S
M
T
W
T
F
S
26
72°
43°
27
73°
41°
28
70°
45°
29
63°
45°
30
64°
39°
1
73°
36°
2
81°
41°
3
81°
48°
4
75°
52°
5
72°
50°
6
70°
48°
7
64°
48°
8
N/A
9
66°
43°
10
71°
48°
11
60°
39°
12
51°
34°
13
59°
42°
14
53°
41°
15
53°
40°
16
46°
41°
17
52°
41°
18
58°
43°
19
59°
42°
20
62°
43°
21
62°
44°
22
65°
45°
23
61°
43°
24
61°
45°
25
66°
47°
26
67°
48°
27
67°
49°
28
66°
50°
29
67°
49°
30
67°
49°
31
68°
50°
1
68°
49°
2
67°
48°
3
68°
49°
4
69°
50°
5
68°
50°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Grainau
Grainau's May 2026 forecast shows daily high temperatures ranging from 46° to 71°, with overnight lows between 34° and 52°. The average high for May is 63° with an average low of 45°. 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 Grainau. See also: June | July | August.
