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The best time to visit Yellowstone
June, July, August and September — daytime highs around 29°C. Every number on this page is measured, not guessed.
Yellowstone month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | 5°C | -3°C | 10 | |
| February | 7°C | -3°C | 9 | |
| March | 14°C | 3°C | 11 | |
| April | 18°C | 7°C | 11 | |
| May | 24°C | 12°C | 11 | Shoulder |
| June | 29°C | 18°C | 9 | Best |
| July | 30°C | 20°C | 14 | Best |
| August | 29°C | 19°C | 10 | Best |
| September | 27°C | 16°C | 8 | Best |
| October | 20°C | 11°C | 10 | Shoulder |
| November | 12°C | 3°C | 5 | |
| December | 9°C | 1°C | 11 |
The short version
Warmest: July, around 30°C by day. Coolest: January, around 5°C by day and -3°C at night. Wettest: July with about 14 wet days. Driest: November with about 5.
If you want fewer people: May, October sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Yellowstone?
The best months are June, July, August and September, when daytime highs sit around 29°C.
What is the hottest month in Yellowstone?
July, with daytime highs around 30°C.
What is the wettest month in Yellowstone?
July, with about 14 wet days. The driest is November with about 5.
When is the cheapest time to visit Yellowstone?
Prices follow the weather. The months either side of the best ones — May, October — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Yellowstone, Indiana. Source: Open-Meteo.