Boulder
Montana, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Boulder, MT

July in Boulder, Montana, is a warm summer month, with temperature in the range of an average low of 32°F (0°C) and an average high of 79.7°F (26.5°C).

Temperature

The warmest month is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 32°F (0°C).

Humidity

In July, the average relative humidity is 47%.

Rainfall

In Boulder, it is raining for 9.9 days, with typically 1.02" (26mm) of accumulated precipitation. In Boulder, during the entire year, the rain falls for 133.7 days and collects up to 16.38" (416mm) of precipitation.

Snowfall

July and August are months without snowfall in Boulder.

Daylight

The average length of the day in Boulder is 15.3h.

Sunshine

The month with the most sunshine is July, with an average of 11.7h of sunshine.

UV index

July is the month with the highest UV index in Boulder, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for 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.

What is the warmest month in Boulder?

The warmest month is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 32°F (0°C).

What is the temperature in July in Boulder?

The average high-temperature, in July, in Boulder, Montana, is 79.7°F (26.5°C), while the average low-temperature is 32°F (0°C).

What is the average humidity in July in Boulder?

The average relative humidity in July in Boulder is 47%.

How much does it rain in Boulder in July?

In July, in Boulder, Montana, the rain falls for 9.9 days. Throughout July, 1.02" (26mm) of precipitation is accumulated.

Does it snow in Boulder in July?

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

When it does not snow in Boulder?

In Boulder, Montana, snow does not fall in July and August.

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

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

What month has the most sunshine in Boulder?

The month with the most sunshine in Boulder is July, with an average of 11.7h of sunshine.

How long on average sun shines in July in Boulder?

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

When is the highest UV index in Boulder?

July is the month with the highest UV index, with an average maximum UV index of 6.

How high is the UV index in July in Boulder?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in July - Boulder, MT
  • Average high temperature in July: 79.7°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (27°F).

  • Average low temperature in July: 0°F

Months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (0°F).
Coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (0°F).

Average humidity in July - Boulder, MT
  • Average humidity in July: 47%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).

Average rainfall in July - Boulder, MT
  • Average rainfall in July: 1.02"

The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the lowest rainfall) is December (0.79").

Average rainfall days in July - Boulder, MT
  • Average rainfall days in July: 9.9 days

The month with the highest number of rainy days is May (18.2 days).
The month with the lowest number of rainy days is November (7.5 days).

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

The month with the highest snowfall is February (9.72").
Months with the lowest snowfall are July and August (0").

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

The month with the highest number of snowfall days is February (18 days).
Months with the lowest number of snowfall days are July and August (0 days).

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

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

  • Average sunshine in July: 11.7h

The month with most sunshine is July (Average sunshine: 11.7h).
Months with least sunshine are January and December (Average sunshine: 5.6).

Average UV index in July - Boulder, MT
  • Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).