S
M
T
W
T
F
S
26
77°
58°
27
81°
63°
28
79°
54°
29
66°
50°
30
64°
44°
1
64°
44°
2
64°
39°
3
66°
40°
4
77°
59°
5
66°
46°
6
59°
44°
7
59°
38°
8
66°
44°
9
77°
52°
10
73°
53°
11
73°
46°
12
75°
47°
13
80°
50°
14
81°
66°
15
86°
67°
16
84°
68°
17
88°
70°
18
81°
67°
19
73°
57°
20
78°
63°
21
75°
60°
22
78°
60°
23
76°
60°
24
80°
65°
25
83°
66°
26
79°
59°
27
80°
64°
28
81°
63°
29
81°
64°
30
78°
62°
31
79°
64°
1
75°
64°
2
76°
65°
3
78°
66°
4
83°
66°
5
84°
67°
6
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnson
Johnson's May 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 50° and 70°. The average high for May is 80° with an average low of 64°. 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 Johnson. See also: June | July | August.
