S
M
T
W
T
F
S
26
67°
34°
27
74°
32°
28
72°
40°
29
69°
37°
30
54°
43°
1
61°
36°
2
56°
36°
3
56°
40°
4
72°
44°
5
80°
41°
6
60°
44°
7
56°
34°
8
53°
31°
9
53°
44°
10
58°
33°
11
55°
34°
12
50°
32°
13
51°
38°
14
54°
39°
15
60°
46°
16
63°
43°
17
60°
41°
18
60°
43°
19
62°
44°
20
64°
43°
21
60°
39°
22
61°
39°
23
62°
40°
24
64°
44°
25
69°
46°
26
70°
47°
27
67°
42°
28
64°
41°
29
64°
41°
30
68°
49°
31
73°
50°
1
72°
48°
2
68°
45°
3
71°
51°
4
74°
52°
5
75°
53°
6
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnsburg
Johnsburg's May 2026 forecast shows daily high temperatures ranging from 50° to 75°, with overnight lows between 31° and 53°. The average high for May is 63° 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 Johnsburg. See also: June | July | August.
