When is the best time to visit Boise?
- The best time for a sunbathing holiday is June, July, August. Average maximum temperatures are up to +34°C in July and it has 23 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during April - October.
- If you want to avoid wet weather, then your choice is January, February, December with the lowest chance of rain.
Average weather in Boise in different months
In September the weather is great. There are an average of 21 sunny days in September and the temperature ranges from +12°C to +28°C.
March, April, May, June, July, August, October, November usually has good weather. Average maximum temperature reaches +34°C during July.
In January, February, December the weather is average. Expect around 24 rainy days, and the precipitation amounts to approximately 41 mm in December.
Climate in Boise
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +18°C | +20°C | +26°C | +33°C | +38°C | +42°C | +43°C | +42°C | +40°C | +35°C | +24°C | +17°C |
| Average Maximum Temperature | |||||||||||
| +4°C | +8°C | +13°C | +18°C | +23°C | +29°C | +34°C | +33°C | +28°C | +20°C | +10°C | +4°C |
| Minimum Temperature | |||||||||||
| -25°C | -25°C | -12°C | -4°C | -2°C | +3°C | +5°C | +5°C | 0°C | -9°C | -22°C | -32°C |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 76 | 68 | 59 | 52 | 49 | 43 | 33 | 34 | 41 | 51 | 67 | 75 |
| Rain, mm | |||||||||||
| 36 | 33 | 49 | 41 | 42 | 21 | 5 | 9 | 17 | 27 | 41 | 41 |
| Snow, mm | |||||||||||
| 14 | 8 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 15 |
| Average wind speed, m/s | |||||||||||
| 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Sunny Days | |||||||||||
| 6 | 7 | 9 | 10 | 12 | 16 | 23 | 22 | 21 | 16 | 9 | 6 |
| Cloud Days | |||||||||||
| 11 | 8 | 7 | 7 | 7 | 5 | 3 | 4 | 4 | 7 | 8 | 10 |
| Rainy Days | |||||||||||
| 7 | 9 | 13 | 13 | 11 | 7 | 4 | 4 | 5 | 8 | 10 | 8 |
| Snowy Days | |||||||||||
| 7 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 |
Average Temperature
Humidity
Rain
Snow
FAQ
What is the hottest month in Boise?
What is the coldest month in Boise?
Is Boise worth visiting in winter?
When does it rain the least in Boise?
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.
