Fort Collins weather in May
In May, Fort Collins sees average daytime highs of 69°F and overnight lows near 43°F, with 3.4 in of precipitation across 11.6 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 64°F in the first days to 73°F by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Fort Collins's 12th-clearest and 3rd-windiest month. For the whole year in context, see Fort Collins's year-round climate.
- Daytime high
- 69°
- 5th warmest
- Overnight low
- 43°
- 8th coldest
- Precipitation
- 3.4 in
- 11.6 wet days
- Daylight
- 14 h 18 min
- 4:49 AM – 7:04 PM
- Cloud cover
- 62%
- 12th clearest
- Wind
- 5 mph
- 3rd windiest
- Solar energy
- 6.68 kWh/m²
- Travel score
- 6.1
- out of 10
Fort Collins is city and county seat of Larimer County, Colorado, United States.
- Density
- 1,188/km²
- people per km²
- Founded
- 1864
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 64°F in the first days to 73°F by the end.
A typical May day in Fort Collins reaches about 69°F in the afternoon and slips back to 43°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 82°F. Set against its neighbours, May runs about 9°F warmer than April and about 11°F cooler than June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 64 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 67 | 67 | 67 | 68 | 68 | 68 | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 71 | 71 | 71 | 71 | 72 | 72 | 73 | 73 | 73 | 74 |
| Avg low (°F) | 38 | 38 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 41 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 48 | 48 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 64 | 38 |
| 2 | 64 | 38 |
| 3 | 64 | 39 |
| 4 | 65 | 39 |
| 5 | 65 | 40 |
| 6 | 65 | 40 |
| 7 | 66 | 40 |
| 8 | 66 | 41 |
| 9 | 67 | 41 |
| 10 | 67 | 41 |
| 11 | 67 | 42 |
| 12 | 68 | 42 |
| 13 | 68 | 42 |
| 14 | 68 | 43 |
| 15 | 69 | 43 |
| 16 | 69 | 43 |
| 17 | 69 | 44 |
| 18 | 69 | 44 |
| 19 | 70 | 44 |
| 20 | 70 | 45 |
| 21 | 70 | 45 |
| 22 | 71 | 45 |
| 23 | 71 | 46 |
| 24 | 71 | 46 |
| 25 | 71 | 46 |
| 26 | 72 | 47 |
| 27 | 72 | 47 |
| 28 | 73 | 47 |
| 29 | 73 | 47 |
| 30 | 73 | 48 |
| 31 | 74 | 48 |
How May really feels in Fort Collins
Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Fort Collins weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 41° / 19° | 0.6 | 4 | 4.2 | 9.4 | 0.1 |
| Feb | 44° / 20° | 0.7 | 4.9 | 4.6 | 10.4 | 0.9 |
| Mar | 53° / 27° | 1.5 | 6.9 | 4.3 | 11.7 | 3.4 |
| Apr | 60° / 34° | 2.5 | 9.6 | 3.7 | 13 | 4.9 |
| May | 69° / 43° | 3.4 | 11.6 | 0.7 | 14.2 | 6.1 |
| Jun | 79° / 52° | 2.1 | 8.7 | 0 | 14.8 | 6.7 |
| Jul | 86° / 58° | 1.7 | 7.7 | 0 | 14.6 | 5.5 |
| Aug | 84° / 57° | 1.5 | 6.7 | 0 | 13.6 | 6.2 |
| Sep | 76° / 49° | 1.5 | 5.8 | 0.3 | 12.3 | 7.6 |
| Oct | 63° / 37° | 1.6 | 6.9 | 2 | 10.9 | 6.0 |
| Nov | 50° / 27° | 1.0 | 5.3 | 4.2 | 9.7 | 2.6 |
| Dec | 41° / 20° | 0.6 | 3.8 | 4 | 9.2 | 0.2 |
Cloud cover in May
The sky is clear or mostly clear about 23% of the time in May, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 53%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 47 | 47 | 47 | 48 | 47 | 47 | 49 | 49 | 50 | 49 | 48 | 47 | 47 | 47 | 47 | 47 | 47 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 46 | 46 | 48 | 48 | 49 | 50 | 51 |
| Cloudier (%) | 53 | 53 | 53 | 52 | 53 | 53 | 51 | 51 | 50 | 51 | 52 | 53 | 53 | 53 | 53 | 53 | 53 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 54 | 54 | 52 | 52 | 51 | 50 | 49 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 47 | 53 |
| 2 | 47 | 53 |
| 3 | 47 | 53 |
| 4 | 48 | 52 |
| 5 | 47 | 53 |
| 6 | 47 | 53 |
| 7 | 49 | 51 |
| 8 | 49 | 51 |
| 9 | 50 | 50 |
| 10 | 49 | 51 |
| 11 | 48 | 52 |
| 12 | 47 | 53 |
| 13 | 47 | 53 |
| 14 | 47 | 53 |
| 15 | 47 | 53 |
| 16 | 47 | 53 |
| 17 | 47 | 53 |
| 18 | 45 | 55 |
| 19 | 45 | 55 |
| 20 | 45 | 55 |
| 21 | 45 | 55 |
| 22 | 45 | 55 |
| 23 | 45 | 55 |
| 24 | 45 | 55 |
| 25 | 46 | 54 |
| 26 | 46 | 54 |
| 27 | 48 | 52 |
| 28 | 48 | 52 |
| 29 | 49 | 51 |
| 30 | 50 | 50 |
| 31 | 51 | 49 |
Chance of precipitation in May
Fort Collins gets around 3.4 in of rain and snow over 11.6 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 37% and peaks near 41% on the wettest days, and about 1 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 36 | 36 | 37 | 38 | 39 | 39 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 40 |
| Snow chance (%) | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 37 | 7 |
| 2 | 37 | 7 |
| 3 | 36 | 7 |
| 4 | 36 | 6 |
| 5 | 36 | 6 |
| 6 | 35 | 5 |
| 7 | 35 | 5 |
| 8 | 35 | 4 |
| 9 | 34 | 4 |
| 10 | 34 | 4 |
| 11 | 34 | 3 |
| 12 | 34 | 3 |
| 13 | 34 | 3 |
| 14 | 34 | 3 |
| 15 | 35 | 3 |
| 16 | 35 | 3 |
| 17 | 36 | 2 |
| 18 | 36 | 2 |
| 19 | 37 | 2 |
| 20 | 38 | 2 |
| 21 | 39 | 1 |
| 22 | 39 | 1 |
| 23 | 40 | 1 |
| 24 | 41 | 1 |
| 25 | 41 | 1 |
| 26 | 41 | 1 |
| 27 | 41 | 1 |
| 28 | 41 | 0 |
| 29 | 41 | 0 |
| 30 | 41 | 0 |
| 31 | 40 | 0 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 98 | 98 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 100 | 0 |
| 2 | 100 | 0 |
| 3 | 100 | 0 |
| 4 | 100 | 0 |
| 5 | 100 | 0 |
| 6 | 100 | 0 |
| 7 | 100 | 0 |
| 8 | 100 | 0 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 100 | 0 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 99 | 1 |
| 26 | 99 | 1 |
| 27 | 99 | 1 |
| 28 | 99 | 1 |
| 29 | 99 | 1 |
| 30 | 98 | 2 |
| 31 | 98 | 2 |
Wind in May
Winds average 5 mph in May.
Across May, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in May
Daylight runs from about 13 h 42 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 60 minutes over May. Sunrise moves from 5:06 AM to 4:38 AM, and sunset from 6:49 PM to 7:17 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.7 | 13.7 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.0 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.6 | 14.7 |
| Sunrise (AM) | 5:06 | 5:05 | 5:04 | 5:02 | 5:01 | 5:00 | 4:59 | 4:58 | 4:56 | 4:55 | 4:54 | 4:53 | 4:52 | 4:51 | 4:50 | 4:49 | 4:48 | 4:47 | 4:46 | 4:45 | 4:45 | 4:44 | 4:43 | 4:42 | 4:42 | 4:41 | 4:40 | 4:40 | 4:39 | 4:39 | 4:38 |
| Sunset (PM) | 6:49 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:11 | 7:12 | 7:12 | 7:13 | 7:14 | 7:15 | 7:16 | 7:17 | 7:17 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.7 | 5:06 | 6:49 |
| 2 | 13.7 | 5:05 | 6:50 |
| 3 | 13.8 | 5:04 | 6:51 |
| 4 | 13.8 | 5:02 | 6:52 |
| 5 | 13.9 | 5:01 | 6:53 |
| 6 | 13.9 | 5:00 | 6:54 |
| 7 | 13.9 | 4:59 | 6:55 |
| 8 | 14.0 | 4:58 | 6:56 |
| 9 | 14.0 | 4:56 | 6:57 |
| 10 | 14.0 | 4:55 | 6:58 |
| 11 | 14.1 | 4:54 | 6:59 |
| 12 | 14.1 | 4:53 | 7:00 |
| 13 | 14.2 | 4:52 | 7:01 |
| 14 | 14.2 | 4:51 | 7:02 |
| 15 | 14.2 | 4:50 | 7:03 |
| 16 | 14.3 | 4:49 | 7:04 |
| 17 | 14.3 | 4:48 | 7:05 |
| 18 | 14.3 | 4:47 | 7:06 |
| 19 | 14.3 | 4:46 | 7:07 |
| 20 | 14.4 | 4:45 | 7:08 |
| 21 | 14.4 | 4:45 | 7:09 |
| 22 | 14.4 | 4:44 | 7:10 |
| 23 | 14.5 | 4:43 | 7:11 |
| 24 | 14.5 | 4:42 | 7:12 |
| 25 | 14.5 | 4:42 | 7:12 |
| 26 | 14.5 | 4:41 | 7:13 |
| 27 | 14.6 | 4:40 | 7:14 |
| 28 | 14.6 | 4:40 | 7:15 |
| 29 | 14.6 | 4:39 | 7:16 |
| 30 | 14.6 | 4:39 | 7:17 |
| 31 | 14.7 | 4:38 | 7:17 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.68 kWh/m².
For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 7.32 kWh/m² in June across the year — May's 6.68 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.9 | 6.9 | 6.9 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.4 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.6 | Intense |
| 7 | 6.6 | Intense |
| 8 | 6.6 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.6 | Intense |
| 11 | 6.6 | Intense |
| 12 | 6.7 | Intense |
| 13 | 6.7 | Intense |
| 14 | 6.7 | Intense |
| 15 | 6.7 | Intense |
| 16 | 6.7 | Intense |
| 17 | 6.7 | Intense |
| 18 | 6.7 | Intense |
| 19 | 6.7 | Intense |
| 20 | 6.7 | Intense |
| 21 | 6.7 | Intense |
| 22 | 6.7 | Intense |
| 23 | 6.7 | Intense |
| 24 | 6.8 | Intense |
| 25 | 6.8 | Intense |
| 26 | 6.8 | Intense |
| 27 | 6.8 | Intense |
| 28 | 6.8 | Intense |
| 29 | 6.9 | Intense |
| 30 | 6.9 | Intense |
| 31 | 6.9 | Intense |
Is May a good time to visit Fort Collins?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Fort Collins for sightseeing.
What to pack for Fort Collins in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Fort Collins sees daytime highs around 69°F and nights near 43°F. Pack sun protection. Worth having: a warm layer and rain gear. About 12 days see rain.
UV index in Fort Collins in May
Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Fort Collins peaks around July 13 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 6 | 6 | 8 | 10 | 11 | 10 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | High | High | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Fort Collins in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Fort Collins is worst in October — around 30 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 12 | 14 | 11 | 11 | 12 | 14 | 19 | 17 | 30 | 10 | 11 |
| Level | Good | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 12 | Moderate |
| Mar | 14 | Moderate |
| Apr | 11 | Good |
| May | 11 | Good |
| Jun | 12 | Good |
| Jul | 14 | Moderate |
| Aug | 19 | Moderate |
| Sep | 17 | Moderate |
| Oct | 30 | Moderate |
| Nov | 10 | Good |
| Dec | 11 | Good |
Where is Fort Collins?
Fort Collins sits at 40.6°N, 105.1°W, 5,003 ft above sea level, in United States. The nearest listed city is Windsor, 12 mi away.
Topography around Fort Collins
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fort Collins.
Within 2 miles, the terrain around Fort Collins has only modest variations in elevation — a maximum elevation change of 187 ft around an average of 5,003 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,923 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,675 ft.
The land around Fort Collins is covered by artificial surfaces (41%), trees (32%) and grassland (22%) within 2 miles, grassland (57%) within 10 miles, and grassland (57%) and trees (24%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Fort Collins (40.5853°, -105.0844°, elevation 5,003 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).