Weather on May 31
Fort Collins, CO
55 Years of Data
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 56 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 41% 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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 81° | 49° | 65° | — | — |
| 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° | — | — |
Fort Collins, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Fort Collins, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Fort Collins, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Fort Collins, CO
Fort Collins, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.