Richland, Washington Weather:
Saturday, December 19, 2026
Rainy Weather
Day 45°
Night 27°
Precipitation 25 %
Wind 14 mph
Weather Forecast History
Last Year's Weather on This Day (December 19, 2025)
Partly Sunny with Showers

Day

52°

Night

41°

Wind

12 mph

UV Index

2

Precipitation

55 %