Boulder weather in April
April in Boulder: cool, a little rain, with reliable snow — a great time to visit.
#7 of 12 months in Boulder · #532 of 897 destinations to visit in April · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Boulder in April
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Boulder climate normals — April
| Daytime high | 15°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | -1°C / 30°F | |
| Rainfall | 52 mm / 2 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 53% | 🍃 comfortable |
| Dew point | -4°C / 25°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 13.3 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 23.2 cm / 9.1 in | |
| Air quality (US AQI) | 52 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Boulder in April — FAQ
- Is April a good time to visit Boulder?
- April in Boulder: cool, a little rain, with reliable snow — a great time to visit. It ranks #7 of 12 months for Boulder on SeasonMap's comfort score (78/100).
- What is the weather like in Boulder in April?
- In April, Boulder averages a daily high of 15.4°C and a low of -1°C, with about 51.6 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Boulder in April?
- Boulder has a mean US Air Quality Index of about 52 in April.
- Does it snow in Boulder in April?
- Boulder sees roughly 23.2 cm of snowfall in April.