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Leavenworth, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Leavenworth, a city in Chelan County, Washington.

This Afternoon
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Southeast wind around 2 mph.

7-day forecast for Leavenworth

WhenTempForecastWindPrecip
This Afternoon 85°F Mostly Sunny 2 mph SE 0%
Tonight 54°F Mostly Clear 1 mph NW 0%
Sunday 86°F Sunny 0 to 3 mph E 0%
Sunday Night 55°F Mostly Clear 1 mph N 0%
Monday 87°F Mostly Sunny 2 mph NW 0%
Monday Night 51°F Partly Cloudy 3 mph NW 0%
Tuesday 80°F Mostly Sunny 3 to 7 mph NW 0%
Tuesday Night 47°F Partly Cloudy 8 mph NW 0%
Wednesday 76°F Mostly Sunny 6 mph NW 0%
Wednesday Night 45°F Partly Cloudy 2 to 6 mph W 4%
Thursday 73°F Partly Sunny 2 mph N 8%
Thursday Night 46°F Mostly Cloudy 1 mph W 12%
Friday 70°F Partly Sunny 3 mph NW 9%
Friday Night 43°F Partly Cloudy 1 to 5 mph NW 9%

Forecast source: National Weather Service (api.weather.gov) for Leavenworth (47.595, -120.664). Updated through the day.

Growing snapshot for Leavenworth

Last spring frost
May 10
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
7a

More local growing data for Leavenworth: nearby ZIP 98821 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Leavenworth 3 S, Wa (5.2 mi from Leavenworth). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.