Rexburg, ID Weather & Growing Conditions
Overnight
46°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3am, then a chance of rain. Mostly cloudy. Low around 46, with temperatures rising to around 48 overnight. South wind around 5 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Chance Showers And Thunderstorms | 5 mph S | 51% |
| Saturday | 63°F | Chance Light Rain then Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 39% |
| Saturday Night | 40°F | Partly Cloudy | 1 to 5 mph S | 7% |
| Sunday | 68°F | Mostly Sunny | 3 mph SW | 4% |
| Sunday Night | 40°F | Mostly Clear | 5 mph ESE | 0% |
| Monday | 74°F | Sunny | 5 mph W | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph ENE | 0% |
| Tuesday | 75°F | Mostly Sunny | 6 mph NE | 0% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph ESE | 12% |
| Wednesday | 76°F | Sunny | 6 mph ESE | 8% |
| Wednesday Night | 45°F | Mostly Clear | 2 to 6 mph ESE | 2% |
| Thursday | 78°F | Sunny | 5 mph SE | 2% |
| Thursday Night | 46°F | Partly Cloudy | 2 to 6 mph ESE | 0% |
| Friday | 79°F | Mostly Sunny | 7 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 (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.