Warm River, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Warm River, a city in Fremont County, Idaho.
Today
77°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 77. South southeast wind 3 to 7 mph.
7-day forecast for Warm River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Smoke | 3 to 7 mph SSE | 0% |
| Tonight | 45°F | Patchy Smoke | 2 to 6 mph W | 1% |
| Wednesday | 80°F | Patchy Smoke | 2 to 7 mph SSW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 5 mph ESE | 0% |
| Thursday | 87°F | Sunny | 3 to 8 mph SSE | 0% |
| Thursday Night | 53°F | Mostly Clear | 6 mph ESE | 0% |
| Friday | 91°F | Sunny | 3 to 8 mph SSE | 0% |
| Friday Night | 54°F | Mostly Clear | 5 to 9 mph ESE | 0% |
| Saturday | 91°F | Sunny | 3 to 9 mph SE | 0% |
| Saturday Night | 57°F | Mostly Clear | 3 to 8 mph ESE | 0% |
| Sunday | 89°F | Mostly Sunny | 3 to 10 mph SSE | 1% |
| Sunday Night | 56°F | Mostly Clear | 3 to 13 mph SSE | 2% |
| Monday | 87°F | Sunny | 3 to 9 mph SSE | 1% |
| Monday Night | 56°F | Partly Cloudy | 3 to 10 mph SE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Warm River (44.121, -111.321). Updated through the day.
Growing snapshot for Warm River
Last spring frost
May 21
First fall frost
Sep 21
Growing season
121 days
Hardiness zone
5a
More local growing data for Warm River: nearby ZIP 83420 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ashton 1N, Id (6.6 mi from Warm River). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.