S
M
T
W
T
F
S
26
64°
36°
27
68°
34°
28
72°
39°
29
68°
36°
30
68°
45°
1
73°
48°
2
77°
52°
3
70°
54°
4
68°
50°
5
63°
52°
6
52°
46°
7
61°
45°
8
66°
45°
9
72°
41°
10
72°
45°
11
55°
43°
12
54°
39°
13
55°
45°
14
57°
43°
15
57°
39°
16
59°
41°
17
59°
43°
18
61°
46°
19
61°
39°
20
65°
52°
21
73°
50°
22
79°
55°
23
83°
58°
24
83°
56°
25
82°
57°
26
81°
53°
27
75°
52°
28
74°
54°
29
78°
56°
30
68°
51°
31
68°
50°
1
67°
51°
2
63°
47°
3
63°
47°
4
64°
48°
5
64°
49°
6
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hennef
Hennef's May 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 47° and 58°. The average high for May is 72° with an average low of 52°. 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 Hennef. See also: June | July | August.
