Yellowstone National Park weather in September (United States of America)
Curious about the September weather in Yellowstone National Park? This guide provides all the details you need.
In September, Yellowstone National Park generally has moderate temperatures and moderate rainfall. Anticipate daytime temperatures around 17°C, while night temperatures can drop to 0°C.
Yellowstone National Park in September usually receives moderate rainfall, averaging around 40 mm for the month. Rain is expected on roughly 10 days.
If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. While January, February, March, April, October, November and December tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Yellowstone National Park climate page with graphs.
Yellowstone National Park, monthly averages in September
Min Temperature
0°C
Max Temperature
17°C
Chance of Rain
33%
Precipitation
40 mm
Rainy days
10 days
Where to go in the United States of America in September
Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Yellowstone National Park in September?
For visitors traveling to Yellowstone National Park, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Yellowstone National Park.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
