Harman US

Winthrop, WA Weather & Growing Conditions

Today
69°F
Mostly Sunny
Mostly sunny, with a high near 69. Southeast wind 1 to 5 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 69°F Mostly Sunny 1 to 5 mph SE 1%
Tonight 51°F Mostly Clear 5 mph NW 1%
Sunday 69°F Sunny 5 mph SW 0%
Sunday Night 50°F Mostly Clear 5 mph N 0%
Monday 69°F Mostly Sunny 0 to 5 mph W 0%
Monday Night 48°F Partly Cloudy 3 to 8 mph NW 0%
Tuesday 66°F Mostly Sunny 1 to 6 mph SW 0%
Tuesday Night 46°F Mostly Cloudy 5 to 8 mph W 0%
Wednesday 61°F Partly Sunny 1 to 6 mph W 1%
Wednesday Night 46°F Mostly Cloudy 6 mph NW 2%
Thursday 59°F Partly Sunny then Slight Chance Rain Showers 3 mph SW 16%
Thursday Night 46°F Slight Chance Rain Showers 2 to 6 mph NW 19%
Friday 56°F Slight Chance Rain Showers 5 mph NW 17%
Friday Night 43°F Slight Chance Rain Showers then Partly Cloudy 6 mph NW 17%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Winthrop, WA

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

Explore more for Winthrop, WA: full frost dates · planting calendar · Washington frost dates

Climate data from the nearest NOAA station, Winthrop 1 Wsw, Wa (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.