S
M
T
W
T
F
S
28
82°
64°
29
86°
65°
30
89°
69°
1
90°
69°
2
91°
68°
3
90°
70°
4
89°
63°
5
83°
62°
6
82°
67°
7
84°
64°
8
84°
63°
9
85°
68°
10
84°
68°
11
85°
63°
12
84°
67°
13
88°
67°
14
83°
70°
15
87°
70°
16
91°
71°
17
92°
70°
18
91°
63°
19
90°
62°
20
82°
64°
21
84°
70°
22
91°
71°
23
Hist. Avg.
88°
68°
24
Hist. Avg.
88°
68°
25
Hist. Avg.
88°
67°
26
Hist. Avg.
88°
67°
27
Hist. Avg.
88°
67°
28
Hist. Avg.
88°
67°
29
Hist. Avg.
88°
67°
30
Hist. Avg.
88°
67°
31
Hist. Avg.
88°
67°
1
Hist. Avg.
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Johnston City
Johnston City's July 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 62° and 71°. The average high for July is 87° with an average low of 67°. 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 Johnston City. See also: August | September | October.