What is the hottest month in Leavenworth?

July is the warmest month in Leavenworth, with an average high of 87.0°F.

What is the coldest month in Leavenworth?

January is the coldest month in Leavenworth, with an average low of 19.4°F.

What month does Leavenworth get the most rain?

December is typically the wettest month in Leavenworth, with about 4.52 inches of precipitation.

What plant hardiness zone is Leavenworth in?

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

Has the climate in Leavenworth changed recently?

15% of Leavenworth'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.

Leavenworth, WA

Climate overview — based on NOAA 1991-2020 normals from LEAVENWORTH 3 S, WA US.

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Leavenworth has an annual average temperature of 47.3°F with about 25.7 inches of precipitation per year and 80.2 inches of snow. The warmest month is July (average high 87.0°F), and the coldest is January (average low 19.4°F). December is typically the wettest month (4.52 in) and August the driest (0.37 in). Snow typically falls from October through March.

Annual swing

42.6°F

warmest to coldest month

Heating need

6,597

HDD/yr

Cooling need

228

CDD/yr

Best time to visit Leavenworth

Full guide →

Climate change signal

All-time records →

55 of 366 (15%) of Leavenworth'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.

1910s		8
1920s		31
1930s		68
1940s		37
1950s		16
1960s		44
1970s		16
1980s		27
1990s		28
2000s		19
2010s		46
2020s		26

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	33.5°F	19.4°F	26.4°F	4.12 in	22.1 in	14
February	42.4°F	21.1°F	31.7°F	2.90 in	12.6 in	11
March	52.0°F	26.3°F	39.2°F	2.46 in	4.7 in	9
April	61.3°F	32.0°F	46.7°F	1.22 in	—	7
May	71.0°F	39.7°F	55.4°F	1.40 in	—	7
June	77.2°F	45.8°F	61.5°F	1.04 in	—	6
July	87.0°F	51.0°F	69.0°F	0.45 in	—	3
August	86.9°F	50.3°F	68.6°F	0.37 in	—	2
September	77.9°F	41.7°F	59.8°F	0.76 in	—	4
October	62.1°F	33.1°F	47.6°F	2.37 in	0.3 in	9
November	43.9°F	26.2°F	35.0°F	4.08 in	8.1 in	14
December	33.6°F	20.0°F	26.8°F	4.52 in	32.4 in	14