July weather forecast and climate
Boise, ID

The golden fall season in Boise, Idaho
The golden fall season in Boise, Idaho

Weather in July

July is a hot summer month in Boise, Idaho, with average temperature varying between 60.6°F (15.9°C) and 87.8°F (31°C).

Temperature

With an average high-temperature of 87.8°F (31°C) and an average low-temperature of 60.6°F (15.9°C), July is the warmest month.

Humidity

The least humid month in Boise is July, with an average relative humidity of 30%.

Rainfall

The month with the least rainfall in Boise, Idaho, is July when the rain falls for 4.5 days and typically collects 0.2" (5mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in Boise is 15h.

Sunshine

With an average of 12.1h of sunshine, July has the most sunshine of the year in Boise.

UV index

July is the month with the highest UV index in Boise, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the average person.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Boise?

July is the warmest month, with an average high-temperature of 87.8°F (31°C) and an average low-temperature of 60.6°F (15.9°C).

What is the temperature in July in Boise?

The average high-temperature, in July, in Boise, is 87.8°F (31°C), while the average low-temperature is 60.6°F (15.9°C).

What is the least humid month in Boise?

With an average relative humidity of 30%, July is the least humid month in Boise, Idaho.

What is the average humidity in July in Boise?

The average relative humidity in July in Boise is 30%.

How much does it rain in Boise in July?

In Boise, during July, the rain falls for 4.5 days and regularly aggregates up to 0.2" (5mm) of precipitation.

What is the driest month in Boise?

The month with the least rainfall in Boise is July when the rain falls for 4.5 days and typically collects 0.2" (5mm) of precipitation.

When it does not snow in Boise?

May through October are months without snowfall in Boise.

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

The average length of the day in July in Boise, Idaho, is 15h.

What month has the most sunshine in Boise?

July has the most sunshine of the year in Boise, with an average of 12.1h of sunshine.

How many hours of sunshine does Boise have in July?

In July, the average sunshine in Boise is 12.1h.

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

The month with the highest UV index in Boise is July, with an average maximum UV index of 7.

What is the UV index reading in July in Boise?

In July, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in July
Boise, ID

Average temperature in July - Boise, ID
  • Average high temperature in July: 87.8°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in July: 60.6°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.2°F).

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Average pressure in July
Boise, ID

Average pressure in July - Boise, ID
  • Average pressure in July: 29.91"

The month with the highest atmospheric pressure is January (30.25").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in July
Boise, ID

Average wind speed in July - Boise, ID
  • Average wind speed in July: 5.6mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

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Average humidity in July
Boise, ID

Average humidity in July - Boise, ID
  • Average humidity in July: 30%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (30%).

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Average rainfall in July
Boise, ID

Average rainfall in July - Boise, ID
  • Average rainfall in July: 0.2"

The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in July
Boise, ID

Average rainfall days in July - Boise, ID
  • Average rainfall days in July: 4.5 days

The month with the highest number of rainy days is March (16.2 days).
The month with the least rainy days is July (4.5 days).

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Average snowfall in July
Boise, ID

Average snowfall in July - Boise, ID
  • Average snowfall in July: 0"

The month with the highest snowfall is December (6.65").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Boise, ID

Average snowfall days in July - Boise, ID
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is December (9.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Boise, ID

Average daylight in July / Average sunshine in July - Boise, ID
  • Average daylight in July: 15h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in July: 12.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in July
Boise, ID

Average sunshine days in July - Boise, ID
  • Average sunshine days in July: 23.6 days

The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is March (12.1 days).

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Average UV index in July
Boise, ID

Average UV index in July - Boise, ID
  • Average UV index in July: 7

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in July
Boise, ID

Average cloud cover in July - Boise, ID
  • Average cloud cover in July: 8

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in July
Boise, ID

Average visibility in July - Boise, ID
  • Average visibility in July: 6mi

Months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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