Rupert, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rupert, a city in Minidoka County, Idaho.
Tonight
45°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 45. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
7-day forecast for Rupert
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 34% |
| Saturday | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 to 9 mph WSW | 62% |
| Saturday Night | 44°F | Partly Cloudy | 3 mph S | 5% |
| Sunday | 73°F | Mostly Sunny | 5 mph ENE | 0% |
| Sunday Night | 46°F | Mostly Clear | 5 mph E | 0% |
| Monday | 79°F | Sunny | 5 to 8 mph ENE | 0% |
| Monday Night | 48°F | Partly Cloudy | 5 mph E | 0% |
| Tuesday | 78°F | Mostly Sunny | 5 mph ENE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph SSW | 2% |
| Wednesday | 80°F | Sunny | 5 mph E | 2% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph E | 2% |
| Thursday | 82°F | Sunny | 7 mph E | 2% |
| Thursday Night | 50°F | Partly Cloudy | 6 mph ESE | 1% |
| Friday | 83°F | Mostly Sunny | 7 mph SSE | 4% |
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.