weather in rochester washington
Hourly Forecast Detailed. 1  0am:The Rochester, WA forecast for Apr 08 is 44 degrees and Clear. There is 80 percentage chance of rain and 11 mph winds from the South. 2  3am:The Rochester, WA forecast for Apr 08 is 41 degrees and Patchy rain possible. There is 89 percentage chance of rain and 9 mph winds from the South.