Fort Collins, CO 14-Day Forecast
Colorado, United States 🇺🇸
76°
Sunny right now
Today: high 76°, low 55°
Updated 17 min ago
Fort Collins weather for the next 14 days
Wednesday, September 16
Overcast High 84° Low 56°Precipitation
11%
· 0.0 in
Max wind
8 mph
Humidity
47%
UV index
6 - Moderate
Sunrise / sunset
06:42 AM / 07:08 PM
Thursday, September 17
Overcast High 76° Low 65°Precipitation
14%
· 0.0 in
Max wind
8 mph
Humidity
49%
UV index
4 - Moderate
Sunrise / sunset
06:43 AM / 07:06 PM
Friday, September 18
Overcast High 87° Low 62°Precipitation
66%
· 0.13 in
Max wind
15 mph
Humidity
60%
UV index
7 - High
Sunrise / sunset
06:44 AM / 07:04 PM
Saturday, September 19
Sunny High 82° Low 58°Precipitation
57%
· 0.1 in
Max wind
18 mph
Humidity
63%
UV index
7 - High
Sunrise / sunset
06:45 AM / 07:03 PM
Sunday, September 20
Sunny High 77° Low 56°Precipitation
5%
· 0.0 in
Max wind
7 mph
Humidity
45%
UV index
6 - High
Sunrise / sunset
06:46 AM / 07:01 PM
Monday, September 21
Sunny High 79° Low 56°Precipitation
59%
· 0.33 in
Max wind
8 mph
Humidity
38%
UV index
7 - High
Sunrise / sunset
06:47 AM / 06:59 PM
Tuesday, September 22
Partly Cloudy High 82° Low 57°Precipitation
36%
· 0.03 in
Max wind
9 mph
Humidity
39%
UV index
7 - High
Sunrise / sunset
06:48 AM / 06:58 PM
Wednesday, September 23
Sunny High 73° Low 52°Precipitation
1%
· 0.0 in
Max wind
24 mph
Humidity
34%
UV index
6 - High
Sunrise / sunset
06:48 AM / 06:56 PM
Thursday, September 24
Sunny High 81° Low 47°Precipitation
0%
· 0.0 in
Max wind
8 mph
Humidity
29%
UV index
7 - High
Sunrise / sunset
06:49 AM / 06:54 PM
Friday, September 25
Sunny High 87° Low 58°Precipitation
1%
· 0.0 in
Max wind
15 mph
Humidity
20%
UV index
7 - High
Sunrise / sunset
06:50 AM / 06:53 PM
Saturday, September 26
Overcast High 56° Low 48°Precipitation
16%
· 0.0 in
Max wind
12 mph
Humidity
64%
UV index
3 - Moderate
Sunrise / sunset
06:51 AM / 06:51 PM
Sunday, September 27
Sunny High 69° Low 49°Precipitation
6%
· 0.0 in
Max wind
13 mph
Humidity
58%
UV index
6 - High
Sunrise / sunset
06:52 AM / 06:49 PM
Monday, September 28
Sunny High 87° Low 49°Precipitation
3%
· 0.0 in
Max wind
18 mph
Humidity
39%
UV index
7 - High
Sunrise / sunset
06:53 AM / 06:48 PM
Fort Collins 14-day outlook: the story
The warmest day of Fort Collins's 14-day outlook is Friday, September 25 with a high near 87°F (30°C); the coolest night comes Thursday, September 24, dipping to 47°F (8°C). The trend points cooler: week two runs about 4°F below week one. Highs over the next two weeks average 80°F (27°C), right in line with the typical September high of 80°F (27°C).
Precipitation is most likely on Friday 18, Saturday 19, Monday 21; the wettest day looks like Monday, September 21 with about 0.33 in (8.4 mm) expected. For the weekend, expect Saturday 82°F (28°C) and sunny / Sunday 77°F (25°C) and sunny.
For typical conditions month by month, see the Fort Collins climate & average temperatures guide.
Fort Collins forecast questions
Will it rain in Fort Collins this week?
The forecast currently shows meaningful precipitation chances on 3 of the next 14 days, peaking around Monday, September 21.
What will be the warmest day in Fort Collins over the next 14 days?
Friday, September 25, with a forecast high near 87°F (30°C).
How accurate is a 14-day forecast for Fort Collins?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Fort Collins by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 38° | 16° | 4 | 0.6 in | 7.9 h/day | 63% |
| February | 41° | 17° | 5 | 0.9 in | 8.9 h/day | 59% |
| March | 51° | 25° | 6 | 1.6 in | 9.8 h/day | 58% |
| April | 60° | 33° | 8 | 1.9 in | 10.6 h/day | 52% |
| May | 67° | 43° | 13 | 4.1 in | 11.1 h/day | 62% |
| June | 81° | 55° | 8 | 1.8 in | 12.8 h/day | 54% |
| July | 87° | 61° | 6 | 1.3 in | 12.9 h/day | 51% |
| August | 85° | 59° | 6 | 1.0 in | 12.2 h/day | 51% |
| September | 80° | 53° | 4 | 0.7 in | 11.0 h/day | 47% |
| October | 64° | 39° | 5 | 0.9 in | 9.4 h/day | 53% |
| November | 50° | 28° | 5 | 0.8 in | 8.5 h/day | 59% |
| December | 40° | 20° | 4 | 0.6 in | 7.6 h/day | 59% |
14-day forecasts nearby