Rexburg, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rexburg, a city in Madison County, Idaho.
Today
63°F
Chance Light Rain then Slight Chance Showers And Thunderstorms
A chance of rain before noon, then a slight chance of showers and thunderstorms between 1pm and 3pm. Partly sunny, with a high near 63. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.
7-day forecast for Rexburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Chance Light Rain then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 28% |
| Tonight | 40°F | Partly Cloudy | 0 to 5 mph SSE | 7% |
| Sunday | 68°F | Mostly Sunny | 0 to 3 mph SW | 4% |
| Sunday Night | 40°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Monday | 74°F | Sunny | 0 to 5 mph E | 0% |
| Monday Night | 42°F | Mostly Clear | 0 to 5 mph ENE | 0% |
| Tuesday | 76°F | Mostly Sunny | 0 to 6 mph N | 0% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph E | 12% |
| Wednesday | 76°F | Sunny | 6 mph E | 8% |
| Wednesday Night | 44°F | Mostly Clear | 5 mph ESE | 2% |
| Thursday | 78°F | Sunny | 5 mph SE | 2% |
| Thursday Night | 46°F | Partly Cloudy | 5 mph ESE | 0% |
| Friday | 79°F | Mostly Sunny | 7 mph SE | 3% |
| Friday Night | 47°F | Partly Cloudy | 7 mph SSE | 9% |
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 19, 2026.