Climate averages 1991–2020
Westminster (Colorado), United States weather
in March.
A cool, moderately wet month: the 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Westminster (Colorado), United States: daytime highs average 10.7°C and nights cool to about -4.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 47 mm of rain on roughly 8 days, which makes March a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average March day.
The nearest other city in this atlas is Arvada (6 km away). In March its highs average 10.7°C, about as warm as Westminster (Colorado), United States, with 47 mm of rain.
Among the 498 cities listed in the United States, Westminster (Colorado), United States ranks joint 340th of 498 for the warmest March highs and joint 77th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Westminster (Colorado), United States is 4.2°C cooler than that mean.
From March to April, average highs rise by 3.7°C to 14.4°C, and monthly rainfall rises from 47 mm to 70 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Westminster (Colorado), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.6°C-9.6°C | -9.6°C | 22 | 5.2 | 9.710 h |
| February | 5.9°C-8.8°C | -8.8°C | 23 | 5.9 | 10.711 h |
| March, selected | 10.7°C-4.9°C | -4.9°C | 47 | 7.6 | 11.912 h |
| April | 14.4°C-0.5°C | -0.5°C | 70 | 9.9 | 13.213 h |
| May | 19.6°C5.2°C | 5.2°C | 82 | 11.0 | 14.414 h |
| June | 26.1°C10.8°C | 10.8°C | 52 | 8.3 | 14.915 h |
| July | 29.3°C14.5°C | 14.5°C | 41 | 7.2 | 14.715 h |
| August | 28.1°C13.8°C | 13.8°C | 39 | 6.4 | 13.714 h |
| September | 24.1°C9.4°C | 9.4°C | 36 | 5.8 | 12.512 h |
| October | 16.8°C2.3°C | 2.3°C | 40 | 6.1 | 11.211 h |
| November | 9.5°C-5.0°C | -5.0°C | 30 | 5.9 | 10.010 h |
| December | 4.2°C-9.8°C | -9.8°C | 21 | 4.9 | 9.49 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Arvada in MarchUnited States · 6 kmHigh 10.7°C · Low -5.0°C · 47 mm rain
- Thornton in MarchUnited States · 7 kmHigh 10.7°C · Low -4.9°C · 47 mm rain
- Denver in MarchUnited States · 12 kmHigh 10.8°C · Low -4.7°C · 47 mm rain
- Lakewood in MarchUnited States · 15 kmHigh 10.6°C · Low -4.7°C · 47 mm rain
- Aurora (Colorado), United States in MarchUnited States · 21 kmHigh 11.7°C · Low -3.0°C · 35 mm rain
- Boulder in MarchUnited States · 28 kmHigh 10.0°C · Low -4.5°C · 50 mm rain
- Centennial in MarchUnited States · 32 kmHigh 10.2°C · Low -5.2°C · 51 mm rain
- Highlands Ranch in MarchUnited States · 32 kmHigh 10.1°C · Low -5.6°C · 51 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Westminster) is explained once on the Westminster (Colorado), United States year overview and on the Sources, method and limits page.
Denver, Lakewood and Thornton lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.