Boise
August
Weather in Boise for August 2025
Your guide to Boise weather in August - trends and predictions
In general, the average temperature in Boise at the beginning of August is 36 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.7 °F by the end of August.
With an average of 3 rainy days, Boise experiences minimal rainfall in August, ensuring that most days remain pleasantly dry.
- New! Chat with our AI weatherman - it’s amazing and free.
28
Dry days
3
Rainy days
0
Snow days
31°/18°
Temperatures
19 km/h
Avg max wind
23 %
Avg humidity
Boise in August average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  37° | 2 40° | 3  38° | ||||
| 4 33° | 5  37° | 6 34° | 7 33° | 8 34° | 9 34° | 10  33° |
| 11 32° | 12 32° | 13 28° | 14 28° | 15 29° | 16 28° | 17 35° |
| 18 31° | 19 31° | 20 29° | 21 26° | 22 32° | 23 26° | 24  18° |
| 25 20° | 26 25° | 27 32° | 28 21° | 29 27° | 30 30° | 31 32° |
You can click on date
Access Boise weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during August in Boise
See the weather trend as well as the moving average line
August weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Sunny | 37° /22° | 0 mm | 9 | |
| Aug. 2 | Sunny | 40° /24° | 0 mm | 10 | |
| Aug. 3 | Partly cloudy | 38° /26° | 0.6 mm | 9 | |
| Aug. 4 | Sunny | 33° /22° | 0.6 mm | 8 | |
| Aug. 5 | Patchy rain possible | 37° /24° | 0.1 mm | 8 | |
| Aug. 6 | Sunny | 34° /22° | 0 mm | 8 | |
| Aug. 7 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 8 | Partly cloudy | 34° /21° | 0 mm | 8 | |
| Aug. 9 | Patchy rain possible | 34° /20° | 0.8 mm | 7 | |
| Aug. 10 | Cloudy | 33° /21° | 0 mm | 7 | |
| Aug. 11 | Sunny | 32° /19° | 0 mm | 8 | |
| Aug. 12 | Sunny | 32° /20° | 0 mm | 8 | |
| Aug. 13 | Partly cloudy | 28° /22° | 0 mm | 7 | |
| Aug. 14 | Sunny | 28° /16° | 0 mm | 7 | |
| Aug. 15 | Sunny | 29° /18° | 0 mm | 7 | |
| Aug. 16 | Sunny | 28° /15° | 0 mm | 7 | |
| Aug. 17 | Sunny | 35° /19° | 0 mm | 9 | |
| Aug. 18 | Sunny | 31° /19° | 0 mm | 8 | |
| Aug. 19 | Patchy rain possible | 31° /19° | 0.1 mm | 7 | |
| Aug. 20 | Cloudy | 29° /17° | 0 mm | 6 | |
| Aug. 21 | Sunny | 26° /15° | 0 mm | 7 | |
| Aug. 22 | Sunny | 32° /18° | 0 mm | 8 | |
| Aug. 23 | Partly cloudy | 26° /17° | 0 mm | 7 | |
| Aug. 24 | Thundery outbreaks possible | 18° /13° | 0 mm | 4 | |
| Aug. 25 | Patchy rain possible | 20° /12° | 0.1 mm | 5 | |
| Aug. 26 | Sunny | 25° /13° | 0 mm | 7 | |
| Aug. 27 | Sunny | 32° /17° | 0 mm | 8 | |
| Aug. 28 | Sunny | 21° /8° | 0 mm | 6 | |
| Aug. 29 | Sunny | 27° /12° | 0 mm | 7 | |
| Aug. 30 | Sunny | 30° /15° | 0 mm | 8 | |
| Aug. 31 | Sunny | 32° /17° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Boise in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boise forecast closer to your planned date for the most up-to-date weather information.
Boise in August - FAQ
What are the expected maximum and minimum temperatures in Boise during August?
Expect warm days with temperatures around 31°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Boise during August?
Rainfall in Boise during August is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Boise during August?
The average wind speed in Boise during August is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Boise
Explore the daily rainfall trends and prepare for Boises August weather 💧
UV exposure in Boise during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Quick links
You are here
Where is Boise?Get accurate weather forecasts for Boise, located at latitude 43.614 and longitude -116.203. Stay updated with localized weather information tailored for Boise.
Found a mistake?
We appreciate your attention to details. Tell us here.