Boulder weather in March
March in Boulder: cold, a little rain, with clean air — a good time to visit.
#9 of 12 months in Boulder · #679 of 897 destinations to visit in March · comfort 69/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Boulder in March
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Boulder climate normals — March
| Daytime high | 9°C / 48°F | 🧥 cold |
|---|---|---|
| Nighttime low | -6°C / 21°F | |
| Rainfall | 60 mm / 2.4 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 63% | 💧 humid |
| Dew point | -7°C / 19°F | |
| Sunshine | 10 h/day | |
| Daylight | 12 h | |
| Wind | 14 km/h / 9 mph | |
| Snowfall | 33.5 cm / 13.2 in | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Boulder in March — FAQ
- Is March a good time to visit Boulder?
- March in Boulder: cold, a little rain, with clean air — a good time to visit. It ranks #9 of 12 months for Boulder on SeasonMap's comfort score (69/100).
- What is the weather like in Boulder in March?
- In March, Boulder averages a daily high of 8.9°C and a low of -6°C, with about 60.3 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Boulder in March?
- Boulder has a mean US Air Quality Index of about 47 in March.
- Does it snow in Boulder in March?
- Boulder sees roughly 33.5 cm of snowfall in March.