Richland, Washington Weather:
Tuesday, December 15, 2026
Cloudy Weather
Day 43°
Night 34°
Precipitation 40 %
Wind 12 mph
Weather Forecast History
Last Year's Weather on This Day (December 15, 2025)
Rainy Weather

Day

68°

Night

48°

Wind

11 mph

UV Index

1

Precipitation

96 %