S
M
T
W
T
F
S
26
70°
51°
27
65°
39°
28
57°
37°
29
56°
36°
30
53°
36°
1
54°
35°
2
60°
41°
3
59°
41°
4
62°
46°
5
62°
45°
6
61°
44°
7
64°
41°
8
56°
37°
9
56°
36°
10
58°
45°
11
59°
47°
12
62°
42°
13
58°
39°
14
58°
40°
15
60°
42°
16
60°
40°
17
64°
45°
18
61°
40°
19
61°
41°
20
62°
42°
21
64°
49°
22
69°
45°
23
63°
44°
24
63°
43°
25
64°
43°
26
64°
46°
27
65°
45°
28
66°
49°
29
67°
53°
30
66°
49°
31
70°
50°
1
74°
53°
2
76°
56°
3
76°
56°
4
74°
53°
5
79°
56°
6
72°
58°
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 53° to 79°, with overnight lows between 35° and 58°. The average high for May is 64° 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 Johnsburg. See also: June | July | August.
