S
M
T
W
T
F
S
26
78°
52°
27
72°
59°
28
73°
61°
29
68°
52°
30
63°
42°
1
61°
42°
2
58°
40°
3
66°
35°
4
78°
54°
5
68°
49°
6
61°
45°
7
63°
41°
8
72°
45°
9
76°
56°
10
74°
57°
11
75°
50°
12
79°
45°
13
76°
55°
14
70°
47°
15
78°
63°
16
79°
64°
17
87°
66°
18
85°
70°
19
79°
64°
20
74°
56°
21
76°
56°
22
79°
56°
23
77°
58°
24
78°
60°
25
79°
63°
26
80°
63°
27
79°
69°
28
80°
62°
29
82°
62°
30
77°
59°
31
75°
57°
1
76°
58°
2
76°
55°
3
77°
57°
4
77°
60°
5
84°
64°
6
85°
65°
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 70° to 87°, with overnight lows between 47° and 70°. The average high for May is 79° with an average low of 61°. 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.
