Boulder, CO weather in March
Expect cool, snowy weather in Boulder in March, with highs near 57°F and lows near 29°F. Rain or snow falls on about 8 days. Snowfall averages about 15.7 in. Pack for snow.
- Normal high
- 57°F
- Normal low
- 29°F
- Wet days
- 8
- 2.0 in total
- Snowfall
- 15.7 in
- snow on the ground 6 days
How March changes from start to finish
| March 1 | March 31 | |
|---|---|---|
| Normal high | 52°F | 61°F |
| Normal low | 25°F | 32°F |
| Chance of a wet day | 24% | 29% |
| Sunrise / sunset | 6:34 am / 5:52 pm | 6:46 am / 7:23 pm |
| Daylight | 11.3 h | 12.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical March day
- 6 am32°Fdew point 20°F
- 9 am42°Fdew point 21°F
- Noon50°Fdew point 20°F
- 3 pm53°Fdew point 19°F
- 6 pm46°Fdew point 21°F
- 9 pm39°Fdew point 22°F
NOAA hourly normals (local standard time) from Denver Intl Airport (35 mi away); average wind 11 mph; clear or few clouds in 31% of daytime hours, mostly cloudy or overcast in 53%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below20 of 31
- Snow on the groundsnow depth 1 in or more6 of 31
Average days per March, counted from daily records for each year 1991-2020.
Rain and snow in March
Normal precipitation is 2.0 in; a dry March brings about 1.2 in and a wet one about 2.5 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 15.7 in, with about 4 days of an inch or more.
How March varies from year to year
- Warmest March, 1991-20202012: average high 66°F
- Coolest March2019: average high 50°F
- Wettest March2003: 5.4 in
- Driest March2012: 0.01 in
- Highest reading81°F (March 31, 2012)
- Lowest reading-6°F (March 2, 2002)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
March compared with February and April
| February | March | April | |
|---|---|---|---|
| Normal high | 48°F | 57°F | 63°F |
| Normal low | 22°F | 29°F | 35°F |
| Wet days | 7 | 8 | 10 |
| Comfortable days | 2 | 9 | 14 |
| Daylight | 10.7 h | 12.0 h | 13.3 h |
Highs change by +9°F from February and +6°F into April.
Nearby alternatives in March
- Warmer: Moab, UT250 mi · high 65°F · 6 wet days
- Drier: Greeley, CO41 mi · high 59°F · 5 wet days
- Cooler: Estes Park, CO28 mi · high 47°F · 9 wet days
How Boulder ranks in March
- Normal high206th warmest of 378 cities; 3rd of 17 in Colorado
- Wet days144th driest of 378
- Comfortable days172nd most of 339
What to pack for Boulder in March
- A warm jacket – lows near 29°F, highs near 57°F
- Layers – afternoons near 57°F but nights near 29°F
- A rain jacket or umbrella – rain or snow on about 8 days
- Waterproof boots – about 15.7 in of snow in a typical year
- A hat and gloves – about 20 freezing nights
Heating and cooling
March has 682 heating degree days and 0 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How cold is Boulder in March?
The normal high is 57°F and the normal low is 29°F. From 1991 to 2020 the coldest March reading was -6°F (March 2, 2002).
Does it rain a lot in Boulder in March?
About 8 days in March have at least 0.01 in of precipitation, and the normal total is 2.0 in. The wettest March in 1991-2020 was in 2003 (5.4 in); the driest was in 2012 (0.01 in).
Does it snow in Boulder in March?
Yes. Normal snowfall in March is 15.7 in, and snow covers the ground on about 6 days.
Is March a good time to visit Boulder?
March ranks 6th of 12 months on our comfort score for Boulder (59 out of 100). It has about 9 comfortable days. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Boulder (USC00050848), 1.6 mi S of the city center, 5,484 ft (165 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Denver Intl Airport (USW00003017), 35 mi ESE of the city center, 5,414 ft (95 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Aurora Buckley Fld ANGB (USW00023036), 35 mi SE of the city center, 5,663 ft (344 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Denver International Airport (725650-03017), 35 mi ESE of the city center, 5,404 ft (85 ft higher than the city). Hourly observations, 1991-2020.