S
M
T
W
T
F
S
26
87°
67°
27
87°
67°
28
86°
66°
29
84°
66°
30
80°
65°
31
80°
66°
1
79°
65°
2
80°
63°
3
80°
66°
4
81°
60°
5
80°
60°
6
79°
59°
7
79°
59°
8
80°
66°
9
78°
65°
10
80°
63°
11
80°
64°
12
81°
63°
13
80°
64°
14
82°
65°
15
81°
65°
16
78°
64°
17
79°
63°
18
78°
61°
19
80°
60°
20
81°
63°
21
78°
55°
22
76°
55°
23
78°
58°
24
77°
57°
25
78°
56°
26
82°
59°
27
85°
60°
28
86°
64°
29
87°
62°
30
85°
56°
31
77°
56°
1
78°
62°
2
83°
56°
3
83°
62°
4
82°
63°
5
85°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Napoleon
Napoleon's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 55° and 67°. The average high for August is 81° 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 Napoleon. See also: September | October | November.