Weather on March 15
Fort Collins, CO
55 Years of Data
Avg High
55°F
Avg Low
29°F
Warmest
2003
59°F avg
Coldest
2002
22°F avg
About This Date
March 15th in Fort Collins, CO typically brings cool spring weather, with average highs around 55°F and lows near 29°F — a 26°F daily swing. Over 56 years of records, the warmest March 15th was in 2003 (59°F average), while the coldest was 2002 (22°F) — a 37°F range across recorded history. Precipitation has occurred on 18% of recorded March 15th dates, with snow falling 16% of the time (heaviest snowfall: 9"). The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for March 15th in Fort Collins, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 57° | 25° | 41° | 0.03" | 0.1" |
| 2025 | 48° | 29° | 38° | — | — |
| 2024 | 40° | 31° | 35° | 1.27" | 3.5" |
| 2023 | 72° | 34° | 53° | — | — |
| 2022 | 68° | 26° | 47° | — | — |
| 2021 | 39° | 15° | 27° | 0.03" | 0.1" |
| 2020 | 53° | 30° | 42° | — | — |
| 2019 | 45° | 15° | 30° | — | — |
| 2018 | 67° | 33° | 50° | 0.08" | — |
| 2017 | 78° | 31° | 54° | — | — |
| 2016 | 47° | 34° | 40° | — | — |
| 2015 | 79° | 37° | 58° | — | — |
| 2014 | 56° | 38° | 47° | — | — |
| 2013 | 76° | 40° | 58° | — | — |
| 2012 | 71° | 45° | 58° | — | — |
| 2011 | 58° | 33° | 45° | — | — |
| 2010 | 56° | 31° | 43° | — | — |
| 2009 | 63° | 23° | 43° | — | — |
| 2008 | 47° | 27° | 37° | — | — |
| 2007 | 55° | 34° | 44° | — | — |
| 2006 | 58° | 23° | 40° | — | — |
| 2005 | 43° | 12° | 27° | — | — |
| 2004 | 56° | 37° | 46° | — | — |
| 2003warmest | 70° | 49° | 59° | — | — |
| 2002coldest | 33° | 10° | 22° | 0.05" | 0.2" |
| 2001 | 47° | 28° | 37° | — | — |
| 2000 | 58° | 29° | 43° | 2.03" | 9" |
| 1999 | 60° | 35° | 48° | — | — |
| 1998 | 61° | 28° | 44° | — | — |
| 1997 | 34° | 13° | 23° | 0.3" | 2.8" |
| 1996 | 53° | 27° | 40° | — | — |
| 1995 | 69° | 29° | 49° | — | — |
| 1994 | 68° | 27° | 47° | — | — |
| 1993 | 60° | 36° | 48° | — | — |
| 1992 | 62° | 29° | 45° | — | — |
| 1991 | 40° | 27° | 33° | — | — |
| 1990 | 46° | 23° | 35° | — | — |
| 1989 | 54° | 26° | 40° | — | — |
| 1988 | 37° | 21° | 29° | — | — |
| 1987 | 48° | 32° | 40° | — | — |
| 1986 | 49° | 32° | 40° | 1.57" | 1.7" |
| 1985 | 63° | 23° | 43° | — | — |
| 1984 | 56° | 35° | 45° | — | — |
| 1983 | 43° | 31° | 37° | 1.63" | 4" |
| 1982 | 61° | 32° | 46° | — | — |
| 1981 | 60° | 28° | 44° | — | — |
| 1980 | 67° | 31° | 49° | — | — |
| 1979 | 56° | 26° | 41° | — | — |
| 1978 | 42° | 25° | 33° | — | — |
| 1977 | 45° | 16° | 30° | 0.25" | 2" |
| 1976 | 42° | 29° | 35° | — | — |
| 1975 | 51° | 35° | 43° | — | — |
| 1974 | 49° | 31° | 40° | — | — |
| 1973 | 43° | 23° | 33° | — | — |
| 1972 | 63° | 30° | 46° | — | — |
| 1971 | 49° | 26° | 37° | — | — |
56 years of data from FT COLLINS