S
M
T
W
T
F
S
26
84°
63°
27
91°
64°
28
73°
55°
29
69°
50°
30
70°
50°
1
70°
49°
2
75°
47°
3
85°
54°
4
83°
63°
5
77°
51°
6
67°
48°
7
76°
43°
8
85°
51°
9
87°
54°
10
64°
54°
11
80°
48°
12
84°
55°
13
88°
59°
14
90°
66°
15
92°
73°
16
89°
67°
17
90°
72°
18
92°
77°
19
81°
56°
20
67°
56°
21
69°
60°
22
82°
62°
23
80°
64°
24
86°
60°
25
88°
62°
26
86°
67°
27
81°
64°
28
82°
64°
29
82°
66°
30
85°
66°
31
88°
66°
1
87°
65°
2
85°
63°
3
81°
63°
4
79°
64°
5
82°
65°
6
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tecumseh
Tecumseh's May 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 63° and 68°. The average high for May is 83° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Tecumseh. See also: June | July | August.
