Yellowstone is a year-round destination but timing dramatically affects weather, crowds, and prices. Here’s the month-by-month breakdown.
The TL;DR
Best months: May (fewer crowds, open access) or September (best wildlife + fall colors + crowds dropping).
Worst months: July-August for max crowds. November-April for road closures.
Month-by-month breakdown
January
Most of the park closed. Only Mammoth area accessible. Snow coach tours $200-400.
February
Snow coach + snowmobile tours. Few tourists. Wildlife on plains.
March
Most roads still closed. Some access expanding. Wolf watching in Lamar Valley.
April
Park beginning to open. Bears emerging. Some roads still closed.
May
Most roads open. Wildflowers starting. Best month for fewer crowds + open access.
June
Peak waterfall season. Wildflowers. Crowds increasing. Mosquitoes appearing.
July
Peak tourism. Hot midday. Geysers active. Book accommodation 6+ months ahead.
August
Still peak. Forest fire smoke common. Wildlife less visible (hot).
September
Best month overall – wildlife active, fall colors starting, crowds dropping.
October
Snow possible mid-month. Most lodging closes. Wildlife visible. Beautiful.
November
Most roads closed by mid-month. Mammoth area open.
December
Snow coach season. Quiet wonderland. Limited access.
What this means for booking
- Flights/transportation: Peak season 2-3x off-season rates
- Hotels/lodging: Book 4-6 months ahead for peak
- National park reservations: Required for many parks in peak season – book ASAP
Related guides
- Best travel credit cards
- Cheap flights tools
- Best photography spots in USA
- USA Traveler’s Hub – all guides
FAQs
When’s the cheapest time to visit Yellowstone?
Off-season months typically have 40-60% lower lodging rates and lower crowds.
Do I need reservations for Yellowstone?
Most popular US national parks now require timed entry reservations during peak season. Book 3+ months ahead.
What’s the best month to visit Yellowstone?
May (fewer crowds, open access) or September (best wildlife + fall colors + crowds dropping).
What’s the worst time to visit Yellowstone?
July-August for max crowds. November-April for road closures.
How far in advance should I book accommodation near Yellowstone?
Peak season: 6+ months. Shoulder season: 2-3 months. Off-season: 4-6 weeks.