Weather on April 21
Fort Collins, CO
55 Years of Data
Avg High
63°F
Avg Low
36°F
Warmest
1989
66°F avg
Coldest
2021
31°F avg
About This Date
April 21st in Fort Collins, CO typically brings mild spring weather, with average highs around 63°F and lows near 36°F — a 27°F daily swing. Over 54 years of records, the warmest April 21st was in 1989 (66°F average), while the coldest was 2021 (31°F) — a 35°F range across recorded history. Precipitation has occurred on 35% of recorded April 21st dates, with snow falling 4% of the time (heaviest snowfall: 1.7"). The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Fort Collins, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 34° | 53° | — | — |
| 2024 | 61° | 26° | 43° | — | — |
| 2023 | 47° | 29° | 38° | — | — |
| 2022 | 80° | 40° | 60° | — | — |
| 2021coldest | 35° | 27° | 31° | 0.1" | — |
| 2020 | 71° | 35° | 53° | — | — |
| 2019 | 69° | 49° | 59° | 0.53" | — |
| 2018 | 45° | 33° | 39° | 1.07" | 0.5" |
| 2017 | 48° | 38° | 43° | 1.65" | — |
| 2016 | 69° | 35° | 52° | — | — |
| 2015 | 69° | 34° | 51° | — | — |
| 2014 | 68° | 41° | 55° | — | — |
| 2013 | 61° | 33° | 47° | — | — |
| 2012 | 73° | 43° | 58° | — | — |
| 2011 | 67° | 38° | 52° | 0.81" | — |
| 2010 | 60° | 45° | 52° | 0.48" | — |
| 2009 | 75° | 38° | 56° | — | — |
| 2008 | 64° | 34° | 49° | — | — |
| 2007 | 66° | 42° | 54° | — | — |
| 2006 | 74° | 35° | 54° | — | — |
| 2005 | 61° | 37° | 49° | 0.56" | — |
| 2004 | 54° | 34° | 44° | 0.89" | — |
| 2003 | 65° | 34° | 49° | — | — |
| 2002 | 57° | 27° | 42° | — | — |
| 2001 | 50° | 34° | 42° | 0.46" | — |
| 2000 | 74° | 37° | 55° | — | — |
| 1999 | 64° | 45° | 54° | 0.25" | — |
| 1998 | 62° | 31° | 46° | 0.03" | — |
| 1997 | 64° | 48° | 56° | — | — |
| 1996 | 53° | 35° | 44° | 0.03" | — |
| 1995 | 43° | 37° | 40° | 0.13" | — |
| 1994 | 75° | 43° | 59° | — | — |
| 1993 | 57° | 29° | 43° | — | — |
| 1992 | 69° | 30° | 50° | — | — |
| 1991 | 56° | 40° | 48° | 1.09" | — |
| 1990 | 74° | 41° | 57° | — | — |
| 1989warmest | 88° | 44° | 66° | — | — |
| 1988 | 68° | 41° | 55° | 1.02" | — |
| 1987 | 62° | 30° | 46° | — | — |
| 1986 | 64° | 42° | 53° | 0.18" | — |
| 1985 | 62° | 40° | 51° | — | — |
| 1984 | 42° | 32° | 37° | 0.48" | 1.7" |
| 1983 | 63° | 43° | 53° | 2.51" | — |
| 1982 | 57° | 19° | 38° | — | — |
| 1981 | 66° | 39° | 53° | — | — |
| 1980 | 84° | 40° | 62° | — | — |
| 1979 | 70° | 33° | 51° | — | — |
| 1978 | 65° | 33° | 49° | — | — |
| 1977 | 61° | 31° | 46° | — | — |
| 1976 | 68° | 37° | 53° | — | — |
| 1975 | 60° | 35° | 48° | — | — |
| 1974 | 56° | 36° | 46° | — | — |
| 1972 | 64° | 29° | 46° | — | — |
| 1971 | 57° | 34° | 45° | 0.61" | — |
54 years of data from FT COLLINS