Cascade Valley, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cascade Valley, a community in Grant County, Washington.
Today
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 78 in the afternoon. Southeast wind 1 to 5 mph.
7-day forecast for Cascade Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 1 to 5 mph SE | 0% |
| Tonight | 52°F | Mostly Clear | 0 to 3 mph SE | 0% |
| Sunday | 82°F | Sunny | 3 mph SE | 0% |
| Sunday Night | 52°F | Mostly Clear | 3 mph NW | 0% |
| Monday | 82°F | Sunny | 2 to 6 mph NW | 0% |
| Monday Night | 53°F | Partly Cloudy | 2 to 6 mph W | 0% |
| Tuesday | 79°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 2 to 6 mph W | 0% |
| Wednesday | 74°F | Mostly Sunny | 2 to 6 mph SW | 1% |
| Wednesday Night | 50°F | Mostly Cloudy | 2 to 6 mph W | 1% |
| Thursday | 72°F | Mostly Sunny | 5 mph NW | 2% |
| Thursday Night | 50°F | Mostly Cloudy | 5 mph NW | 7% |
| Friday | 69°F | Mostly Sunny | 5 to 8 mph W | 6% |
| Friday Night | 48°F | Partly Cloudy | 7 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Cascade Valley (47.141, -119.328). Updated through the day.
Growing snapshot for Cascade Valley
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
7a
More local growing data for Cascade Valley: nearby ZIP 98837 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Beverly
Crescent Bar
Electric City
Ephrata
George
Grand Coulee
Hartline
Krupp
Lakeview
Marine View
Moses Lake
Moses Lake North
Quincy
Royal City
Schwana
Soap Lake
Sunland Estates
Vantage
Warden
Wheeler
Wilson Creek
Climate data from the nearest NOAA station, Moses Lake Grant Co Ap, Wa (4.2 mi from Cascade Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.