S
M
T
W
T
F
S
26
86°
55°
27
84°
56°
28
85°
59°
29
89°
60°
30
90°
59°
31
88°
56°
1
82°
57°
2
84°
56°
3
83°
59°
4
87°
58°
5
83°
57°
6
84°
54°
7
81°
55°
8
82°
55°
9
83°
59°
10
87°
60°
11
89°
59°
12
88°
60°
13
89°
59°
14
88°
56°
15
82°
53°
16
80°
53°
17
81°
56°
18
85°
59°
19
86°
54°
20
82°
53°
21
80°
58°
22
82°
56°
23
85°
57°
24
83°
54°
25
80°
56°
26
83°
56°
27
80°
52°
28
79°
54°
29
81°
55°
30
84°
51°
31
79°
50°
1
78°
51°
2
79°
52°
3
82°
56°
4
81°
53°
5
85°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Collins
Fort Collins's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 50° and 60°. The average high for August is 84° with an average low of 56°. 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.
