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Twisp, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Twisp, a town in Okanogan County, Washington.

Overnight
49°F
Partly Cloudy
Partly cloudy. Low around 49, with temperatures rising to around 51 overnight. Northwest wind around 1 mph.

7-day forecast for Twisp

WhenTempForecastWindPrecip
Overnight 49°F Partly Cloudy 1 mph NW 0%
Saturday 81°F Mostly Sunny 0 to 7 mph E 1%
Saturday Night 49°F Mostly Clear 0 to 5 mph NW 1%
Sunday 81°F Sunny 0 to 8 mph S 0%
Sunday Night 49°F Mostly Clear 0 to 6 mph W 0%
Monday 83°F Mostly Sunny 1 to 6 mph SW 0%
Monday Night 47°F Partly Cloudy 5 mph W 0%
Tuesday 80°F Mostly Sunny 1 to 5 mph E 0%
Tuesday Night 44°F Mostly Cloudy 5 mph W 0%
Wednesday 74°F Partly Sunny 2 to 7 mph W 0%
Wednesday Night 45°F Mostly Cloudy 2 to 7 mph W 1%
Thursday 70°F Partly Sunny 1 to 5 mph E 11%
Thursday Night 45°F Slight Chance Rain Showers 1 to 5 mph W 15%
Friday 68°F Slight Chance Rain Showers 1 to 6 mph NW 15%

Forecast source: National Weather Service (api.weather.gov) for Twisp (48.361, -120.117). Updated through the day.

Growing snapshot for Twisp

Last spring frost
May 15
First fall frost
Sep 22
Growing season
127 days
Hardiness zone
6b

More local growing data for Twisp: nearby ZIP 98856 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Winthrop 1 Wsw, Wa (9.7 mi from Twisp). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.