S
M
T
W
T
F
S
26
55°
35°
27
60°
32°
28
62°
39°
29
55°
34°
30
58°
28°
1
69°
35°
2
75°
39°
3
79°
46°
4
74°
46°
5
75°
51°
6
69°
49°
7
62°
47°
8
56°
46°
9
61°
41°
10
67°
37°
11
69°
43°
12
49°
39°
13
57°
39°
14
59°
43°
15
60°
35°
16
57°
43°
17
62°
38°
18
66°
34°
19
68°
41°
20
69°
45°
21
69°
48°
22
74°
47°
23
80°
48°
24
84°
54°
25
80°
56°
26
83°
52°
27
80°
48°
28
72°
43°
29
78°
42°
30
78°
52°
31
78°
50°
1
72°
53°
2
77°
50°
3
68°
51°
4
N/A
5
67°
48°
6
73°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Prague 21
Prague 21's May 2026 forecast shows daily high temperatures ranging from 67° to 73°, with overnight lows between 48° and 55°. The average high for May is 70° 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 Prague 21. See also: June | July | August.
