Climate averages 1991–2020
Fort Collins weather
in March.
A cool, fairly dry month: the 8th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Fort Collins: daytime highs average 10.7°C and nights cool to about -4.1°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 38 mm of rain on roughly 7 days, which makes March a fairly dry month (the 6th 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 Loveland (21 km away). In March its highs average 10.9°C, about as warm as Fort Collins, with 38 mm of rain.
Among the 498 cities listed in the United States, Fort Collins ranks joint 340th of 498 for the warmest March highs and joint 48th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Fort Collins is 4.2°C cooler than that mean.
From March to April, average highs rise by 3.8°C to 14.5°C, and monthly rainfall rises from 38 mm to 64 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
Fort Collins 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-8.2°C | -8.2°C | 16 | 4.0 | 9.610 h |
| February | 5.7°C-7.5°C | -7.5°C | 18 | 4.9 | 10.611 h |
| March, selected | 10.7°C-4.1°C | -4.1°C | 38 | 6.9 | 11.912 h |
| April | 14.5°C0.3°C | 0.3°C | 64 | 9.6 | 13.313 h |
| May | 19.5°C5.6°C | 5.6°C | 87 | 11.6 | 14.414 h |
| June | 25.6°C11.1°C | 11.1°C | 54 | 8.6 | 15.015 h |
| July | 29.3°C14.7°C | 14.7°C | 44 | 7.6 | 14.815 h |
| August | 28.2°C14.0°C | 14.0°C | 37 | 6.6 | 13.814 h |
| September | 23.8°C9.6°C | 9.6°C | 39 | 5.8 | 12.513 h |
| October | 16.3°C2.9°C | 2.9°C | 40 | 6.9 | 11.211 h |
| November | 9.1°C-3.7°C | -3.7°C | 26 | 5.3 | 10.010 h |
| December | 4.2°C-7.8°C | -7.8°C | 16 | 3.8 | 9.39 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
- Loveland in MarchUnited States · 21 kmHigh 10.9°C · Low -4.4°C · 38 mm rain
- Greeley in MarchUnited States · 36 kmHigh 12.9°C · Low -2.3°C · 29 mm rain
- Longmont in MarchUnited States · 47 kmHigh 11.0°C · Low -3.9°C · 42 mm rain
- Boulder in MarchUnited States · 65 kmHigh 10.0°C · Low -4.5°C · 50 mm rain
- Thornton in MarchUnited States · 80 kmHigh 10.7°C · Low -4.9°C · 47 mm rain
- Westminster (Colorado), United States in MarchUnited States · 83 kmHigh 10.7°C · Low -4.9°C · 47 mm rain
- Arvada in MarchUnited States · 87 kmHigh 10.7°C · Low -5.0°C · 47 mm rain
- Denver in MarchUnited States · 94 kmHigh 10.8°C · Low -4.7°C · 47 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 Fort Collins) is explained once on the Fort Collins year overview and on the Sources, method and limits page.
Loveland lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.