What is the hottest month in Wallowa?

July is the warmest month in Wallowa, with an average high of 87.7°F.

What is the coldest month in Wallowa?

December is the coldest month in Wallowa, with an average low of 19.3°F.

What month does Wallowa get the most rain?

May is typically the wettest month in Wallowa, with about 2.16 inches of precipitation.

What plant hardiness zone is Wallowa in?

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

Has the climate in Wallowa changed recently?

15.8% of Wallowa'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.

Wallowa, OR

Climate overview — based on NOAA 1991-2020 normals from WALLOWA, OR US.

Dsb Mediterranean continental (warm summer) climate 7a USDA hardiness Zone 7a

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Wallowa has an annual average temperature of 46.8°F with about 18 inches of precipitation per year and 47.9 inches of snow. The warmest month is July (average high 87.7°F), and the coldest is December (average low 19.3°F). May is typically the wettest month (2.16 in) and July the driest (0.51 in). Snow typically falls from October through April.

Annual swing

39.7°F

warmest to coldest month

Heating need

6,648

HDD/yr

Cooling need

108

CDD/yr

Best time to visit Wallowa

Full guide →

Climate change signal

All-time records →

58 of 366 (15.8%) of Wallowa'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.

1900s		14
1910s		21
1920s		21
1930s		60
1940s		37
1950s		12
1960s		20
1970s		20
1980s		28
1990s		40
2000s		27
2010s		36
2020s		30

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	35.9°F	20.1°F	28.0°F	1.75 in	12.4 in	13
February	43.0°F	22.2°F	32.6°F	1.61 in	10.4 in	11
March	52.4°F	27.3°F	39.8°F	1.59 in	3.2 in	13
April	59.9°F	31.6°F	45.7°F	1.64 in	1.0 in	11
May	69.3°F	38.0°F	53.7°F	2.16 in	0.1 in	12
June	76.5°F	43.3°F	59.9°F	1.59 in	—	9
July	87.7°F	46.7°F	67.2°F	0.51 in	—	4
August	87.7°F	45.2°F	66.4°F	0.78 in	—	5
September	78.9°F	38.4°F	58.7°F	0.74 in	—	5
October	62.8°F	31.1°F	47.0°F	1.52 in	0.2 in	11
November	45.8°F	25.1°F	35.5°F	1.95 in	5.8 in	15
December	35.7°F	19.3°F	27.5°F	2.14 in	14.8 in	14