at 46.2°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Prosser recorded a mean annual temperature of 57°F, ranging from 15°F lows in February to 104°F highs in September, with about 12 inches of precipitation across the year.
View historical weather for Prosser · More cities in Washington