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Photo by Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons.
Yellowstone in September
sweet spot · the best month to go
The year in Yellowstone
Tap a month for its page
- JanJYellowstone in January: avoid
- FebFYellowstone in February: avoid
- MarMYellowstone in March: avoid
- AprAYellowstone in April: avoid
- MayMYellowstone in May: ok, busy
- JunJYellowstone in June: good, busy
- JulJYellowstone in July: sweet spot, busy
- AugAYellowstone in August: good, busy
- SepSYellowstone in September: sweet spot
- OctOYellowstone in October: ok
- NovNYellowstone in November: avoid
- DecDYellowstone in December: avoid
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
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Book with the airline
Where to stay
Book direct
Luxury
Things to do
Car hire
Rent direct
Travel insurance
Check whether your bank card or home insurance already covers this trip.
If the trip needs a visa, the travel agent or visa centre usually sells the cover it asks for.
Mobile data (eSIM)
Your own plan's EU roaming may already cover this.
Renting a pocket Wi-Fi is the other common way to stay connected.
These are sites people in book with. Each opens in a new tab, on the site's own pages.
The numbers
| Daily high | 17°C |
|---|---|
| Nightly low | 6°C |
| Feels like, afternoon | 14°C |
| Rainy days, 1 mm or more | 5 · 45 mm |
| Humidity | 56% |
| Sunshine | 10.7 h/day |
| Daylight | 12.5 h/day |
| Crowds | 100 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
How busy it gets
Public holidays in September
Holidays crowd a place out and push fares up around them; they count toward the crowd score above.
What September is known for
- Shoulder season — Foliage changes and cooler temperatures lead to fewer crowds.
Written by a language model from the climate figures; the numbers above are measured and win where the two disagree.
Yellowstone in pictures
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DXR, CC BY-SA 4.0, via Wikimedia Commons
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Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
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Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
What to pack
- Warm layers for the evenings, which drop to about 6°C.
- Sun protection: about 11 hours of sunshine a day.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
Type A and B plugs at 120 V. Drives on the right. The currency is the United states dollar. No UK Foreign Office advice against travel. Global Affairs Canada: Exercise normal security precautions. Everything for United States: cost of living, languages, emergency numbers and health.
On arrival in Yellowstone: the apps, paying, getting around, tipping and the emergency numbers.
September elsewhere
- Everywhere in September
- Mountains in September
- Wildlife in September
- North America in September
- United States in September
In September from
The other months at Yellowstone
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