Richland, WA
Climate overview — based on NOAA 1991-2020 normals from RICHLAND, WA US.
Year-round temperatures (°F)
Climate summary
Richland has an annual average temperature of 53.6°F with about 7.3 inches of precipitation per year. The warmest month is July (average high 89.3°F), and the coldest is December (average low 28.4°F). December is typically the wettest month (1.07 in) and August the driest (0.13 in).
Best time to visit Richland
Full guide →Climate change signal
All-time records →41 of 366 (11.2%) of Richland's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 83 | |
| 1950s | 81 | |
| 1960s | 51 | |
| 1970s | 53 | |
| 1980s | 28 | |
| 1990s | 10 | |
| 2000s | 15 | |
| 2010s | 11 | |
| 2020s | 34 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 40.6°F | 28.8°F | 34.7°F | 1.04 in | — | 12 |
| February | 47.5°F | 30.1°F | 38.8°F | 0.67 in | — | 9 |
| March | 57.1°F | 35.1°F | 46.1°F | 0.64 in | — | 8 |
| April | 65.1°F | 41.0°F | 53.0°F | 0.62 in | — | 7 |
| May | 73.9°F | 48.3°F | 61.1°F | 0.63 in | — | 7 |
| June | 80.2°F | 54.4°F | 67.3°F | 0.56 in | — | 5 |
| July | 89.3°F | 60.0°F | 74.7°F | 0.23 in | — | 2 |
| August | 88.1°F | 59.0°F | 73.6°F | 0.13 in | — | 2 |
| September | 78.9°F | 51.4°F | 65.2°F | 0.29 in | — | 3 |
| October | 64.3°F | 41.7°F | 53.0°F | 0.54 in | — | 7 |
| November | 49.0°F | 33.6°F | 41.3°F | 0.87 in | — | 10 |
| December | 39.9°F | 28.4°F | 34.1°F | 1.07 in | — | 12 |
Climate twins of Richland
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).