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The weather in Boulder in April is very cold with temperatures between 0°C and 11°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Boulder during the month of April. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Boulder during April. It’s important to get out your snow boots and warm mittens to stay warm while you explore Boulder.
Our weather forecast can give you a great sense of what weather to expect in Boulder in April 2025.
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 |