S
M
T
W
T
F
S
26
85°
57°
27
82°
58°
28
85°
59°
29
86°
56°
30
84°
60°
31
90°
61°
1
92°
60°
2
90°
61°
3
87°
59°
4
83°
61°
5
86°
60°
6
86°
58°
7
84°
55°
8
83°
55°
9
84°
58°
10
86°
57°
11
86°
58°
12
84°
61°
13
88°
59°
14
87°
57°
15
89°
59°
16
88°
54°
17
82°
56°
18
87°
57°
19
88°
59°
20
79°
50°
21
78°
52°
22
Hist. Avg.
86°
52°
23
Hist. Avg.
86°
52°
24
Hist. Avg.
86°
51°
25
Hist. Avg.
86°
51°
26
Hist. Avg.
85°
51°
27
Hist. Avg.
85°
50°
28
Hist. Avg.
85°
50°
29
Hist. Avg.
85°
50°
30
Hist. Avg.
84°
50°
31
Hist. Avg.
84°
49°
1
Hist. Avg.
84°
49°
2
Hist. Avg.
84°
49°
3
Hist. Avg.
84°
48°
4
Hist. Avg.
83°
48°
5
Hist. Avg.
83°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Fort Collins
Fort Collins's August 2026 forecast shows daily high temperatures ranging from 78° to 92°, with overnight lows between 50° and 61°. The average high for August is 86° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fort Collins. See also: September | October | November.
