July weather forecast
Yellowstone National Park, WY

The natural Grand Prismatic hot springs within Yellowstone National Park, Wyoming, with yellow trails and trees and mountains in the background
The natural Grand Prismatic hot springs within Yellowstone National Park, Wyoming, with yellow trails and trees and mountains in the background

Weather in July

July in Yellowstone National Park, Wyoming, is an agreeable summer month, with an average temperature fluctuating between 71.6°F (22°C) and 41.5°F (5.3°C).

Temperature

The warmest month is July, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 41.5°F (5.3°C).

Rainfall

In July, the rain falls for 11 days. Throughout July, 1.62" (41.1mm) of precipitation is accumulated. In Yellowstone National Park, during the entire year, the rain falls for 151 days and collects up to 20.9" (530.8mm) of precipitation.

Snowfall

July and August are months without snowfall.

Daylight

In July, the average length of the day is 15h and 8min.
On the first day of the month, sunrise is at 5:41 am and sunset at 9:10 pm. On the last day of July, sunrise is at 6:08 am and sunset at 8:48 pm MDT.

Sunshine

July has the most sunshine of the year in Yellowstone National Park, Wyoming, with an average of 11h of sunshine.

UV index

With an average maximum UV index of 10, July is the month with the highest UV index in Yellowstone National Park, Wyoming. A UV Index reading of 8 to 10 represents a very high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 10 in July interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the warmest month in Yellowstone National Park?

The warmest month in Yellowstone National Park, Wyoming, is July, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 41.5°F (5.3°C).

How much does it rain in Yellowstone National Park in July?

In Yellowstone National Park, during July, the rain falls for 11 days and regularly aggregates up to 1.62" (41.1mm) of precipitation.

When it does not snow in Yellowstone National Park?

In Yellowstone National Park, snow does not fall in July and August.

Does it snow in Yellowstone National Park in July?

In July, it doesn't snow. June is the latest month when it typically snows.

How many hours of daylight does Yellowstone National Park have in July?

In Yellowstone National Park, the average day length in July is 15h and 8min.

When are sunrise and sunset in July in Yellowstone National Park?

On the first day of July in Yellowstone National Park, Wyoming, sunrise is at 5:41 am and sunset at 9:10 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:48 pm MDT.

What month has the most sunshine in Yellowstone National Park?

July has the most sunshine of the year in Yellowstone National Park, with an average of 11h of sunshine.

How many hours of sunshine does Yellowstone National Park have in July?

In Yellowstone National Park, the average sunshine duration in July is 11h.

When is the highest UV index in Yellowstone National Park?

July is the month with the highest UV index in Yellowstone National Park, Wyoming, with an average maximum UV index of 10.

What is the UV index reading in July in Yellowstone National Park?

In Yellowstone National Park, the average daily maximum UV index in July is 10. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation.
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average UV index

Average temperature in July
Yellowstone National Park, WY

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).

[Resources]

Average rainfall in July
Yellowstone National Park, WY

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").

[Resources]

Average rainfall days in July
Yellowstone National Park, WY

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).

[Resources]

Average snowfall in July
Yellowstone National Park, WY

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").

[Resources]

Average snowfall days in July
Yellowstone National Park, WY

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).

[Resources]

Average daylight in July /
Average sunshine in July
Yellowstone National Park, WY

Average daylight in July / Average sunshine in July - Yellowstone National Park, WY
  • Average daylight in July: 15h and 8min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • 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).

[Resources]

Average UV index in July
Yellowstone National Park, WY

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location