Rexburg, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rexburg, a city in Madison County, Idaho.
Tonight
40°F
Scattered Rain Showers
Scattered rain showers before 2am. Mostly cloudy. Low around 40, with temperatures rising to around 43 overnight. South southeast wind 0 to 3 mph. Chance of precipitation is 30%.
7-day forecast for Rexburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 40°F | Scattered Rain Showers | 0 to 3 mph SSE | 32% |
| Sunday | 68°F | Mostly Sunny | 0 to 3 mph WSW | 3% |
| Sunday Night | 39°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Monday | 75°F | Sunny | 0 to 5 mph E | 0% |
| Monday Night | 42°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Tuesday | 76°F | Mostly Sunny | 0 to 6 mph S | 1% |
| Tuesday Night | 46°F | Slight Chance Light Rain | 5 mph ESE | 23% |
| Wednesday | 75°F | Mostly Sunny | 3 to 7 mph S | 8% |
| Wednesday Night | 45°F | Mostly Clear | 6 mph SE | 4% |
| Thursday | 79°F | Sunny | 6 mph S | 1% |
| Thursday Night | 47°F | Mostly Clear | 3 to 7 mph ESE | 1% |
| Friday | 79°F | Sunny | 5 to 8 mph SE | 5% |
| Friday Night | 47°F | Partly Cloudy | 8 mph SSE | 9% |
| Saturday | 75°F | Mostly Sunny | 5 to 9 mph S | 12% |
Forecast source: National Weather Service (api.weather.gov) for Rexburg (43.823, -111.791). Updated through the day.
Growing snapshot for Rexburg
Last spring frost
May 12
First fall frost
Sep 24
Growing season
132 days
Hardiness zone
5a
More local growing data for Rexburg: nearby ZIP 83460 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rexburg Byu Idaho, Id (0.6 mi from Rexburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.