Weather on May 17
Fort Collins, CO
55 Years of Data
About This Date
May 17th in Fort Collins, CO typically brings pleasant spring weather, with average highs around 72°F and lows near 45°F — a 27°F daily swing. Over 56 years of records, the warmest May 17th was in 1996 (71°F average), while the coldest was 1983 (40°F) — a 31°F range across recorded history. Precipitation has occurred on 38% of recorded May 17th dates, with snow falling 2% of the time (heaviest snowfall: 2.5"). The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for May 17th in Fort Collins, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 71° | 46° | 59° | 0.36" | — |
| 2025 | 69° | 47° | 58° | — | — |
| 2024 | 84° | 47° | 65° | — | — |
| 2023 | 79° | 47° | 63° | — | — |
| 2022 | 83° | 50° | 66° | 0.13" | — |
| 2021 | 65° | 49° | 57° | 2.26" | — |
| 2020 | 71° | 40° | 55° | — | — |
| 2019 | 69° | 49° | 59° | 0.25" | — |
| 2018 | 83° | 49° | 66° | — | — |
| 2017 | 72° | 41° | 56° | 0.1" | — |
| 2016 | 49° | 37° | 43° | 0.43" | — |
| 2015 | 70° | 43° | 56° | — | — |
| 2014 | 66° | 45° | 55° | 0.15" | — |
| 2013 | 85° | 52° | 68° | — | — |
| 2012 | 80° | 49° | 64° | — | — |
| 2011 | 60° | 42° | 51° | 0.25" | — |
| 2010 | 74° | 40° | 57° | — | — |
| 2009 | 81° | 41° | 61° | — | — |
| 2008 | 80° | 45° | 62° | — | — |
| 2007 | 72° | 47° | 59° | — | — |
| 2006 | 83° | 47° | 65° | — | — |
| 2005 | 71° | 51° | 61° | — | — |
| 2004 | 70° | 48° | 59° | — | — |
| 2003 | 85° | 50° | 67° | — | — |
| 2002 | 59° | 44° | 52° | 0.33" | — |
| 2001 | 67° | 49° | 58° | 0.74" | — |
| 2000 | 74° | 43° | 58° | 2.08" | — |
| 1999 | 61° | 35° | 48° | 0.05" | — |
| 1998 | 83° | 44° | 63° | — | — |
| 1997 | 85° | 49° | 67° | — | — |
| 1996warmest | 82° | 61° | 71° | — | — |
| 1995 | 58° | 43° | 50° | 3.86" | — |
| 1994 | 85° | 50° | 67° | — | — |
| 1993 | 60° | 52° | 56° | 0.33" | — |
| 1992 | 79° | 44° | 61° | — | — |
| 1991 | 65° | 40° | 52° | — | — |
| 1990 | 70° | 34° | 52° | — | — |
| 1989 | 72° | 41° | 56° | — | — |
| 1988 | 85° | 52° | 68° | — | — |
| 1987 | 72° | 54° | 63° | 0.66" | — |
| 1986 | 58° | 38° | 48° | — | — |
| 1985 | 70° | 49° | 59° | 0.18" | — |
| 1984 | 70° | 45° | 57° | — | — |
| 1983coldest | 48° | 32° | 40° | 3.94" | 2.5" |
| 1982 | 67° | 42° | 54° | 0.05" | — |
| 1981 | 48° | 42° | 45° | 3.35" | — |
| 1980 | 46° | 38° | 42° | 1.19" | — |
| 1979 | 78° | 50° | 64° | — | — |
| 1978 | 75° | 42° | 59° | 1.73" | — |
| 1977 | 77° | 41° | 59° | — | — |
| 1976 | 71° | 34° | 52° | — | — |
| 1975 | 77° | 48° | 63° | — | — |
| 1974 | 69° | 52° | 60° | — | — |
| 1973 | 81° | 45° | 63° | — | — |
| 1972 | 81° | 43° | 62° | — | — |
| 1971 | 65° | 40° | 52° | — | — |
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.