Boise
Idaho, USA
Long-term weather forecast
Long-term weather forecast

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 in Boise, Idaho, is a tropical summer month, with average temperature fluctuating between 91.2°F (32.9°C) and 60.4°F (15.8°C).

Temperature

The warmest month is July, with an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 60.4°F (15.8°C).

Humidity

July is the least humid month, with an average relative humidity of 36.1%.

Rainfall

In July, in Boise, the rain falls for 2.6 days. Throughout July, 0.3" (8.4mm) of precipitation is accumulated. Throughout the year, there are 87.6 rainfall days, and 11.7" (297.9mm) of precipitation is accumulated.

Snowfall

In Boise snow does not fall in May through September.

Daylight

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

Sunshine

July has the most sunshine of the year, with an average of 12.9h of sunshine.

UV index

June and July, with an average maximum UV index of 9, are months with the highest UV index. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 9 interpret into the following advice:
Take extra precautions. Protection against sun damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the warmest month in Boise?

July is the warmest month in Boise, with an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 60.4°F (15.8°C).

What is the temperature in July in Boise?

In July, the average high-temperature is 91.2°F (32.9°C), and the average low-temperature is 60.4°F (15.8°C).

What is the least humid month in Boise?

The least humid month in Boise is July, with an average relative humidity of 36.1%.

What is the average humidity in July in Boise?

In July, the average relative humidity is 36.1%.

How many days does it rain in July in Boise?

In July, in Boise, the rain falls for 2.6 days. Throughout July, 0.3" (8.4mm) of precipitation is accumulated.

When it does not snow in Boise?

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

How many hours of daylight does Boise have in July?

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

What month has the most sunshine in Boise?

With an average of 12.9h of sunshine, July has the most sunshine of the year in Boise.

How long on average sun shines in July in Boise?

In July, the average sunshine in Boise, Idaho, is 12.9h.

When is the highest UV index in Boise?

June and July, with an average maximum UV index of 9, are months with the highest UV index in Boise.

What is the UV index reading in July in Boise?

In July, the average daily maximum UV index in Boise, Idaho, is 9. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays.
Average temperature in July - Boise, ID
  • Average high temperature in July: 91.2°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (37.5°F).

  • Average low temperature in July: 60.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (24°F).

Average humidity in July - Boise, ID
  • Average humidity in July: 36.1%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (36.1%).

Average rainfall in July - Boise, ID
  • Average rainfall in July: 0.3"

The wettest month (with the highest rainfall) is December (1.6").
The driest month (with the lowest rainfall) is August (0.2").

Average rainfall days in July - Boise, ID
  • Average rainfall days in July: 2.6 days

The month with the highest number of rainy days is December (11.8 days).
The month with the lowest number of rainy days is August (2.4 days).

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

The month with the highest snowfall is December (7").
Months with the lowest snowfall are May, June, July, August and September (0").

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 (6 days).
Months with the lowest number of snowfall days are May, 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 shortest days is December (Average daylight: 9h).

  • Average sunshine in July: 12.9h

The month with most sunshine is July (Average sunshine: 12.9h).
The month with least sunshine is December (Average sunshine: 3.4h).

Average UV index in July - Boise, ID
  • Average UV index in July: 9

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).