Sweetwater, ID Weather & Growing Conditions
Today
86°F
Haze
Haze and areas of smoke. Sunny, with a high near 86. North wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Haze | 1 to 5 mph N | 0% |
| Tonight | 54°F | Haze | 1 to 5 mph S | 0% |
| Wednesday | 92°F | Areas Of Smoke | 1 to 6 mph N | 0% |
| Wednesday Night | 57°F | Areas Of Smoke then Clear | 2 to 6 mph E | 0% |
| Thursday | 98°F | Sunny | 5 mph N | 0% |
| Thursday Night | 61°F | Clear | 5 mph S | 0% |
| Friday | 97°F | Sunny | 2 to 14 mph NW | 0% |
| Friday Night | 61°F | Clear | 1 to 14 mph SW | 0% |
| Saturday | 93°F | Sunny | 1 to 12 mph N | 0% |
| Saturday Night | 60°F | Mostly Clear | 0 to 12 mph SW | 0% |
| Sunday | 89°F | Sunny | 0 to 10 mph NW | 0% |
| Sunday Night | 57°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Monday | 87°F | Sunny | 0 to 9 mph N | 0% |
| Monday Night | 57°F | Mostly Clear | 0 to 9 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sweetwater, ID
Last spring frost
May 23
First fall frost
Sep 25
Growing season
121 days
Hardiness zone
7b
Explore more for Sweetwater, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Winchester, Id (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.