Rupert, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rupert, a city in Minidoka County, Idaho.
Today
65°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 noon and 2pm. Mostly sunny, with a high near 65. West southwest wind 5 to 8 mph. Chance of precipitation is 40%.
7-day forecast for Rupert
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Chance Light Rain then Slight Chance Showers And Thunderstorms | 5 to 8 mph WSW | 42% |
| Tonight | 40°F | Mostly Clear | 3 mph SSE | 4% |
| Sunday | 73°F | Mostly Sunny | 3 mph ENE | 0% |
| Sunday Night | 44°F | Mostly Clear | 6 mph E | 0% |
| Monday | 78°F | Sunny | 5 to 9 mph ENE | 0% |
| Monday Night | 47°F | Partly Cloudy | 6 mph E | 1% |
| Tuesday | 79°F | Mostly Sunny | 6 mph ENE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph SSW | 4% |
| Wednesday | 80°F | Sunny | 5 mph ESE | 4% |
| Wednesday Night | 47°F | Mostly Clear | 3 to 7 mph SE | 1% |
| Thursday | 82°F | Sunny | 7 mph ESE | 1% |
| Thursday Night | 49°F | Partly Cloudy | 7 mph SE | 1% |
| Friday | 82°F | Mostly Sunny | 7 mph SSE | 5% |
| Friday Night | 49°F | Partly Cloudy | 8 mph SSW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Rupert (42.619, -113.674). Updated through the day.
Growing snapshot for Rupert
Last spring frost
May 16
First fall frost
Oct 1
Growing season
136 days
Hardiness zone
6a
More local growing data for Rupert: nearby ZIP 83350 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Minidoka Dam, Id (5.6 mi from Rupert). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.