S
M
T
W
T
F
S
28
82°
57°
29
84°
61°
30
86°
66°
1
91°
71°
2
92°
72°
3
91°
70°
4
85°
68°
5
78°
65°
6
71°
63°
7
73°
63°
8
81°
59°
9
85°
67°
10
81°
64°
11
81°
62°
12
82°
58°
13
85°
66°
14
95°
72°
15
88°
66°
16
82°
62°
17
77°
58°
18
78°
64°
19
76°
62°
20
79°
60°
21
78°
60°
22
76°
62°
23
76°
62°
24
77°
63°
25
78°
60°
26
76°
61°
27
74°
59°
28
77°
62°
29
77°
59°
30
74°
61°
31
74°
63°
1
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Johnson City
Johnson City's July 2026 forecast shows daily high temperatures ranging from 74° to 95°, with overnight lows between 58° and 72°. The average high for July is 78° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Johnson City. See also: August | September | October.