Yellowstone weather in September
Cool, with occasional showers. Average highs of 15°C and lows of 5°C, with around 9 rainy days expected throughout the month.
While September isn't our top-rated month for Yellowstone, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
15°C
Average low
5°C
Rainy days
9 days
Best months to visit
July
What to do in Yellowstone in September
Whatever the weather, Yellowstone rewards curious visitors. Here are some of the best ways to spend your time:
Explore
Dine
Culture
Nature
Shopping
Day trips
What to pack for September
Layer up — a mid-weight jacket, jumpers, and comfortable trousers. Waterproof shoes are recommended. Scarves and gloves may be useful in the evenings.
Browse other months
January
-6C
Cold, with some rainy days.
February
-6C
Cold, with some rainy days.
March
-1C
Cold, with some rainy days.
April
2C
Cold, with some rainy days.
May
8C
Cold, with some rainy days.
June
15C
Cool, with some rainy days.
Recommended
July
22C
Mild and comfortable, with occasional showers.
August
20C
Mild and comfortable, with occasional showers.
September (you are here)
15C
Cool, with occasional showers.
October
7C
Cold, with some rainy days.
November
-1C
Cold, with some rainy days.
December
-6C
Cold, with some rainy days.
Book your September trip to Yellowstone
Find hotels, tours and experiences for the perfect escape.
