S
M
T
W
T
F
S
26
64°
39°
27
68°
43°
28
73°
52°
29
68°
48°
30
66°
41°
1
75°
45°
2
81°
48°
3
75°
46°
4
72°
46°
5
70°
57°
6
64°
52°
7
59°
50°
8
66°
46°
9
73°
48°
10
77°
55°
11
59°
43°
12
54°
39°
13
57°
43°
14
57°
45°
15
59°
43°
16
59°
43°
17
64°
39°
18
63°
46°
19
66°
43°
20
68°
54°
21
75°
55°
22
82°
54°
23
88°
59°
24
88°
57°
25
86°
61°
26
89°
60°
27
85°
55°
28
80°
56°
29
87°
65°
30
87°
63°
31
81°
60°
1
76°
60°
2
78°
59°
3
75°
58°
4
74°
58°
5
72°
56°
6
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Frankfurt
Frankfurt's May 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 55° and 65°. The average high for May is 80° with an average low of 59°. 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 Frankfurt. See also: June | July | August.