S
M
T
W
T
F
S
26
90°
61°
27
85°
61°
28
84°
63°
29
84°
65°
30
87°
62°
31
85°
65°
1
88°
63°
2
84°
65°
3
83°
62°
4
81°
64°
5
81°
64°
6
Hist. Avg.
86°
65°
7
Hist. Avg.
86°
65°
8
Hist. Avg.
86°
64°
9
Hist. Avg.
86°
64°
10
Hist. Avg.
86°
64°
11
Hist. Avg.
86°
64°
12
Hist. Avg.
86°
64°
13
Hist. Avg.
86°
64°
14
Hist. Avg.
85°
64°
15
Hist. Avg.
85°
64°
16
Hist. Avg.
85°
63°
17
Hist. Avg.
85°
63°
18
Hist. Avg.
85°
63°
19
Hist. Avg.
85°
63°
20
Hist. Avg.
85°
63°
21
Hist. Avg.
85°
62°
22
Hist. Avg.
84°
62°
23
Hist. Avg.
84°
62°
24
Hist. Avg.
84°
62°
25
Hist. Avg.
84°
62°
26
Hist. Avg.
84°
61°
27
Hist. Avg.
84°
61°
28
Hist. Avg.
84°
61°
29
Hist. Avg.
83°
60°
30
Hist. Avg.
83°
60°
31
Hist. Avg.
83°
60°
1
Hist. Avg.
83°
60°
2
Hist. Avg.
82°
59°
3
Hist. Avg.
82°
59°
4
Hist. Avg.
82°
58°
5
Hist. Avg.
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Tecumseh
Tecumseh's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 61° and 65°. The average high for August is 85° with an average low of 63°. 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 Tecumseh. See also: September | October | November.