Fairfield, WA Weather & Growing Conditions
Overnight
46°F
Haze
Haze and areas of smoke. Mostly clear. Low around 46, with temperatures rising to around 49 overnight. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Haze | 3 mph E | 0% |
| Tuesday | 82°F | Smoke then Haze | 3 mph NE | 0% |
| Tuesday Night | 49°F | Patchy Smoke then Haze | 3 mph NE | 0% |
| Wednesday | 88°F | Areas Of Smoke | 3 mph NW | 0% |
| Wednesday Night | 52°F | Patchy Smoke then Mostly Clear | 5 mph NE | 0% |
| Thursday | 92°F | Sunny | 5 mph S | 0% |
| Thursday Night | 56°F | Mostly Clear | 5 mph S | 0% |
| Friday | 91°F | Sunny | 5 to 10 mph SW | 0% |
| Friday Night | 56°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Saturday | 88°F | Sunny | 6 to 9 mph SW | 0% |
| Saturday Night | 55°F | Mostly Clear | 3 to 9 mph S | 0% |
| Sunday | 84°F | Sunny | 6 to 9 mph SW | 0% |
| Sunday Night | 52°F | Mostly Clear | 6 mph S | 0% |
| Monday | 83°F | Sunny | 7 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfield, WA
Last spring frost
May 11
First fall frost
Oct 5
Growing season
143 days
Hardiness zone
6b
Explore more for Fairfield, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Plummer 3 Wsw, Id (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.