Yellowstone Weather in June: What to Expect and What to Pack
Monthly averages are NOAA 1991-2020 climate normals. Check the NPS alerts page for road and trail closures before you go.
By John Love I've been here · Sept 2025Facts checked against NPS.gov · Updated October 6, 2026June in Yellowstone70°F days, 42°F nights at Mammoth Hot Springs (6,195 ft), with about 1.9 inches of precipitation and 0.3 inches of snow. Variable, with highs around 70°F at Mammoth but snow still possible at high elevations. Rivers run high with snowmelt, waterfalls peak, and crowds build.
How elevation changes the weather in Yellowstone
Estimated average high and low for each area in June, highest first. Air cools about 3.5°F for every 1,000 feet you climb, so the same day can feel like two different seasons.
- 8,859 ftDunraven Pass61° / 33°
- 7,782 ftYellowstone Lake64° / 36°
- 6,200 ftMammoth Hot Springs70° / 42°
Estimates based on the long-term average at Mammoth Hot Springs (6,195 ft). Check the live forecast for each area above before you go.
June compared with the months around it
| Month | Avg high | Avg low | Precipitation | Snowfall |
|---|---|---|---|---|
| May | 60°F | 35°F | 1.8 in | 1.7 in |
| June | 70°F | 42°F | 1.9 in | 0.3 in |
| July | 81°F | 48°F | 1.3 in | 0.0 in |
June is 10°F warmer than May by day, and July warms another 11°F. It is the wettest month of the year here.
Weather hazards to plan for
- Sudden snowstorms and whiteouts any month at high elevations, including Dunraven Pass and Sylvan Pass, can close roads with little notice.
- Afternoon lightning storms in July and August on exposed ridges, open valleys and lakeshores.
- Extreme winter cold, with nights well below 0°F at Lake, Old Faithful and West Yellowstone; frostbite and hypothermia risk for oversnow travelers.
- Cold water: Yellowstone Lake stays very cold year-round, and capsized boaters can quickly become hypothermic even in summer.
- Wildfire smoke and haze in mid-to-late summer, plus icy, snow-packed roads in spring and fall shoulder seasons.
What to pack for Yellowstone in June
Picked from Yellowstone's average weather in June.
Nights average 42°F at Mammoth Hot Springs, and higher campgrounds run colder. A bag rated about 10°F below the low keeps you warm.
Shop at Coleman
Afternoon thunderstorms are common here in June. A full-coverage rainfly keeps you and your gear dry, and a rain jacket belongs in every day pack.
Shop at ColemanRain jacket on Amazon
With nights near 42°F, hot meals and drinks make mornings much easier. Stoves are usually allowed even when campfires are banned.
Shop at Coleman
In bear country, coolers must go in your vehicle or a food locker when not in use.
Shop at ColemanSome links above are affiliate links. If you buy through them, we may earn a commission at no extra cost to you. How this works
Yellowstone in June: questions
What is the weather like in Yellowstone in June?
At Mammoth Hot Springs (6,195 ft), June averages 70°F by day and 42°F at night, with about 1.9 inches of precipitation. Variable, with highs around 70°F at Mammoth but snow still possible at high elevations. Rivers run high with snowmelt, waterfalls peak, and crowds build.
How cold does Yellowstone get at night in June?
Nights average 42°F at Mammoth Hot Springs. Up at Dunraven Pass (8,859 ft) expect it about 9°F colder, near 33°F.
Does it snow in Yellowstone in June?
Rarely at Mammoth Hot Springs, which averages only a trace to 0.3 inches in June. Higher areas can see snow, especially early or late in the month.
How does June compare with May?
June averages 70°F by day, 10°F warmer than May, and July averages 81°F.
What should I wear in Yellowstone in June?
Plan for layers you can add and remove: a fleece or light puffy for mornings and evenings. Check the forecast for each area you will visit a few days before you go.
More for your Yellowstone trip
- Yellowstone National Park guideFees, hours, maps, where to stay and a first-day plan.
- Best Time to Visit Yellowstone National ParkWhen to visit Yellowstone, month by month: road opening and closing dates, crowds, weather, wildlife timing and what is open in each season.
- How Many Days Do You Need in Yellowstone?How many days to spend in Yellowstone, with 1-, 2-, 3- and 4-day itineraries by area, NPS drive times around the Grand Loop and where to base yourself.
- Best Hikes in Yellowstone National ParkThe best day hikes in Yellowstone, from the Grand Prismatic Overlook to Mount Washburn and Avalanche Peak, with NPS distances, elevation gain and 2026 closures.
- Camping in Yellowstone National Park: Campgrounds, Reservations and TipsAll 11 Yellowstone campgrounds with 2026 dates, fees and RV limits, how six-month reservations work, the 2027 move to Recreation.gov and backcountry permits.