S
M
T
W
T
F
S
26
57°
43°
27
73°
43°
28
59°
52°
29
61°
54°
30
70°
46°
1
70°
41°
2
61°
46°
3
66°
39°
4
79°
46°
5
86°
59°
6
72°
55°
7
72°
54°
8
72°
45°
9
70°
55°
10
81°
52°
11
66°
52°
12
73°
45°
13
75°
55°
14
58°
47°
15
73°
48°
16
83°
62°
17
85°
63°
18
95°
68°
19
100°
64°
20
91°
59°
21
71°
47°
22
70°
49°
23
76°
51°
24
79°
54°
25
80°
56°
26
82°
59°
27
87°
53°
28
81°
57°
29
73°
57°
30
78°
58°
31
78°
55°
1
74°
52°
2
74°
52°
3
73°
51°
4
74°
52°
5
77°
59°
6
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnsville
Johnsville's May 2026 forecast shows daily high temperatures ranging from 58° to 100°, with overnight lows between 47° and 68°. The average high for May is 79° with an average low of 56°. 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 Johnsville. See also: June | July | August.
