South Cle Elum, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Cle Elum, a town in Kittitas County, Washington.
Overnight
51°F
Smoke
Smoke. Mostly clear. Low around 51, with temperatures rising to around 54 overnight. North wind around 1 mph.
7-day forecast for South Cle Elum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Smoke | 1 mph N | 0% |
| Tuesday | 88°F | Smoke | 1 to 6 mph E | 0% |
| Tuesday Night | 54°F | Areas Of Smoke | 2 mph N | 0% |
| Wednesday | 94°F | Smoke | 0 to 5 mph N | 0% |
| Wednesday Night | 57°F | Smoke then Mostly Clear | 0 to 5 mph W | 0% |
| Thursday | 97°F | Sunny | 0 to 8 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 3 to 8 mph W | 0% |
| Friday | 90°F | Sunny | 3 to 10 mph W | 0% |
| Friday Night | 57°F | Mostly Clear | 3 to 9 mph W | 0% |
| Saturday | 85°F | Sunny | 3 to 9 mph W | 0% |
| Saturday Night | 55°F | Mostly Clear | 6 to 9 mph W | 0% |
| Sunday | 80°F | Sunny | 6 to 10 mph W | 0% |
| Sunday Night | 53°F | Mostly Clear | 5 to 10 mph W | 0% |
| Monday | 80°F | Sunny | 5 to 9 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for South Cle Elum (47.186, -120.953). Updated through the day.
Growing snapshot for South Cle Elum
Last spring frost
May 13
First fall frost
Sep 25
Growing season
132 days
Hardiness zone
7a
More local growing data for South Cle Elum: nearby ZIP 98943 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cle Elum, Wa (2.5 mi from South Cle Elum). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.