Rexburg, ID Weather & Growing Conditions
Tonight
46°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy. Low around 46, with temperatures rising to around 48 overnight. South wind around 6 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Showers And Thunderstorms | 6 mph S | 50% |
| Saturday | 63°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 59% |
| Saturday Night | 44°F | Mostly Cloudy | 3 mph SSE | 13% |
| Sunday | 68°F | Mostly Sunny | 3 mph S | 1% |
| Sunday Night | 43°F | Mostly Clear | 3 mph ESE | 0% |
| Monday | 75°F | Sunny | 5 mph ENE | 0% |
| Monday Night | 45°F | Mostly Clear | 5 mph ENE | 0% |
| Tuesday | 75°F | Mostly Sunny | 6 mph NNW | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph SE | 5% |
| Wednesday | 76°F | Sunny | 6 mph SSE | 3% |
| Wednesday Night | 46°F | Mostly Clear | 5 mph E | 3% |
| Thursday | 78°F | Sunny | 5 mph ESE | 1% |
| Thursday Night | 48°F | Partly Cloudy | 5 mph ENE | 1% |
| Friday | 78°F | Mostly Sunny | 6 mph SSE | 3% |
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 (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.