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
59°F
Light Rain Likely then Chance Showers And Thunderstorms
Rain likely before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 59. South southwest wind around 5 mph. Chance of precipitation is 70%.
7-day forecast for Warm River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Light Rain Likely then Chance Showers And Thunderstorms | 5 mph SSW | 68% |
| Tonight | 38°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 3 mph NNW | 22% |
| Sunday | 62°F | Mostly Sunny | 3 mph S | 9% |
| Sunday Night | 37°F | Mostly Clear | 3 mph E | 0% |
| Monday | 69°F | Sunny | 5 mph SE | 0% |
| Monday Night | 39°F | Mostly Clear | 1 to 5 mph ENE | 0% |
| Tuesday | 72°F | Mostly Sunny | 2 to 6 mph S | 0% |
| Tuesday Night | 42°F | Partly Cloudy | 2 mph ENE | 12% |
| Wednesday | 71°F | Sunny | 2 to 7 mph SW | 9% |
| Wednesday Night | 42°F | Mostly Clear | 3 mph E | 4% |
| Thursday | 74°F | Sunny | 5 mph SE | 2% |
| Thursday Night | 43°F | Mostly Clear | 5 mph E | 1% |
| Friday | 74°F | Mostly Sunny | 6 mph SSE | 3% |
| Friday Night | 44°F | Partly Cloudy | 3 mph ESE | 9% |
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 Sep 19, 2026.