Fort Collins Weather in May
Average highs run from 65°F on May 1 to 77°F on May 31, and lows from 39°F to 49°F. Normal precipitation for the month is 2.72 in over about 12 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 71°F
- Average low
- 44°F
- Precipitation
- 2.72 in
- Snowfall
- 1.6 in
- Record high
- 98°FMay 29, 2000
- Record low
- 10°FMay 2, 2013
- Chance of a freeze
- 57%
- Daylight
- 13 h 57 min to 14 h 52 min
- Cloud cover
- 61%
- Humidity
- 51%
- Dew point
- 35°F
- Wind
- 7.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 65°F | 39°F | 84°F 2007 | 22°F 2005 | 34% | 7% |
| May 2 | 66°F | 40°F | 87°F 2021 | 10°F 2013 | 34% | 6% |
| May 3 | 66°F | 40°F | 82°F 2000 | 10°F 2013 | 35% | 6% |
| May 4 | 66°F | 40°F | 91°F 2000 | 18°F 2008 | 35% | 6% |
| May 5 | 67°F | 41°F | 91°F 2000 | 30°F 2013 | 35% | 5% |
| May 6 | 67°F | 41°F | 91°F 2004 | 30°F 2013 | 36% | 5% |
| May 7 | 67°F | 41°F | 90°F 2004 | 29°F 2010 | 36% | 5% |
| May 8 | 68°F | 42°F | 89°F 2022 | 26°F 2010 | 36% | 5% |
| May 9 | 68°F | 42°F | 86°F 2011 | 26°F 2010 | 37% | 4% |
| May 10 | 69°F | 42°F | 87°F 1991 | 28°F 1990 | 37% | 4% |
| May 11 | 69°F | 43°F | 88°F 2018 | 27°F 2008 | 37% | 4% |
| May 12 | 69°F | 43°F | 90°F 2022 | 29°F 2008 | 37% | 4% |
| May 13 | 70°F | 43°F | 89°F 2025 | 26°F 2000 | 37% | 3% |
| May 14 | 70°F | 44°F | 92°F 2026 | 27°F 2014 | 38% | 3% |
| May 15 | 70°F | 44°F | 90°F 2026 | 30°F 2014 | 38% | 3% |
| May 16 | 71°F | 44°F | 93°F 1996 | 34°F 2011 | 38% | 3% |
| May 17 | 71°F | 45°F | 87°F 1994 | 32°F 1990 | 38% | 3% |
| May 18 | 72°F | 45°F | 90°F 1996 | 35°F 1995 | 38% | 2% |
| May 19 | 72°F | 45°F | 89°F 2006 | 32°F 2017 | 38% | 2% |
| May 20 | 72°F | 46°F | 91°F 2006 | 31°F 2017 | 38% | 2% |
| May 21 | 73°F | 46°F | 93°F 2005 | 31°F 2017 | 38% | 2% |
| May 22 | 73°F | 46°F | 92°F 2005 | 31°F 2022 | 38% | 2% |
| May 23 | 74°F | 46°F | 93°F 2000 | 32°F 2022 | 38% | 2% |
| May 24 | 74°F | 47°F | 88°F 2005 | 34°F 2019 | 38% | 2% |
| May 25 | 74°F | 47°F | 87°F 2013 | 34°F 2019 | 38% | 1% |
| May 26 | 75°F | 47°F | 89°F 2026 | 36°F 1995 | 38% | 1% |
| May 27 | 75°F | 48°F | 90°F 2018 | 38°F 2020 | 38% | 1% |
| May 28 | 76°F | 48°F | 95°F 2006 | 35°F 2017 | 38% | 1% |
| May 29 | 76°F | 48°F | 98°F 2000 | 36°F 2017 | 38% | 1% |
| May 30 | 76°F | 49°F | 92°F 1994 | 35°F 2019 | 38% | 1% |
| May 31 | 77°F | 49°F | 86°F 2018 | 35°F 2019 | 37% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 5:59 AM, sunset 7:56 PM
- May 31
- sunrise 5:32 AM, sunset 8:24 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00053005 (Ft Collins), public domain. Records: NOAA GHCN-Daily, station USC00055236, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.