Yellowstone, USAQuick decision
When to visit Yellowstone?
🌞 Best time overall
July
🌡️ Optimal temperature
8°C–22°C in July
🌧 Least rain
28% rainy days in July
🌧 Wettest month
February (50%)
📅 Best score
8.5/10
By trip type
Best time by type of trip
Geysers & Old FaithfulMay–September — Old Faithful every 90 min, Grand Prismatic.
WildlifeMay–October — bison, bears, wolves and elk in Lamar Valley.
HikingJune–September — 1,600 km of trails, canyons and waterfalls.
Hot SpringsYear-round — Mammoth Hot Springs, travertine terraces.
Monthly climate data
Yellowstone weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ❄️ January | -12°C | -6°C | 37% | 1.6 | 7.0h | 4.0/10 |
| ❄️ February | -12°C | -6°C | 50% | 2.9 | 7.4h | 3.0/10 |
| ❄️ March | -9°C | -1°C | 45% | 2.1 | 10.0h | 4.1/10 |
| 🌨️ April | -6°C | 3°C | 45% | 2.3 | 11.8h | 4.3/10 |
| 🌦️ May | -2°C | 8°C | 40% | 1.8 | 13.3h | 5.5/10 |
| ⛅ June | 3°C | 15°C | 31% | 1.7 | 14.8h | 7.2/10 |
| 🌤️ July | 8°C | 22°C | 28% | 0.9 | 14.8h | 8.5/10 |
| 🌤️ August | 9°C | 21°C | 29% | 1.4 | 13.0h | 7.9/10 |
| ⛅ September | 5°C | 16°C | 30% | 2.0 | 11.7h | 7.1/10 |
| 🌦️ October | -1°C | 6°C | 38% | 2.2 | 10.0h | 4.3/10 |
| ❄️ November | -7°C | -1°C | 39% | 1.8 | 8.0h | 4.0/10 |
| ❄️ December | -12°C | -5°C | 42% | 2.4 | 5.9h | 3.1/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Challenging climate
Average 3°C, 43% rainy days, 11.7h sunshine/day. Score: 4.6/10.
☀️ Summer (Jun–Aug) — Good time
Average 19°C, 29% rainy days, 14.2h sunshine/day. Score: 7.9/10.
🍂 Autumn (Sep–Nov) — Challenging climate
Average 7°C, 36% rainy days, 9.9h sunshine/day. Score: 5.1/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average -6°C, 43% rainy days, 6.8h sunshine/day. Score: 3.4/10.
Accommodation
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Check availability during the recommended period
Tip : off-peak months (February, March) are cheapest but weather is significantly worse.
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Activities and tours in Yellowstone
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
July is ideal with 28% rainy days and 22°C.
February is the wettest month with 50% rainy days.
Yes, July is the best month with an average of 22°C.
In winter, the average score is 3.4/10. Difficult period — prefer the peak season.
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