Richland, Washington Weather:
Wednesday, September 30, 2026
Sunny Weather
Day 73°
Night 48°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (September 30, 2025)
Cloudy Weather

Day

77°

Night

54°

Wind

6 mph

UV Index

30

Precipitation

3 %