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

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

Humidity

The least humid month 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

In Boise, Idaho, snow does not fall in May through October.

Daylight

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

UV index

With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 7 in July, converts into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Frequently asked questions

What month is the hottest?

The month of July sees the average highest temperatures, reaching 87.8°F (31°C) at the peak and 60.6°F (15.9°C) at the low.

How hot is it in July?

July temperatures vary between a high-temperature of 87.8°F (31°C) and a low-temperature of 60.6°F (15.9°C).

What is the least humid month?

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

What is the average humidity in July?

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

What is the driest month?

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 July, it is raining for 4.5 days, with typically 0.2" (5mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Boise have in July?

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

What time are sunrise and sunset in July?

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, sunrise is at 6:33 am and sunset at 9:08 pm MDT.

What month has the most sunshine?

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

How many hours of sunshine does Boise have in July?

The average sunshine duration in July is 12.1h.

When is the highest UV index?

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

How high is the UV index in July?

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

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Boise, Idaho, USA

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