Weather in July
Temperature
July is the warmest month of the year, registering average temperatures as high as 71.6°F (22°C) and as low as 41.5°F (5.3°C).Rainfall
In Yellowstone National Park, during July, the rain falls for 11 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Yellowstone National Park, during the entire year, the rain falls for 151 days and collects up to 20.91" (531mm) of precipitation.Snowfall
In Yellowstone National Park, snow does not fall in July and August.Daylight
In Yellowstone National Park, the average length of the day in July is 15h and 8min.On the first day of the month, sunrise is at 5:42 am and sunset at 9:10 pm. On the last day of July, sunrise is at 6:09 am and sunset at 8:48 pm MDT.
Sunshine
With an average of 11h of sunshine, July has the most sunshine of the year.UV index
July is the month with the highest UV index, with an average maximum UV index of 10. A UV Index reading of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 10 during July leads to these advisories:
Remember to safeguard yourself. Rapid damage can occur to skin and eyes without protection. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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What is the usual temperature for Yellowstone National Park in July?
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When it does not snow?
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Average temperature in July
Yellowstone National Park, WY
- Average high temperature in July: 71.6°F
The warmest month (with the highest average high temperature) is July (71.6°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in July: 41.6°F
The month with the highest average low temperature is July (41.6°F).
The coldest months (with the lowest average low temperature) are January and February (1.2°F).
Average rainfall in July
Yellowstone National Park, WY
- Average rainfall in July: 1.6"
The wettest month (with the highest rainfall) is May (2.5").
The driest month (with the least rainfall) is October (1.2").
Average rainfall days in July
Yellowstone National Park, WY
- Average rainfall days in July: 11 days
The month with the highest number of rainy days is January (16.8 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in July
Yellowstone National Park, WY
- Average snowfall in July: 0"
The month with the highest snowfall is January (34.3").
The months with the least snowfall are July and August (0").
Average snowfall days in July
Yellowstone National Park, WY
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in July /
Average sunshine in July
Yellowstone National Park, WY
- Average daylight in July: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in July: 11h
The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 4h).
Average UV index in July
Yellowstone National Park, WY
- Average UV index in July: 10
The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 1).
Yellowstone National Park, Wyoming, USA
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