Fairfield, ID Weather & Growing Conditions
Today
78°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 78. West northwest wind 5 to 13 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Areas Of Smoke | 5 to 13 mph WNW | 0% |
| Tonight | 51°F | Areas Of Smoke | 6 to 14 mph WNW | 0% |
| Wednesday | 84°F | Areas Of Smoke | 5 to 10 mph W | 0% |
| Wednesday Night | 53°F | Patchy Smoke | 5 to 14 mph NNW | 0% |
| Thursday | 91°F | Patchy Smoke | 3 to 10 mph W | 0% |
| Thursday Night | 57°F | Patchy Smoke | 5 to 10 mph NNW | 0% |
| Friday | 92°F | Sunny | 5 to 16 mph WNW | 0% |
| Friday Night | 62°F | Mostly Clear | 6 to 17 mph NW | 0% |
| Saturday | 91°F | Sunny | 3 to 14 mph WNW | 1% |
| Saturday Night | 62°F | Mostly Clear | 6 to 16 mph NNW | 0% |
| Sunday | 88°F | Sunny | 5 to 15 mph W | 0% |
| Sunday Night | 60°F | Mostly Clear | 6 to 16 mph NNW | 0% |
| Monday | 86°F | Sunny | 3 to 14 mph W | 0% |
| Monday Night | 59°F | Mostly Clear | 7 to 15 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfield, ID
Last spring frost
Jun 16
First fall frost
Sep 6
Growing season
80 days
Hardiness zone
5a
Explore more for Fairfield, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Hill City 1 W, Id (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.