Click on a day for an hourly weather forecast
The temperatures in Boulder in August are comfortable with low of 13°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Boulder during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Boulder in August 2024.
If you’re planning to visit Boulder in the near future, we highly recommend that you review the 14 day weather forecast for Boulder before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -8° | 4 | 16 | 10 | 27 mm | Awful | Boulder in January |
| February | 1° / -8° | 4 | 10 | 14 | 54 mm | Awful | Boulder in February |
| March | 7° / -3° | 4 | 17 | 10 | 83 mm | Bad | Boulder in March |
| April | 11° / 0° | 6 | 17 | 7 | 95 mm | Bad | Boulder in April |
| May | 15° / 5° | 11 | 17 | 3 | 160 mm | Bad | Boulder in May |
| June | 23° / 12° | 7 | 23 | 0 | 89 mm | Good | Boulder in June |
| July | 26° / 15° | 8 | 23 | 0 | 115 mm | Good | Boulder in July |
| August | 25° / 13° | 5 | 26 | 0 | 75 mm | Perfect | Boulder in August |
| September | 21° / 10° | 4 | 25 | 0 | 66 mm | Good | Boulder in September |
| October | 13° / 2° | 3 | 24 | 4 | 47 mm | Bad | Boulder in October |
| November | 7° / -3° | 2 | 21 | 7 | 33 mm | Bad | Boulder in November |
| December | 1° / -8° | 5 | 15 | 11 | 30 mm | Awful | Boulder in December |