July weather forecast and climate
Grantsdale, MT

July is a moderately hot summer month in Grantsdale, Montana, with average temperature fluctuating between 77°F (25°C) and 46.8°F (8.2°C).

Temperature

July is the warmest month, with an average high-temperature of 77°F (25°C) and an average low-temperature of 46.8°F (8.2°C).

Humidity

In July, the average relative humidity in Grantsdale, Montana, is 51%.

Rainfall

In July, in Grantsdale, the rain falls for 8 days. Throughout July, 0.79" (20mm) of precipitation is accumulated. In Grantsdale, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.

Snowfall

In Grantsdale, Montana, snow does not fall in June through August.

Daylight

In Grantsdale, the average length of the day is 15.3h.

Sunshine

Months with the most sunshine are July and August, with an average of 11.7h of sunshine.

UV index

With an average maximum UV index of 5, July is the month with the highest UV index in Grantsdale. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the warmest month in Grantsdale?

With an average high-temperature of 77°F (25°C) and an average low-temperature of 46.8°F (8.2°C), July is the warmest month.

What is the temperature in July in Grantsdale?

In July, in Grantsdale, the average high-temperature is 77°F (25°C), and the average low-temperature is 46.8°F (8.2°C).

What is the average humidity in July in Grantsdale?

In July, the average relative humidity is 51%.

How many days does it rain in July in Grantsdale?

In July, in Grantsdale, the rain falls for 8 days. Throughout July, 0.79" (20mm) of precipitation is accumulated.

When it does not snow in Grantsdale?

June through August are months without snowfall in Grantsdale, Montana.

What is the average length of the day in July in Grantsdale?

The average length of the day in July in Grantsdale, Montana, is 15.3h.

What are the months with the most sunshine in Grantsdale?

Months with the most sunshine in Grantsdale, Montana, are July and August, with an average of 11.7h of sunshine.

How long on average sun shines in July in Grantsdale?

In July, the average sunshine in Grantsdale is 11.7h.

What is the month with the highest UV index in Grantsdale?

With an average maximum UV index of 5, July is the month with the highest UV index.

What is the UV index reading in July in Grantsdale?

In July, the average daily maximum UV index in Grantsdale, Montana, is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.
Average temperature in July - Grantsdale, MT
  • Average high temperature in July: 77°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).

  • Average low temperature in July: 46.8°F

The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).

Average pressure in July - Grantsdale, MT
  • Average pressure in July: 29.97"

The month with the highest atmospheric pressure is January (30.21").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in July - Grantsdale, MT
  • Average wind speed in July: 4.3mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in July - Grantsdale, MT
  • Average humidity in July: 51%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in July - Grantsdale, MT
  • Average rainfall in July: 0.79"

The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").

Average rainfall days in July - Grantsdale, MT
  • Average rainfall days in July: 8 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in July - Grantsdale, MT
  • Average snowfall in July: 0"

The month with the highest snowfall is February (13.03").
Months with the least snowfall are June, July and August (0").

Average snowfall days in July - Grantsdale, MT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (19.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in July / Average sunshine in July - Grantsdale, MT
  • Average daylight in July: 15.3h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in July: 11.7h

Months with the most sunshine are July and August (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in July - Grantsdale, MT
  • Average sunshine days in July: 18.9 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in July - Grantsdale, MT
  • Average UV index in July: 5

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

Average cloud cover in July - Grantsdale, MT
  • Average cloud cover in July: 14

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in July - Grantsdale, MT
  • Average visibility in July: 6mi

Months with the highest visibility are May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February, March and December (4mi).