July weather forecast and climate
Boise, ID

The golden fall season in Boise, Idaho, with the tall city buildings
The golden fall season in Boise, Idaho, with the tall city buildings
July is a tropical summer month in Boise, Idaho, with average temperature varying between 60.6°F (15.9°C) and 87.8°F (31°C).

Temperature

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).

Humidity

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

Rainfall

July is the month with the least rainfall in Boise. Rain falls for 4.5 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

In Boise snow does not fall in May through October.

Daylight

In July, the average length of the day is 15h.

Sunshine

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

UV index

With an average maximum UV index of 7, July is the month with the highest UV index in Boise. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in July transform into the following instructions:
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. 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 Boise?

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.

What is the temperature in July in Boise?

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

What is the least humid month in Boise?

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

What is the average humidity in July in Boise?

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

How many days does it rain in July in Boise?

In Boise, Idaho, 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?

July is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.2" (5mm) of precipitation.

When it does not snow in Boise?

In Boise snow does not fall in May through October.

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

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

What month has the most sunshine in Boise?

The month with the most sunshine in Boise, Idaho, 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 in July is 12.1h.

When is the highest UV index in Boise?

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

What is the UV index intensity in July in Boise?

The average daily maximum UV index in July in Boise, Idaho, is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.
Average temperature in July - Boise, ID
  • Average high temperature in July: 31°C

The warmest month (with the highest average high temperature) is July (31°C).
The month with the lowest average high temperature is December (1.5°C).

  • Average low temperature in July: 15.9°C

The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is December (-4.9°C).

Average pressure in July - Boise, ID
  • Average pressure in July: 1012.9mbar

The month with the highest atmospheric pressure is January (1024.4mbar).
The month with the lowest atmospheric pressure is June (1012.6mbar).

Average wind speed in July - Boise, ID
  • Average wind speed in July: 9km/h

The windiest month (with the highest average wind speed) is April (11.4km/h).
The calmest month (with the lowest average wind speed) is January (8.4km/h).

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: 5mm

The wettest month (with the highest rainfall) is March (56mm).
The driest month (with the least rainfall) is July (5mm).

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: 0mm

The month with the highest snowfall is December (169mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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).

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).

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: 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).

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: 10km

Months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is January (8km).