Fort Collins weather by month
Average highs run from 45°F in January to 87°F in July, and January nights average 18°F. It gets 16 inches of rain and melted snow a year and 51 inches of snow. Nights drop below freezing about 150 times a year. The most comfortable months are May to June and August to September.
Best time to visit Fort Collins
For comfortable weather, go in May to June and August to September. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 45°F | 18°F | 0.4 in | 6.7 in | 2 | 0 | 29 | cold |
| February | 47°F | 21°F | 0.5 in | 7.6 in | 2 | 0 | 26 | cold |
| March | 56°F | 29°F | 1.3 in | 9.4 in | 3 | 0 | 22 | cool |
| April | 63°F | 35°F | 2.1 in | 6.2 in | 5 | 0 | 9 | mild days, chilly nights |
| May | 71°F | 44°F | 2.7 in | 1.6 in | 6 | 0 | 1 | mild |
| June | 82°F | 53°F | 1.9 in | 0.0 in | 4 | 6 | 0 | warm |
| July | 87°F | 59°F | 1.6 in | 0.0 in | 4 | 13 | 0 | hot |
| August | 85°F | 57°F | 1.5 in | 0.0 in | 3 | 8 | 0 | warm |
| September | 77°F | 48°F | 1.4 in | 0.7 in | 3 | 2 | 1 | warm |
| October | 64°F | 36°F | 1.3 in | 4.1 in | 3 | 0 | 9 | mild days, chilly nights |
| November | 53°F | 26°F | 0.7 in | 7.6 in | 2 | 0 | 24 | cool |
| December | 44°F | 18°F | 0.5 in | 7.5 in | 2 | 0 | 30 | cold |
| Year | 65°F avg | 37°F avg | 15.9 in | 51.4 in | 37 | 29 | 150 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Fort Collins, CO (USC00053005), 0.6 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Fort Collins
The shortest day is December 21, with 9h 16m of daylight; the longest is June 21, with 15h 04m. The earliest sunset comes around December 5 (4:32 pm) and the latest around June 20 (8:34 pm). The sun sets after 8 pm on 101 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:22 am | 4:57 pm | 9h 36m |
| February | 6:54 am | 5:35 pm | 10h 41m |
| March | 7:11 am | 7:07 pm | 11h 55m |
| April | 6:21 am | 7:39 pm | 13h 18m |
| May | 5:43 am | 8:10 pm | 14h 27m |
| June | 5:29 am | 8:32 pm | 15h 03m |
| July | 5:42 am | 8:29 pm | 14h 47m |
| August | 6:11 am | 7:57 pm | 13h 46m |
| September | 6:41 am | 7:08 pm | 12h 27m |
| October | 7:11 am | 6:19 pm | 11h 08m |
| November | 6:47 am | 4:42 pm | 9h 55m |
| December | 7:17 am | 4:33 pm | 9h 17m |
Calculated for 2026 at the center of Fort Collins with NOAA's solar equations, in local clock time (Mountain Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Fort Collins getting warmer?
The last 10 years averaged 2.5°F warmer than the 20th century. See the climate stripes for Fort Collins.Frequently asked questions
What is the warmest month in Fort Collins?
July is the warmest month, with an average high of 87°F and an average low of 59°F (NOAA 1991-2020 normals).
What is the coldest month in Fort Collins?
January is the coldest, with average lows of 18°F and highs of 45°F.
What is the rainiest month in Fort Collins?
May gets the most precipitation, 2.7 inches on average. January is the driest at 0.4 inches.
Does it snow in Fort Collins?
Yes. Fort Collins averages 51 inches of snow a year.
When is the best time to visit Fort Collins?
For comfortable weather, May to June and August to September. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Fort Collins?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Fort Collins profile.
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