Updated October 2026
Minidoka National Historic Site Weather by Month
Minidoka National Historic Site is warmest in July, when the nearest NOAA climate station averages a high of 89°F and a low of 56°F, and coldest in January, with an average high of 36°F and an average low of 20°F. December is the wettest month, with about 1.6 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 7.9 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Minidoka National Historic Site can differ from these, particularly with elevation.
Warmest month
Jul
89°F avg high
Coldest month
Jan
20°F avg low
Wettest month
Dec
1.6 in avg
Longest days
Jun
15.1 h of daylight
Average weather at Minidoka by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 36°F | 20°F | 1.3 in | 9.2 h |
| February | 41°F | 23°F | 0.8 in | 10.3 h |
| March | 52°F | 29°F | 1.1 in | 11.7 h |
| April | 59°F | 34°F | 1.0 in | 13.2 h |
| May | 69°F | 42°F | 1.3 in | 14.4 h |
| June | 79°F | 49°F | 0.7 in | 15.1 h |
| July | 89°F | 56°F | 0.2 in | 14.8 h |
| August | 88°F | 54°F | 0.3 in | 13.7 h |
| September | 78°F | 45°F | 0.5 in | 12.3 h |
| October | 63°F | 34°F | 1.0 in | 10.8 h |
| November | 47°F | 26°F | 1.1 in | 9.5 h |
| December | 36°F | 20°F | 1.6 in | 8.9 h |
| Year total | 10.9 in |
NOAA 1991–2020 climate normals from station USC00104140, 7.9 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Minidoka is at that time of year.
Minidoka weather by season
Winter: December to February
Average highs climb from 36°F in December to 41°F in February, with average lows between 20°F and 23°F. The average low is at or below freezing in all three months. Together the three months average 3.7 inches of precipitation, about 34% of the yearly total and more than in any other season. Daylight is at its shortest, about 8.9 hours in December.
Spring: March to May
Average highs climb from 52°F in March to 69°F in May, with average lows between 29°F and 42°F. The average low is at or below freezing in March. Together the three months average 3.4 inches of precipitation, about 31% of the yearly total. Daylight lengthens from about 11.7 hours in March to 14.4 in May.
Summer: June to August
Average highs peak at 89°F in July, between 79°F in June and 88°F in August, with average lows between 49°F and 56°F. Together the three months average 1.2 inches of precipitation, about 11% of the yearly total and less than in any other season. Daylight is at its longest, about 15.1 hours in June.
Fall: September to November
Average highs fall from 78°F in September to 47°F in November, with average lows between 26°F and 45°F. The average low is at or below freezing in November. Together the three months average 2.6 inches of precipitation, about 24% of the yearly total. Daylight shortens from about 12.3 hours in September to 9.5 in November.
What the National Park Service says about the weather
Jerome and Twin Falls, Idaho, gets 10 inches of rain per year. On average, there are 213 sunny days per year here. The July high is around 94 degrees. The January low is 22. High winds are common, and little shade is available at the site.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Minidoka
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 42.68°N, 114.25°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Minidoka National Historic Site →
Weather and crowds together
July is both the warmest month and the busiest, with about 2.6× the visitors of the park's average month. December is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Minidoka National Historic Site. For hotels, cabins and rentals close to the park, see where to stay near Minidoka.
Where to stay near Minidoka
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Top-rated places to stay near Minidoka
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Frequently Asked Questions
July is the warmest month at Minidoka National Historic Site, with an average high of 89°F and an average low of 56°F. That is the 1991–2020 average at the nearest long-record NOAA station, 7.9 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Minidoka National Historic Site, with an average low of 20°F and an average high of 36°F, based on NOAA 1991–2020 climate normals.
December is the wettest month, with about 1.6 inches of precipitation. July is the driest, at about 0.2 inches. The station records about 10.9 inches of precipitation in an average year.
Daylight at Minidoka National Historic Site runs from about 8.9 hours a day in December to about 15.1 hours in June, computed from the park's latitude.
Weather at nearby parks
36 mi away · warmest in July (92°F)
50 mi away · warmest in July (86°F)
53 mi away · warmest in July (83°F)
115 mi away · warmest in July (90°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00104140), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (2017–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.