Sweetwater, ID Weather & Growing Conditions
This Afternoon
52°F
Cloudy
Cloudy. High near 52, with temperatures falling to around 48 in the afternoon. Southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Cloudy | 1 mph SW | 4% |
| Tonight | 37°F | Mostly Cloudy | 1 mph S | 4% |
| Wednesday | 52°F | Sunny | 2 mph N | 1% |
| Wednesday Night | 38°F | Mostly Cloudy then Rain Showers Likely | 3 mph SE | 55% |
| Thursday | 52°F | Rain Showers Likely then Mostly Cloudy | 1 to 5 mph SW | 55% |
| Thursday Night | 35°F | Partly Cloudy | 2 to 6 mph SE | 2% |
| Friday | 53°F | Partly Sunny | 3 to 7 mph SE | 7% |
| Friday Night | 39°F | Mostly Cloudy | 3 to 9 mph SE | 7% |
| Saturday | 61°F | Partly Sunny | 7 mph SE | 2% |
| Saturday Night | 41°F | Mostly Cloudy | 5 to 17 mph SE | 7% |
| Sunday | 59°F | Mostly Cloudy | 2 to 10 mph SW | 14% |
| Sunday Night | 39°F | Mostly Cloudy | 5 mph S | 12% |
| Monday | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph E | 17% |
| Monday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 1 to 5 mph S | 17% |
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 Nov 4, 2026.