Home › Weather › Yellowstone Weather
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Civic Maple Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Yellowstone weather is driven by high elevation, with cool summers and harsh winters. The live forecast above shows current conditions. Summer daytime highs average 22–25°C, but nights can drop to near 0°C. Winter temperatures often fall below –20°C, and snow can fall any month.
What is the weather in Yellowstone year round?
The park has four distinct seasons. Summer (June–August) is mild and often stormy in the afternoons. Autumn is crisp and calm, with occasional early snow. Winter (November–March) is cold and deep with snow. Spring is wet and muddy, with a slow thaw. Because elevation ranges from 1,600 m to 3,460 m, conditions vary by location. The west side tends to be wetter than the east.
How does elevation affect Yellowstone weather?
Every 300 m of elevation gain roughly drops the temperature by 2°C. The park’s average elevation is about 2,400 m, so nights are cool even in July. Higher areas near the Continental Divide are often 5–10°C colder than the lower valleys, and winds can be strong at mountain passes.
Does it ever snow in Yellowstone in July?
Yes. While uncommon, snow has been recorded in every month. In July, brief snow flurries can occur at higher elevations, though they rarely accumulate. Most summer precipitation falls as rain or hail in afternoon thunderstorms.
What is the best month for warm, dry weather?
Late July and early August are the warmest and most stable, with daytime highs near 25°C and fewer rainstorms. June is wetter and September brings crisp mornings. Check the 10-day forecast before you go.
Where can I see live conditions, like a Yellowstone weather webcam?
The National Park Service offers several webcams at key sites such as Old Faithful and Mammoth Hot Springs. They show real-time visibility and snow cover. Use them alongside the live forecast above to plan your visit.