Yellowstone National Park
United States UNESCO World Heritage Site
Yellowstone National Park is a national park and biosphere reserve spanning Wyoming, Idaho, and Montana. It is a UNESCO World Heritage Site and is the 11th most looked-up sight in the United States on English Wikipedia. The park covers 8,983 km2 at an elevation of 2,470 m and was established in 1872.
Planning a visit
July and August are the warmest months, with daily highs of about 20 °C to 21 °C and lows between 7 °C and 8 °C. These months also have fewer rainy days, with about 9 rainy days in July and August. In comparison, June is wetter with about 96 mm of rain. The coldest temperatures are in December and January, with lows between -12 °C and -13 °C.
The nearest airport is Yellowstone Airport in West Yellowstone, 50 km away. Salt Lake City International Airport is a hub located 441 km from the park. The park is 2,827 km from Washington, D.C. and is part of the Greater Yellowstone Ecosystem.
Weather by month
The warmest month is July, with an average high of 21 °C. The wettest is June, with about 96 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | -5 | -3 | 1 | 4 | 9 | 15 | 21 | 20 | 15 | 7 | -1 | -6 |
| Average low, °C | -12 | -11 | -8 | -5 | -2 | 3 | 7 | 8 | 4 | -2 | -8 | -13 |
| Rainfall, mm | 53 | 43 | 52 | 61 | 90 | 96 | 68 | 57 | 53 | 52 | 60 | 55 |
| Rainy days | 15 | 15 | 15 | 14 | 17 | 12 | 9 | 9 | 8 | 12 | 13 | 15 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
