Soap Lake, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Soap Lake, a city in Grant County, Washington.
Overnight
56°F
Smoke
Smoke and haze. Mostly clear. Low around 56, with temperatures rising to around 59 overnight. North wind around 9 mph.
7-day forecast for Soap Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Smoke | 9 mph N | 0% |
| Tuesday | 89°F | Smoke then Haze | 3 to 9 mph N | 0% |
| Tuesday Night | 59°F | Haze | 5 mph NW | 0% |
| Wednesday | 94°F | Smoke | 5 to 8 mph E | 0% |
| Wednesday Night | 61°F | Patchy Smoke then Mostly Clear | 2 to 7 mph SW | 0% |
| Thursday | 98°F | Sunny | 3 to 9 mph SW | 0% |
| Thursday Night | 65°F | Mostly Clear | 3 to 9 mph W | 0% |
| Friday | 98°F | Sunny | 3 to 18 mph W | 0% |
| Friday Night | 63°F | Mostly Clear | 6 to 18 mph W | 0% |
| Saturday | 94°F | Sunny | 5 to 16 mph W | 0% |
| Saturday Night | 61°F | Mostly Clear | 7 to 17 mph W | 0% |
| Sunday | 90°F | Sunny | 5 to 10 mph W | 0% |
| Sunday Night | 58°F | Mostly Clear | 6 to 12 mph W | 0% |
| Monday | 89°F | Sunny | 5 to 8 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Soap Lake (47.391, -119.485). Updated through the day.
Growing snapshot for Soap Lake
Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
7a
More local growing data for Soap Lake: nearby ZIP 98851 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Ephrata Muni Ap, Wa (8.3 mi from Soap Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.