Soap Lake, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Soap Lake, a city in Grant County, Washington.
Today
54°F
Sunny
Sunny. High near 54, with temperatures falling to around 48 in the afternoon. Southeast wind 2 to 6 mph.
7-day forecast for Soap Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Sunny | 2 to 6 mph SE | 5% |
| Tonight | 37°F | Chance Rain Showers | 3 mph E | 31% |
| Thursday | 58°F | Patchy Fog then Mostly Sunny | 1 to 5 mph SW | 4% |
| Thursday Night | 36°F | Partly Cloudy | 5 mph N | 5% |
| Friday | 54°F | Mostly Cloudy | 2 to 6 mph SE | 5% |
| Friday Night | 34°F | Mostly Cloudy | 2 to 6 mph S | 5% |
| Saturday | 59°F | Partly Sunny | 3 to 8 mph N | 5% |
| Saturday Night | 36°F | Mostly Cloudy | 6 mph W | 3% |
| Sunday | 60°F | Partly Sunny | 5 to 14 mph SW | 3% |
| Sunday Night | 34°F | Mostly Cloudy | 5 to 8 mph NW | 3% |
| Monday | 56°F | Partly Sunny then Slight Chance Rain Showers | 3 to 8 mph N | 15% |
| Monday Night | 34°F | Slight Chance Rain Showers | 5 mph N | 21% |
| Tuesday | 58°F | Slight Chance Rain Showers | 3 to 7 mph E | 19% |
| Tuesday Night | 36°F | Slight Chance Rain Showers | 3 to 9 mph N | 20% |
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 Nov 4, 2026.