What is the hottest month in Ritzville?

July is the warmest month in Ritzville, with an average high of 86.7°F.

What is the coldest month in Ritzville?

December is the coldest month in Ritzville, with an average low of 23.4°F.

What month does Ritzville get the most rain?

December is typically the wettest month in Ritzville, with about 1.80 inches of precipitation.

What plant hardiness zone is Ritzville in?

Ritzville is approximately in USDA plant hardiness Zone 7b, based on the average annual extreme minimum temperature.

Has the climate in Ritzville changed recently?

8.7% of Ritzville's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Ritzville, WA

Climate overview — based on NOAA 1991-2020 normals from RITZVILLE 1 SSE, WA US.

BSk Semi-arid (cold) climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Ritzville has an annual average temperature of 48.7°F with about 12.8 inches of precipitation per year and 15.7 inches of snow. The warmest month is July (average high 86.7°F), and the coldest is December (average low 23.4°F). December is typically the wettest month (1.80 in) and August the driest (0.32 in). Snow typically falls from November through March.

Annual swing

40.8°F

warmest to coldest month

Heating need

6,177

HDD/yr

Cooling need

294

CDD/yr

Best time to visit Ritzville

Full guide →

Climate change signal

All-time records →

32 of 366 (8.7%) of Ritzville'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.

1890s		0
1900s		0
1910s		18
1920s		47
1930s		69
1940s		41
1950s		27
1960s		37
1970s		18
1980s		26
1990s		22
2000s		23
2010s		20
2020s		18

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	35.8°F	23.9°F	29.8°F	1.64 in	5.9 in	12
February	41.8°F	25.9°F	33.9°F	1.12 in	1.9 in	9
March	51.0°F	29.8°F	40.4°F	1.33 in	1.2 in	9
April	59.7°F	33.8°F	46.7°F	0.96 in	0.1 in	8
May	69.1°F	41.3°F	55.2°F	1.19 in	—	7
June	76.2°F	46.8°F	61.5°F	0.89 in	—	6
July	86.7°F	53.4°F	70.1°F	0.41 in	—	3
August	86.1°F	53.3°F	69.7°F	0.32 in	—	3
September	76.6°F	46.1°F	61.4°F	0.43 in	—	4
October	61.5°F	36.4°F	49.0°F	1.08 in	—	7
November	45.2°F	28.7°F	36.9°F	1.58 in	2.4 in	11
December	35.2°F	23.4°F	29.3°F	1.80 in	4.2 in	12