S
M
T
W
T
F
S
26
104°
70°
27
93°
75°
28
95°
65°
29
90°
63°
30
96°
65°
31
92°
64°
1
97°
60°
2
105°
59°
3
101°
62°
4
75°
54°
5
83°
50°
6
101°
55°
7
96°
57°
8
102°
61°
9
99°
62°
10
96°
65°
11
96°
65°
12
93°
61°
13
79°
60°
14
80°
60°
15
83°
58°
16
83°
59°
17
85°
58°
18
87°
57°
19
85°
57°
20
83°
57°
21
85°
59°
22
85°
60°
23
88°
58°
24
85°
59°
25
85°
59°
26
86°
58°
27
85°
58°
28
80°
57°
29
83°
58°
30
79°
57°
31
81°
55°
1
79°
54°
2
81°
56°
3
82°
56°
4
75°
51°
5
76°
51°
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 75° to 96°, with overnight lows between 51° and 65°. The average high for August is 84° 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.
