Harrington, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrington, a city in Lincoln County, Washington.
Today
87°F
Haze
Haze and areas of smoke. Sunny. High near 87, with temperatures falling to around 85 in the afternoon. North wind 3 to 8 mph.
7-day forecast for Harrington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Haze | 3 to 8 mph N | 0% |
| Tonight | 54°F | Haze | 3 mph NE | 0% |
| Wednesday | 93°F | Areas Of Smoke | 3 mph S | 0% |
| Wednesday Night | 57°F | Patchy Smoke then Mostly Clear | 3 mph S | 0% |
| Thursday | 98°F | Sunny | 3 to 10 mph S | 0% |
| Thursday Night | 61°F | Mostly Clear | 2 to 8 mph S | 0% |
| Friday | 97°F | Sunny | 5 to 13 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 5 to 13 mph W | 0% |
| Saturday | 92°F | Sunny | 5 to 13 mph SW | 0% |
| Saturday Night | 57°F | Mostly Clear | 5 to 13 mph SW | 0% |
| Sunday | 88°F | Sunny | 6 to 10 mph SW | 0% |
| Sunday Night | 55°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Monday | 87°F | Sunny | 5 to 9 mph S | 0% |
| Monday Night | 54°F | Mostly Clear | 5 to 8 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Harrington (47.480, -118.255). Updated through the day.
Growing snapshot for Harrington
Last spring frost
May 31
First fall frost
Sep 12
Growing season
101 days
Hardiness zone
6b
More local growing data for Harrington: nearby ZIP 99134 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Harrington, Wa (3 mi from Harrington). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.