Yellowstone National Park Weather in August
August in Yellowstone National Park brings high temperatures, with daytime highs of 22°C (72°F) and nights around 3°C (37°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Yellowstone National Park in August
Historically, August sees about 11 days of rain, with a monthly average of 35 mm (1.4 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Yellowstone National Park in August
The temperature in Yellowstone National Park in August is perfect. Daytime highs reach 22°C (72°F), with nights dropping to 3°C (37°F). August is typically considered a summer month. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 3°C (37°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Yellowstone National Park.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Yellowstone National Park's climate page.
Yellowstone National Park Temperature in August
Min Temperature
3°C (37°F)
Max Temperature
22°C (72°F)
Chance of Rain
37%
Precipitation
35 mm (1.4 in)
Rainy days
11 days
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Yellowstone National Park typically stay consistent throughout August, with daily highs averaging around 22°C (72°F). Nights are cold, with lows typically ranging from 3°C (37°F) to 6°C (43°F).
Average temperatures in August
Daily Historical Precipitation
45-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Yellowstone National Park in August
Browse day-by-day weather records for Yellowstone National Park spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yellowstone National Park historical weather extremes in August
Our historical data for Yellowstone National Park spans 2001 to 2025, revealing these weather extremes.
- On August 1, 2003, temperatures climbed to 29°C (84°F), marking the warmest August day on record.
- Yellowstone National Park registered its coldest August night on August 31, 2005, with temperatures dropping to -4°C (25°F).
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
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What to Wear in Yellowstone National Park in August
Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket.What To Do in Yellowstone National Park in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Yellowstone National Park's climate page.
See the full Yellowstone National Park climate overview or explore weather in the United States of America.
