S
M
T
W
T
F
S
31
72°
42°
1
85°
45°
2
89°
52°
3
71°
54°
4
72°
53°
5
66°
51°
6
63°
48°
7
68°
46°
8
61°
51°
9
67°
50°
10
69°
51°
11
80°
46°
12
82°
49°
13
90°
54°
14
94°
61°
15
98°
61°
16
80°
53°
17
81°
54°
18
84°
58°
19
87°
54°
20
78°
53°
21
88°
56°
22
98°
61°
23
93°
60°
24
89°
58°
25
83°
56°
26
84°
58°
27
86°
59°
28
89°
59°
29
80°
55°
30
75°
54°
1
75°
52°
2
78°
57°
3
80°
57°
4
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Johnson City
Johnson City's June 2026 forecast shows daily high temperatures ranging from 75° to 98°, with overnight lows between 52° and 61°. The average high for June is 84° 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 June weather will actually feel in Johnson City. See also: July | August | September.