Ahtanum, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ahtanum, a community in Yakima County, Washington.
Overnight
32°F
Patchy Fog
Patchy fog after 4am. Mostly clear. Low around 32, with temperatures rising to around 34 overnight. Wind around 0 mph.
7-day forecast for Ahtanum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 32°F | Patchy Fog | 0 mph | 2% |
| Wednesday | 53°F | Patchy Fog then Sunny | 0 to 5 mph SE | 4% |
| Wednesday Night | 35°F | Chance Rain Showers | 1 mph NW | 29% |
| Thursday | 57°F | Patchy Fog then Sunny | 0 to 3 mph W | 1% |
| Thursday Night | 33°F | Partly Cloudy | 0 to 3 mph NW | 9% |
| Friday | 55°F | Mostly Cloudy | 2 mph E | 9% |
| Friday Night | 36°F | Mostly Cloudy | 2 mph N | 8% |
| Saturday | 57°F | Mostly Sunny | 2 mph E | 1% |
| Saturday Night | 36°F | Mostly Cloudy | 2 mph NW | 13% |
| Sunday | 59°F | Partly Sunny | 0 to 7 mph W | 13% |
| Sunday Night | 34°F | Mostly Cloudy | 0 to 5 mph NW | 2% |
| Monday | 55°F | Partly Sunny | 2 mph NE | 14% |
| Monday Night | 34°F | Slight Chance Rain Showers | 1 mph NW | 24% |
| Tuesday | 57°F | Chance Rain Showers | 2 mph E | 29% |
Forecast source: National Weather Service (api.weather.gov) for Ahtanum (46.557, -120.614). Updated through the day.
Growing snapshot for Ahtanum
Last spring frost
Apr 8
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
7a
More local growing data for Ahtanum: nearby ZIP 98902 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Buena
Cliffdell
Cowiche
Donald
Eschbach
Gleed
Grandview
Granger
Harrah
Mabton
Moxee
Naches
Nile
Outlook
Parker
Selah
Summitview
Sunnyside
Tampico
Terrace Heights
Tieton
Toppenish
Union Gap
Wapato
White Swan
Yakima
Zillah
Climate data from the nearest NOAA station, Yakima #2, Wa (1.8 mi from Ahtanum). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.