S
M
T
W
T
F
S
26
87°
63°
27
82°
58°
28
85°
60°
29
88°
60°
30
84°
56°
31
82°
56°
1
83°
58°
2
88°
59°
3
87°
61°
4
91°
56°
5
90°
61°
6
91°
63°
7
92°
60°
8
91°
59°
9
90°
59°
10
89°
56°
11
84°
54°
12
80°
54°
13
80°
53°
14
81°
54°
15
79°
52°
16
82°
52°
17
81°
53°
18
80°
53°
19
81°
55°
20
82°
56°
21
87°
55°
22
83°
53°
23
81°
53°
24
81°
54°
25
82°
51°
26
80°
50°
27
79°
51°
28
80°
52°
29
83°
52°
30
79°
53°
31
83°
56°
1
84°
56°
2
85°
53°
3
79°
51°
4
77°
48°
5
76°
50°
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 76° to 92°, with overnight lows between 48° and 63°. The average high for August is 84° with an average low of 55°. 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.
