Weather in Boise in July 2026
- July is usually the hottest month of the year in Boise;
- July is usually the driest month of the year in Boise
Average weather
Average temperature in Boise in July
Going from a maximum of +40°C during the day to a minimum of +12°C during the night, the temperature in July averages around +36°C.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +36°C to +37°C.
Is Boise warm or cold in July?
Boise is typically hot in July.
Maximum temperatures go up compared to the previous month from +29°C to +34°C. The minimum temperature also goes up from +13°C to +17°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
July is the hottest month in Boise, here is the comparison with other months:
Climate in Boise in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +34°C | +33°C | ||||
| Min. temperature | ||||||
| +3°C | +5°C | +5°C | ||||
| Max. temperature | ||||||
| +42°C | +43°C | +42°C | ||||
| Rainfall | ||||||
| 21 mm | 5 mm | 9 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 43% | 33% | 34% | ||||
| Air pressure | ||||||
| 1011 HPa | 1010 HPa | 1010 HPa | ||||
| Sunny days | ||||||
| 16 | 23 | 22 | ||||
| Cloudy days | ||||||
| 5 | 3 | 4 | ||||
| Rainy days | ||||||
| 7 | 4 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July weather is still as good as in June. It’s getting warmer as July arrives. The average maximum temperature goes up from +29°C to +34°C during the day. As July arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 21 mm to 5 mm. It feels drier, as humidity decreases from 43% to 33%. The average wind speed doesn’t change much during July, staying around 2 m/s. The good news is there are likely to be more sunny days in July, from 16 to 23.
August brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Boise is gradually decreasing during July, going from 3 m/s to 2 m/s over the course of the month.
How was the weather last July in Boise?
Climate Change over Years
The climate in Boise in July has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+16°C) and the highest in 2012 (+20°C). The driest year was 2002 with only 219 mm of rainfall, and the wettest year was 2024 with 653 mm.
FAQ
Is July a good time to visit Boise?
Can you sunbathe in Boise in July?
Is Boise rainy in July?
Is it sunny in Boise in July?
Other cities in USA
Monthly weather in Boise
Source of the data
For this page, we’ve looked at the typical weather in Boise, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
