United States of America
Boise sees feels-like daytime highs peak around 34.1°C in July and nighttime lows bottom out near -4.7°C in January. December is the wettest month (~39 mm), while July is the driest (~6 mm). For sunshine, August leads with about 81% clear skies.
Based on mild feels-like temperatures and low rain chances, the most comfortable months are June, September, and August — expect around 15.5–29.5°C with roughly 11% chance of rain on a given day in June.
| Month | Low / High °C | Rain % | Rainfall | Clear skies | Wind |
|---|---|---|---|---|---|
| January | -4.7° / 1.1° | 17% | 32 mm | 42% | 10.7 kph |
| February | -1.5° / 5.6° | 17% | 28 mm | 43% | 11.2 kph |
| March | 2.5° / 11.9° | 21% | 30 mm | 43% | 11.9 kph |
| April | 6.2° / 17.7° | 19% | 26 mm | 49% | 12 kph |
| May | 10.7° / 22.8° | 19% | 26 mm | 54% | 11.8 kph |
| June☀ | 15.5° / 29.5° | 11% | 16 mm | 67% | 11.3 kph |
| July | 18.6° / 34.1° | 5% | 6 mm | 80% | 10.8 kph |
| August☀ | 18° / 32.5° | 5% | 6 mm | 81% | 10.4 kph |
| September☀ | 12.7° / 25.7° | 8% | 12 mm | 73% | 10.4 kph |
| October | 6.8° / 17.1° | 14% | 22 mm | 60% | 10.6 kph |
| November | 0.5° / 7.5° | 21% | 35 mm | 47% | 11 kph |
| December | -4.6° / 1.3° | 19% | 39 mm | 43% | 11 kph |
Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).
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