July weather forecast
Sun River, MT

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Weather in July

July is a moderately hot summer month in Sun River, Montana, with an average temperature fluctuating between 82.2°F (27.9°C) and 55.6°F (13.1°C).

Temperature

With average high and low temperatures of 82.2°F (27.9°C) and 55.6°F (13.1°C) respectively, July is Sun River's warmest month.

Heat index

During July, the heat index is estimated at 82.4°F (28°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in July is 45%.

Rainfall

January and July are months with the least rain when the rain falls for 9 days and typically aggregates up to 0.63" (16mm) of rain.

Snowfall

June through August are months without snowfall in Sun River.

Daylight

The average length of the day in July is 15h and 31min.
On the first day of July, sunrise is at 5:34 am and sunset at 9:27 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 9:02 pm MDT.

Sunshine

The month with the most sunshine is July, with an average of 11.9h of sunshine.

UV index

July is the month with the highest UV index in Sun River, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 in July interprets into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. 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. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Sun River?

Sun River's warmest temperatures are experienced in July, with average high temperatures of 82.2°F (27.9°C) and lows of 55.6°F (13.1°C).

What are July temperatures in Sun River?

The high-temperature, in July, in Sun River, records 82.2°F (27.9°C), while the low-temperature is 55.6°F (13.1°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 82.4°F (28°C).

What is the average humidity in July in Sun River?

The average relative humidity in July in Sun River, Montana, is 45%.

What is the driest month in Sun River?

The months with the least rainfall in Sun River, Montana, are January and July Rain falls for 9 days and accumulates 0.63" (16mm) of rain.

How much does it rain in Sun River in July?

In Sun River, Montana, during July, the rain falls for 9 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When it does not snow in Sun River?

June through August are months without snowfall in Sun River.

What is the average length of the day in July in Sun River?

In July, the average day length in Sun River is 15h and 31min.

When is the sunrise / sunset in July in Sun River?

On the first day of July in Sun River, Montana, sunrise is at 5:34 am and sunset at 9:27 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 9:02 pm MDT.

What month has the most sunshine in Sun River?

July has the most sunshine of the year in Sun River, Montana, with an average of 11.9h of sunshine.

How many hours of sunshine does Sun River have in July?

In July, the average sunshine duration in Sun River is 11.9h.

When is the highest UV index in Sun River?

The month with the highest UV index in Sun River, Montana, is July, with an average maximum UV index of 6.

How high is the UV index in July in Sun River?

In July, the average daily maximum UV index in Sun River is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Sun River, MT

Average temperature in July - Sun River, MT
  • Average high temperature in July: 82.2°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).

  • Average low temperature in July: 55.6°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).

Average pressure in July
Sun River, MT

Average pressure in July - Sun River, MT
  • Average pressure in July: 29.92"Hg

The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in July
Sun River, MT

Average wind speed in July - Sun River, MT
  • Average wind speed in July: 7.5mph

The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

Average humidity in July
Sun River, MT

Average humidity in July - Sun River, MT
  • Average humidity in July: 45%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).

Average rainfall in July
Sun River, MT

Average rainfall in July - Sun River, MT
  • Average rainfall in July: 0.63"

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").

Average rainfall days in July
Sun River, MT

Average rainfall days in July - Sun River, MT
  • Average rainfall days in July: 9 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in July
Sun River, MT

Average snowfall in July - Sun River, MT
  • Average snowfall in July: 0"

The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").

Average snowfall days in July
Sun River, MT

Average snowfall days in July - Sun River, MT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in July /
Average sunshine in July
Sun River, MT

Average daylight in July / Average sunshine in July - Sun River, MT
  • Average daylight in July: 15h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in July: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in July
Sun River, MT

Average sunshine days in July - Sun River, MT
  • Average sunshine days in July: 17.7 days

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).

Average UV index in July
Sun River, MT

Average UV index in July - Sun River, MT
  • Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in July
Sun River, MT

Average cloud cover in July - Sun River, MT
  • Average cloud cover in July: 14

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).

Average visibility in July
Sun River, MT

Average visibility in July - Sun River, MT
  • Average visibility in July: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Sun River, Montana, USA

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