Harman US

Cowiche, WA Weather & Growing Conditions

This Afternoon
52°F
Slight Chance Rain Showers
A slight chance of rain showers before 4pm. Mostly cloudy. High near 52, with temperatures falling to around 47 in the afternoon. East wind 1 to 5 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 52°F Slight Chance Rain Showers 1 to 5 mph E 15%
Tonight 35°F Partly Cloudy 1 to 6 mph NW 3%
Wednesday 52°F Sunny 1 to 6 mph SE 6%
Wednesday Night 38°F Chance Rain Showers 2 mph NW 49%
Thursday 54°F Patchy Fog then Sunny 1 to 5 mph W 0%
Thursday Night 37°F Mostly Cloudy 0 to 6 mph NW 11%
Friday 54°F Mostly Cloudy 2 mph S 11%
Friday Night 39°F Mostly Cloudy 0 to 5 mph W 3%
Saturday 55°F Partly Sunny 0 to 5 mph E 3%
Saturday Night 41°F Chance Rain Showers 0 to 3 mph W 26%
Sunday 56°F Chance Rain Showers then Partly Sunny 1 to 7 mph W 26%
Sunday Night 36°F Mostly Cloudy 1 to 5 mph NW 8%
Monday 52°F Partly Sunny then Slight Chance Rain Showers 1 mph NE 20%
Monday Night 38°F Chance Rain Showers 1 mph NW 39%

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

Growing snapshot for Cowiche, WA

Last spring frost
Apr 8
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
7a

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

Climate data from the nearest NOAA station, Yakima #2, Wa (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.