Greenwater, WA Weather & Growing Conditions
Overnight
45°F
Partly Cloudy
Partly cloudy. Low around 45, with temperatures rising to around 47 overnight. East southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Partly Cloudy | 3 mph ESE | 0% |
| Saturday | 71°F | Mostly Sunny | 0 to 7 mph N | 0% |
| Saturday Night | 48°F | Mostly Clear | 2 to 8 mph ESE | 0% |
| Sunday | 75°F | Sunny | 2 to 7 mph NW | 0% |
| Sunday Night | 48°F | Mostly Clear | 2 to 7 mph SSE | 0% |
| Monday | 68°F | Mostly Sunny | 1 to 8 mph SSW | 0% |
| Monday Night | 44°F | Partly Cloudy | 2 to 8 mph S | 0% |
| Tuesday | 62°F | Partly Sunny | 1 to 8 mph S | 0% |
| Tuesday Night | 42°F | Mostly Cloudy | 2 to 8 mph SW | 0% |
| Wednesday | 61°F | Partly Sunny | 1 to 8 mph W | 9% |
| Wednesday Night | 43°F | Mostly Cloudy | 2 to 7 mph SSW | 9% |
| Thursday | 59°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 6 mph NNE | 18% |
| Thursday Night | 41°F | Slight Chance Light Rain | 2 to 6 mph SW | 19% |
| Friday | 57°F | Slight Chance Light Rain | 2 to 7 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greenwater, WA
Last spring frost
Apr 18
First fall frost
Oct 31
Growing season
196 days
Hardiness zone
8a
Explore more for Greenwater, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Mud Mtn Dam, Wa (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.