Harrington, WA Weather & Growing Conditions
This Afternoon
53°F
Mostly Cloudy
Mostly cloudy. High near 53, with temperatures falling to around 47 in the afternoon. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Mostly Cloudy | 5 mph NE | 3% |
| Tonight | 32°F | Mostly Cloudy then Patchy Fog | 3 mph NE | 3% |
| Wednesday | 52°F | Patchy Fog then Sunny | 1 to 5 mph S | 2% |
| Wednesday Night | 35°F | Chance Rain Showers | 5 mph SE | 51% |
| Thursday | 51°F | Chance Rain Showers then Partly Sunny | 5 to 9 mph SW | 51% |
| Thursday Night | 35°F | Partly Cloudy | 7 mph S | 10% |
| Friday | 54°F | Mostly Cloudy | 7 to 12 mph S | 10% |
| Friday Night | 36°F | Mostly Cloudy | 5 to 9 mph SE | 3% |
| Saturday | 60°F | Partly Sunny | 6 to 9 mph E | 2% |
| Saturday Night | 40°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 12 mph SE | 21% |
| Sunday | 58°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 17 mph SW | 21% |
| Sunday Night | 36°F | Mostly Cloudy | 5 to 9 mph SE | 10% |
| Monday | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 9 mph E | 18% |
| Monday Night | 37°F | Chance Rain Showers | 6 mph SE | 30% |
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 (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.