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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

WhenTempForecastWindPrecip
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

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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.