Harrington, WA Weather & Growing Conditions
Today
87°F
Haze
Haze and areas of smoke. Sunny, with a high near 87. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Haze | 5 mph N | 0% |
| Tonight | 54°F | Haze | 5 mph NE | 0% |
| Wednesday | 92°F | Areas Of Smoke | 2 to 6 mph SE | 0% |
| Wednesday Night | 57°F | Areas Of Smoke | 5 mph S | 0% |
| Thursday | 96°F | Sunny | 5 to 9 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 3 to 8 mph S | 0% |
| Friday | 96°F | Sunny | 5 to 10 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Saturday | 94°F | Sunny | 5 to 13 mph SW | 0% |
| Saturday Night | 58°F | Mostly Clear | 7 to 13 mph SW | 0% |
| Sunday | 89°F | Sunny | 7 to 10 mph SW | 0% |
| Sunday Night | 56°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Monday | 89°F | Sunny | 5 to 8 mph S | 0% |
| Monday Night | 56°F | Mostly Clear | 3 to 7 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrington, WA
Last spring frost
May 31
First fall frost
Sep 12
Growing season
101 days
Hardiness zone
6b
Explore more for Harrington, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Harrington, Wa (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.