S
M
T
W
T
F
S
26
91°
69°
27
90°
68°
28
91°
67°
29
89°
68°
30
92°
67°
31
84°
67°
1
83°
66°
2
84°
67°
3
89°
65°
4
84°
67°
5
91°
68°
6
93°
70°
7
94°
69°
8
93°
68°
9
90°
68°
10
90°
67°
11
91°
68°
12
90°
67°
13
91°
68°
14
92°
63°
15
90°
58°
16
86°
58°
17
85°
57°
18
83°
56°
19
84°
55°
20
82°
55°
21
81°
57°
22
83°
55°
23
87°
62°
24
89°
63°
25
91°
62°
26
92°
63°
27
92°
63°
28
91°
60°
29
92°
57°
30
84°
55°
31
84°
54°
1
85°
51°
2
80°
55°
3
81°
59°
4
89°
59°
5
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arapahoe
Arapahoe's August 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 51° and 70°. The average high for August is 88° with an average low of 62°. 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 Arapahoe. See also: September | October | November.