S
M
T
W
T
F
S
26
72°
39°
27
73°
45°
28
67°
38°
29
67°
33°
30
59°
44°
1
63°
45°
2
75°
36°
3
87°
39°
4
87°
43°
5
59°
38°
6
45°
34°
7
79°
34°
8
79°
45°
9
89°
50°
10
69°
46°
11
86°
43°
12
90°
46°
13
88°
46°
14
98°
53°
15
90°
53°
16
95°
54°
17
90°
59°
18
83°
48°
19
68°
43°
20
71°
40°
21
75°
52°
22
73°
51°
23
76°
55°
24
86°
58°
25
87°
57°
26
81°
56°
27
74°
58°
28
79°
57°
29
83°
56°
30
80°
55°
31
82°
57°
1
87°
58°
2
84°
58°
3
82°
60°
4
86°
57°
5
81°
62°
6
83°
63°
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 73° to 87°, with overnight lows between 51° and 63°. The average high for May is 82° with an average low of 57°. 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.
