Weather on May 31
Fort Collins, CO
55 Years of Data
Avg High
74°F
Avg Low
47°F
Warmest
2002
72°F avg
Coldest
1983
46°F avg
About This Date
May 31st in Fort Collins, CO typically brings pleasant spring weather, with average highs around 74°F and lows near 47°F — a 27°F daily swing. Over 55 years of records, the warmest May 31st was in 2002 (72°F average), while the coldest was 1983 (46°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 42% of May 31st dates historically, with the wettest May 31st recording 1.09" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 31st in Fort Collins, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 56° | 68° | 0.03" | — |
| 2024 | 72° | 50° | 61° | — | — |
| 2023 | 78° | 49° | 63° | — | — |
| 2022 | 64° | 41° | 53° | 0.43" | — |
| 2021 | 64° | 45° | 54° | — | — |
| 2020 | 88° | 57° | 72° | 0.97" | — |
| 2019 | 76° | 42° | 59° | 0.13" | — |
| 2018 | 88° | 49° | 68° | — | — |
| 2017 | 80° | 46° | 63° | — | — |
| 2016 | 66° | 50° | 58° | 0.05" | — |
| 2015 | 82° | 50° | 66° | 0.33" | — |
| 2014 | 80° | 51° | 66° | 0.05" | — |
| 2013 | 72° | 44° | 58° | — | — |
| 2012 | 73° | 45° | 59° | — | — |
| 2011 | 76° | 41° | 58° | — | — |
| 2010 | 80° | 46° | 63° | — | — |
| 2009 | 79° | 48° | 63° | — | — |
| 2008 | 80° | 47° | 63° | — | — |
| 2007 | 76° | 41° | 58° | — | — |
| 2006 | 76° | 47° | 61° | — | — |
| 2005 | 71° | 43° | 57° | 0.03" | — |
| 2004 | 74° | 45° | 59° | — | — |
| 2003 | 74° | 56° | 65° | 0.69" | — |
| 2002warmest | 90° | 55° | 72° | — | — |
| 2001 | 78° | 44° | 61° | — | — |
| 2000 | 77° | 53° | 65° | 0.15" | — |
| 1999 | 69° | 52° | 60° | 0.38" | — |
| 1998 | 73° | 50° | 62° | — | — |
| 1997 | 82° | 49° | 65° | 0.08" | — |
| 1996 | 72° | 46° | 59° | — | — |
| 1995 | 75° | 44° | 60° | 0.33" | — |
| 1994 | 83° | 56° | 69° | — | — |
| 1993 | 78° | 48° | 63° | — | — |
| 1992 | 60° | 42° | 51° | 1.02" | — |
| 1991 | 68° | 54° | 61° | 0.25" | — |
| 1990 | 76° | 44° | 60° | 0.46" | — |
| 1989 | 62° | 44° | 53° | 0.69" | — |
| 1988 | 68° | 50° | 59° | — | — |
| 1987 | 82° | 44° | 63° | — | — |
| 1986 | 77° | 47° | 62° | — | — |
| 1985 | 70° | 44° | 57° | — | — |
| 1984 | 83° | 52° | 67° | — | — |
| 1983coldest | 53° | 39° | 46° | 0.46" | — |
| 1982 | 61° | 43° | 52° | 0.53" | — |
| 1981 | 75° | 50° | 63° | 0.18" | — |
| 1980 | 79° | 44° | 61° | — | — |
| 1979 | 57° | 40° | 48° | 0.53" | — |
| 1978 | 57° | 42° | 50° | 1.09" | — |
| 1977 | 81° | 46° | 63° | — | — |
| 1976 | 76° | 44° | 60° | — | — |
| 1975 | 62° | 45° | 53° | 0.36" | — |
| 1974 | 70° | 44° | 57° | — | — |
| 1973 | 78° | 40° | 59° | — | — |
| 1972 | 84° | 43° | 63° | — | — |
| 1971 | 74° | 41° | 57° | — | — |
55 years of data from FT COLLINS