Leavenworth weather by month
What a typical year looks like in Leavenworth, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Leavenworth 3 S, 4 km from Leavenworth; records cover 1914–2026.
The year at a glance
- Precipitation a year
- 25.7 in653 mm
- Snow a year
- 80 in204 cm
- Last spring freeze
- May 2
- First fall freeze
- Oct 4
- Heating degree days
- 6,805
- Cooling degree days
- 382
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 2°−17° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Leavenworth in January
Highs average 34°1° and lows 19°−7°, with 4.1 in105 mm of precipitation and 22 in56 cm of snow in a typical January.
- Record high
- 64°18° (1971)
- Record low
- −27°−33° (1930)
- Heating degree days
- 1195
- Cooling degree days
- 0
Leavenworth in February
Highs average 42°6° and lows 21°−6°, with 2.9 in74 mm of precipitation and 13 in32 cm of snow in a typical February.
- Record high
- 66°19° (2022)
- Record low
- −25°−32° (1950)
- Heating degree days
- 931
- Cooling degree days
- 0
Leavenworth in March
Highs average 52°11° and lows 26°−3°, with 2.5 in62 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 79°26° (1930)
- Record low
- −6°−21° (1955)
- Heating degree days
- 801
- Cooling degree days
- 0
Leavenworth in April
Highs average 61°16° and lows 32°0°, with 1.2 in31 mm of precipitation in a typical April.
- Record high
- 92°33° (1926)
- Record low
- 19°−7° (1935)
- Heating degree days
- 550
- Cooling degree days
- 0
Leavenworth in May
Highs average 71°22° and lows 40°4°, with 1.4 in36 mm of precipitation in a typical May.
- Record high
- 101°38° (1983)
- Record low
- 24°−4° (1922)
- Heating degree days
- 309
- Cooling degree days
- 10
Leavenworth in June
Highs average 77°25° and lows 46°8°, with 1 in26 mm of precipitation in a typical June.
- Record high
- 109°43° (2021)
- Record low
- 24°−4° (1929)
- Heating degree days
- 146
- Cooling degree days
- 41
Leavenworth in July
Highs average 87°31° and lows 51°11°, with 0.45 in11 mm of precipitation in a typical July.
- Record high
- 110°43° (1941)
- Record low
- 34°1° (1963)
- Heating degree days
- 35
- Cooling degree days
- 159
Leavenworth in August
Highs average 87°31° and lows 50°10°, with 0.37 in9.4 mm of precipitation in a typical August.
- Record high
- 108°42° (1942)
- Record low
- 30°−1° (1980)
- Heating degree days
- 33
- Cooling degree days
- 145
Leavenworth in September
Highs average 78°26° and lows 42°5°, with 0.76 in19 mm of precipitation in a typical September.
- Record high
- 104°40° (1944)
- Record low
- 19°−7° (1926)
- Heating degree days
- 183
- Cooling degree days
- 27
Leavenworth in OctoberThis month
Highs average 62°17° and lows 33°1°, with 2.4 in60 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 91°33° (1958)
- Record low
- 11°−12° (2002)
- Heating degree days
- 540
- Cooling degree days
- 0
Leavenworth in November
Highs average 44°7° and lows 26°−3°, with 4.1 in104 mm of precipitation and 8 in21 cm of snow in a typical November.
- Record high
- 74°23° (1937)
- Record low
- −7°−22° (1985)
- Heating degree days
- 898
- Cooling degree days
- 0
Leavenworth in December
Highs average 34°1° and lows 20°−7°, with 4.5 in115 mm of precipitation and 32 in82 cm of snow in a typical December.
- Record high
- 69°21° (2025)
- Record low
- −36°−38° (1968)
- Heating degree days
- 1184
- Cooling degree days
- 0