Climate
Fort Collins weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: June, August, September, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Snow | Wet days |
|---|---|---|---|---|---|
| January | 45°F | 18°F | 0.40 in | 6.7 in | 4 |
| February | 47°F | 21°F | 0.50 in | 7.6 in | 5 |
| March | 56°F | 29°F | 1.3 in | 9.4 in | 6 |
| April | 63°F | 35°F | 2.1 in | 6.2 in | 9 |
| May | 71°F | 44°F | 2.7 in | 1.6 in | 12 |
| June | 82°F | 53°F | 1.9 in | 0.00 in | 9 |
| July | 87°F | 59°F | 1.6 in | 0.00 in | 9 |
| August | 85°F | 57°F | 1.4 in | 0.00 in | 9 |
| September | 77°F | 48°F | 1.4 in | 0.70 in | 7 |
| October | 64°F | 36°F | 1.2 in | 4.1 in | 6 |
| November | 53°F | 26°F | 0.70 in | 7.6 in | 5 |
| December | 44°F | 18°F | 0.50 in | 7.5 in | 4 |
NOAA U.S. Climate Normals 1991–2020, Ft Collins, Co Us (2.3 mi away, 5,004 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in Fort Collins?
July, with an average high of 87°F and low of 59°F.
What is the coldest month in Fort Collins?
January, with an average low of 18°F and high of 45°F.
When does it rain most in Fort Collins?
May is the wettest month, averaging 2.7 in of precipitation; the year totals about 15.7 inches.
Does it snow in Fort Collins?
Yes. Snowfall averages about 51 inches a year, mostly in March and February.
What is the best time to visit Fort Collins?
For mild weather (highs between 65°F and 85°F) with the least rain, June, August, September.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the Ft Collins weather station, 2.3 miles from downtown: 30-year averages, not a forecast.