S
M
T
W
T
F
S
26
53°
35°
27
51°
34°
28
52°
34°
29
52°
33°
30
53°
34°
1
53°
36°
2
54°
38°
3
55°
36°
4
55°
35°
5
57°
36°
6
64°
40°
7
61°
39°
8
66°
43°
9
66°
43°
10
64°
40°
11
67°
46°
12
67°
45°
13
64°
41°
14
67°
44°
15
68°
46°
16
67°
47°
17
62°
44°
18
66°
42°
19
63°
42°
20
64°
44°
21
64°
45°
22
65°
48°
23
64°
50°
24
64°
49°
25
69°
50°
26
72°
50°
27
73°
52°
28
73°
49°
29
72°
50°
30
68°
43°
31
67°
52°
1
72°
51°
2
74°
46°
3
66°
43°
4
66°
44°
5
71°
43°
6
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hallstatt
Hallstatt's May 2026 forecast shows daily high temperatures ranging from 51° to 74°, with overnight lows between 33° and 52°. The average high for May is 64° with an average low of 43°. 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 Hallstatt. See also: June | July | August.