July weather forecast
Boise, ID

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

Weather in July

July brings the heatwave to Boise, Idaho, with peak summer temperatures. Although it's the dry season, occasional thunderstorms can bring a rapid change in the weather. Despite being the hottest month, the comfortable wind speed makes the searing heat bearable during the day. Alongside, long daylight hours allow plenty of time to enjoy sunny days. The highest temperatures are often recorded in July, typically soaring to around 87.8°F (31°C).

Temperature

Boise's temperatures peak on average in July, reaching 87.8°F (31°C) at their highest and 60.6°F (15.9°C) at their lowest.

Humidity

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

Rainfall

The month with the least rainfall 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 in Boise.

Daylight

In Boise, Idaho, the average length of the day in July is 15h and 3min.
On the first day of the month, sunrise is at 6:07 am and sunset at 9:30 pm. On the last day of July, sunrise is at 6:33 am and sunset at 9:08 pm MDT.

Sunshine

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

UV index

The month with the highest UV index in Boise, Idaho, is July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during July translates into the following directions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the hottest time of year in Boise?

In Boise, July is the warmest month, with temperatures averaging a high of 87.8°F (31°C) and a low of 60.6°F (15.9°C).

How hot is July in Boise?

In July, the average high-temperature and low-temperature in Boise, Idaho, are 87.8°F (31°C) and 60.6°F (15.9°C) respectively.

What is the least humid month in Boise?

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

What is the average humidity in July in Boise?

In Boise, the average relative humidity in July is 30%.

What is the driest month in Boise?

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

How many days does it rain in July in Boise?

In Boise, Idaho, in July, during 4.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

When it does not snow in Boise?

May through October are months without snowfall in Boise, Idaho.

How many hours of daylight does Boise have in July?

The average day length in July in Boise is 15h and 3min.

What time are sunrise and sunset in July in Boise?

In July, on the first day of the month, sunrise is at 6:07 am and sunset at 9:30 pm. On the last day of the month, in Boise, sunrise is at 6:33 am and sunset at 9:08 pm MDT.

What month has the most sunshine in Boise?

The month with the most sunshine in Boise is July, with an average of 12.1h of sunshine.

How many hours of sunshine does Boise have in July?

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

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

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

What is the UV index reading in July in Boise?

In Boise, Idaho, the average daily maximum UV index in July is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe 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
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"Hg

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

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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").
The 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).
The 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 and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in July: 12h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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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).
The 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

The 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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Boise, Idaho, USA

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