June weather forecast
Yellowstone National Park, WY

June welcomes summer in Yellowstone National Park, bringing mild and comfortable temperatures. A stark contrast is observed from the previous month's rainfall, with a drop to 2.3" (58mm) in June. The month provides broad daylight extending over 15 hours, extra time to appreciate the park's natural beauty. Despite the reduced precipitation, thunderstorms are a common sight. The park's abundant fauna make the most of the tranquil weather, dotting the expansive landscapes.

Temperature

In June, the meteorological conditions in Yellowstone National Park change with the average high-temperature moving from a fresh 52°F (11.1°C) in May to a refreshing 61.5°F (16.4°C). Nightly readings in June display a noticeable downturn from daily highs, with the average low-temperature registering an icy 35.4°F (1.9°C).

Rainfall

In Yellowstone National Park, in June, during 14.4 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Yellowstone National Park, during the entire year, the rain falls for 151 days and collects up to 20.91" (531mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. June is the last month it regularly snows. During 0.9 snowfall days, in June, Yellowstone National Park aggregates 1.3" (33mm) of snow. Throughout the year, there are 91.4 snowfall days, and 193.7" (4920mm) of snow is accumulated.

Daylight

The month with the longest days is June, with an average of 15h and 30min of daylight.
On the first day of June, sunrise is at 5:40 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 9:10 pm MDT.

Sunshine

The average sunshine in June is 10h.

UV index

In Yellowstone National Park, the average daily maximum UV index in June is 9. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 9 in June leads to these guidelines:
It is crucial to take precautions; skin and eyes can get damaged if left unprotected. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take note! UV radiation from the Sun can double in intensity due to snow reflection.