Harman US

Steptoe, WA Weather & Growing Conditions

Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 1 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 48°F Partly Cloudy 1 mph SW 0%
Saturday 76°F Sunny 3 mph SW 1%
Saturday Night 48°F Mostly Clear 0 to 3 mph NE 1%
Sunday 80°F Sunny 1 to 5 mph SE 0%
Sunday Night 49°F Clear 3 mph E 0%
Monday 81°F Sunny 5 mph S 0%
Monday Night 50°F Mostly Clear 0 to 3 mph S 0%
Tuesday 77°F Sunny 1 to 5 mph S 0%
Tuesday Night 49°F Partly Cloudy 3 mph S 1%
Wednesday 73°F Mostly Sunny 2 to 6 mph SW 1%
Wednesday Night 47°F Partly Cloudy 3 mph S 1%
Thursday 73°F Mostly Sunny 3 mph SW 4%
Thursday Night 47°F Partly Cloudy 3 mph NE 8%
Friday 69°F Partly Sunny then Slight Chance Rain Showers 5 mph SW 15%

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

Growing snapshot for Steptoe, WA

Last spring frost
Apr 29
First fall frost
Oct 4
Growing season
161 days
Hardiness zone
6b

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

Climate data from the nearest NOAA station, St John, Wa (12.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.