S
M
T
W
T
F
S
26
60°
38°
27
69°
38°
28
60°
47°
29
54°
48°
30
51°
39°
1
51°
35°
2
46°
36°
3
53°
35°
4
69°
44°
5
75°
50°
6
55°
42°
7
53°
36°
8
53°
36°
9
53°
43°
10
61°
41°
11
56°
34°
12
59°
32°
13
61°
46°
14
48°
42°
15
58°
43°
16
74°
59°
17
76°
56°
18
84°
65°
19
87°
65°
20
73°
46°
21
60°
42°
22
61°
46°
23
67°
47°
24
68°
52°
25
71°
53°
26
70°
56°
27
71°
55°
28
73°
56°
29
64°
54°
30
65°
54°
31
68°
51°
1
64°
48°
2
64°
47°
3
65°
47°
4
65°
48°
5
67°
56°
6
70°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnson City
Johnson City's May 2026 forecast shows daily high temperatures ranging from 58° to 87°, with overnight lows between 42° and 65°. The average high for May is 69° with an average low of 52°. 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 City. See also: June | July | August.
