Warm River, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Warm River, a city in Fremont County, Idaho.
Tonight
44°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. Low around 44, with temperatures rising to around 46 overnight. South southeast wind around 1 mph. Chance of precipitation is 70%.
7-day forecast for Warm River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Showers And Thunderstorms Likely | 1 mph SSE | 65% |
| Saturday | 59°F | Showers And Thunderstorms Likely | 1 to 5 mph WSW | 68% |
| Saturday Night | 40°F | Slight Chance Showers And Thunderstorms | 2 mph SW | 24% |
| Sunday | 63°F | Partly Sunny | 0 to 3 mph SSW | 7% |
| Sunday Night | 39°F | Mostly Clear | 3 mph E | 1% |
| Monday | 69°F | Sunny | 5 mph SE | 0% |
| Monday Night | 41°F | Mostly Clear | 0 to 3 mph N | 0% |
| Tuesday | 72°F | Mostly Sunny | 2 to 6 mph SSW | 0% |
| Tuesday Night | 43°F | Partly Cloudy | 3 mph ENE | 5% |
| Wednesday | 71°F | Sunny | 3 to 7 mph SSW | 5% |
| Wednesday Night | 43°F | Mostly Clear | 3 mph E | 3% |
| Thursday | 73°F | Sunny | 5 mph SE | 4% |
| Thursday Night | 44°F | Partly Cloudy | 5 mph NE | 2% |
| Friday | 74°F | Mostly Sunny | 6 mph SSE | 4% |
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.