Minidoka National Historic Site
Park Historic internment site commemorating Japanese-American WWII incarceration
Eastern Idaho’s Minidoka National Historic Site preserves a WWII Japanese American incarceration camp with foundations, interpretive exhibits and memorials; visitors come for civil‑rights history and site interpretation.
Minidoka National Historic Site commemorates the Minidoka Relocation Center, one of the sites where Japanese Americans were incarcerated during World War II; it preserves and interprets the camp’s history and physical remains. The unit recognises the forced removal, detention and challenges faced by those incarcerated there between 1942 and 1945.
Visitors encounter exposed building foundations, a memorial cemetery and interpretive panels that describe camp life, administration and the broader wartime policies that produced the relocation program. The site focuses on education and commemoration rather than full structural reconstruction.
The camp was established in 1942 by the U.S. government as part of the wartime removal of Japanese Americans from the West Coast and remained in operation until 1945. During that period thousands of people were interned at Minidoka and associated facilities.
The historic site lies in south-central Idaho near the towns of Jerome and Rupert on the Snake River Plain and is administered by the National Park Service as a unit dedicated to interpretation and preservation.
- Scale and remains: Approximately 9,000 people were confined at the Minidoka Relocation Center during its operation; the site preserves foundations, a cemetery and interpretive exhibits that explain the history of Japanese American incarceration.
How to Get to Minidoka National Historic Site #
Minidoka is near Jerome in south-central Idaho, roughly 40-60 minutes from Twin Falls by car. The site is best reached by private vehicle; there is limited public transit in the region. From Twin Falls, take US-93 south and local roads toward Rupert/Jerome and follow signs to the historic site.
Tips for Visiting Minidoka National Historic Site #
- Check seasonal opening times for visitor centers and any ranger-led programs-some events occur only in summer.
- Combine a visit with nearby historic sites and recreational paths along the Snake River for broader context.
- Pack insect repellent in summer-the river plains and marshes attract mosquitoes.
Best Time to Visit Minidoka National Historic Site #
Best in summer for ranger programs and accessible facilities; autumn offers quieter conditions for reflection and photography.
Weather & Climate near Minidoka National Historic Site #
Minidoka National Historic Site's climate is classified as Cold Semi-Arid - Cold Semi-Arid climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -8°C to 32°C. Semi-arid with limited rainfall.
January
January is the coldest month with highs of 1°C and lows of -8°C. The wettest month with 36 mm of rain.
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February
February is freezing with highs of 5°C and lows of -6°C. Light rainfall.
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March
March is cold with highs of 11°C and lows of -2°C. Light rainfall.
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April
April is cold with highs of 16°C and lows of 1°C. Light rainfall.
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May
May is cool with highs of 21°C and lows of 5°C. Light rainfall.
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June
June is cool with highs of 26°C and lows of 9°C. Light rainfall.
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July
July is the warmest month with highs of 32°C and lows of 12°C. The driest month with just 6 mm.
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August
August is mild with highs of 31°C and lows of 11°C. Almost no rain.
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September
September is cool with highs of 25°C and lows of 6°C. Light rainfall.
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October
October is cold with highs of 18°C and lows of 1°C. Light rainfall.
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November
November is cold with highs of 8°C and lows of -4°C. Moderate rainfall (33 mm).
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December
December is freezing with highs of 2°C and lows of -8°C. Moderate rainfall (31 mm).