S
M
T
W
T
F
S
26
91°
59°
27
92°
58°
28
86°
56°
29
82°
54°
30
81°
56°
31
83°
57°
1
84°
59°
2
88°
62°
3
90°
60°
4
85°
60°
5
86°
57°
6
86°
58°
7
87°
60°
8
90°
59°
9
89°
57°
10
83°
59°
11
88°
60°
12
85°
59°
13
83°
61°
14
88°
57°
15
81°
59°
16
87°
57°
17
85°
58°
18
84°
60°
19
85°
58°
20
86°
59°
21
85°
56°
22
85°
57°
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 81° to 92°, with overnight lows between 54° and 62°. 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.
