Rexburg, ID Weather & Growing Conditions
Today
51°F
Partly Sunny
Partly sunny. High near 51, with temperatures falling to around 47 in the afternoon. South southwest wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Partly Sunny | 2 to 6 mph SSW | 1% |
| Tonight | 28°F | Areas Of Fog | 2 to 7 mph SSE | 0% |
| Thursday | 48°F | Mostly Cloudy | 6 mph SSW | 6% |
| Thursday Night | 30°F | Areas Of Fog | 5 mph S | 6% |
| Friday | 46°F | Mostly Sunny | 2 to 6 mph SSW | 0% |
| Friday Night | 27°F | Partly Cloudy | 2 mph ESE | 0% |
| Saturday | 50°F | Sunny | 3 mph N | 0% |
| Saturday Night | 29°F | Mostly Clear | 3 mph NE | 0% |
| Sunday | 56°F | Mostly Sunny | 5 mph SW | 0% |
| Sunday Night | 32°F | Partly Cloudy | 5 mph SE | 0% |
| Monday | 55°F | Mostly Sunny | 2 mph NNE | 0% |
| Monday Night | 34°F | Mostly Cloudy | 2 mph E | 0% |
| Tuesday | 55°F | Mostly Sunny | 3 mph S | 3% |
| Tuesday Night | 34°F | Partly Cloudy | 3 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rexburg, ID
Last spring frost
May 12
First fall frost
Sep 24
Growing season
132 days
Hardiness zone
5a
Explore more for Rexburg, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Rexburg Byu Idaho, Id (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.