Fairfield, WA Weather & Growing Conditions
Overnight
35°F
Partly Cloudy
Partly cloudy, with a low around 35. Southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Partly Cloudy | 1 mph SE | 2% |
| Wednesday | 50°F | Sunny | 2 mph S | 2% |
| Wednesday Night | 36°F | Rain Showers | 0 to 5 mph S | 85% |
| Thursday | 48°F | Rain Showers | 3 to 8 mph SW | 85% |
| Thursday Night | 35°F | Partly Cloudy | 6 mph S | 0% |
| Friday | 51°F | Mostly Cloudy | 7 mph SE | 4% |
| Friday Night | 39°F | Mostly Cloudy | 5 mph SE | 8% |
| Saturday | 60°F | Partly Sunny | 5 mph E | 3% |
| Saturday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 7 mph SE | 18% |
| Sunday | 52°F | Slight Chance Rain Showers | 5 to 9 mph SW | 18% |
| Sunday Night | 38°F | Mostly Cloudy | 5 mph S | 5% |
| Monday | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 1 to 5 mph E | 15% |
| Monday Night | 38°F | Chance Rain Showers | 3 mph E | 25% |
| Tuesday | 55°F | Chance Rain Showers | 5 mph S | 25% |
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 Nov 4, 2026.