S
M
T
W
T
F
S
26
69°
40°
27
73°
38°
28
64°
46°
29
56°
41°
30
56°
36°
1
51°
32°
2
56°
30°
3
66°
33°
4
78°
47°
5
65°
43°
6
57°
36°
7
58°
37°
8
67°
33°
9
69°
42°
10
61°
34°
11
61°
37°
12
62°
29°
13
57°
45°
14
70°
45°
15
74°
41°
16
83°
50°
17
83°
53°
18
91°
51°
19
84°
64°
20
66°
45°
21
63°
39°
22
70°
37°
23
59°
50°
24
61°
50°
25
82°
53°
26
85°
56°
27
79°
50°
28
69°
45°
29
78°
48°
30
67°
42°
31
72°
49°
1
74°
49°
2
75°
48°
3
74°
51°
4
75°
54°
5
78°
57°
6
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Frankenmuth
Frankenmuth's May 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 42° and 60°. The average high for May is 75° with an average low of 51°. 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 Frankenmuth. See also: June | July | August.