S
M
T
W
T
F
S
26
77°
49°
27
75°
53°
28
63°
48°
29
61°
40°
30
57°
36°
1
57°
35°
2
62°
34°
3
77°
46°
4
82°
45°
5
59°
39°
6
56°
40°
7
65°
44°
8
66°
43°
9
69°
47°
10
66°
43°
11
69°
48°
12
67°
47°
13
71°
49°
14
69°
48°
15
74°
52°
16
75°
53°
17
72°
50°
18
75°
55°
19
74°
52°
20
72°
53°
21
69°
46°
22
66°
46°
23
67°
47°
24
68°
47°
25
67°
48°
26
68°
48°
27
68°
49°
28
69°
49°
29
70°
56°
30
74°
59°
31
72°
54°
1
73°
54°
2
76°
58°
3
77°
59°
4
79°
60°
5
80°
62°
6
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tiffin
Tiffin's May 2026 forecast shows daily high temperatures ranging from 56° to 82°, with overnight lows between 39° and 62°. The average high for May is 71° with an average low of 50°. 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 Tiffin. See also: June | July | August.
