S
M
T
W
T
F
S
26
79°
63°
27
80°
64°
28
82°
63°
29
83°
61°
30
83°
64°
31
84°
64°
1
83°
63°
2
81°
64°
3
81°
57°
4
77°
56°
5
74°
56°
6
73°
55°
7
78°
58°
8
81°
63°
9
81°
64°
10
82°
60°
11
80°
62°
12
77°
59°
13
77°
63°
14
76°
58°
15
Hist. Avg.
77°
58°
16
Hist. Avg.
77°
58°
17
Hist. Avg.
77°
58°
18
Hist. Avg.
77°
58°
19
Hist. Avg.
76°
58°
20
Hist. Avg.
76°
58°
21
Hist. Avg.
76°
58°
22
Hist. Avg.
76°
57°
23
Hist. Avg.
76°
57°
24
Hist. Avg.
76°
57°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
76°
57°
27
Hist. Avg.
75°
56°
28
Hist. Avg.
75°
56°
29
Hist. Avg.
75°
56°
30
Hist. Avg.
75°
56°
31
Hist. Avg.
74°
56°
1
Hist. Avg.
74°
55°
2
Hist. Avg.
74°
55°
3
Hist. Avg.
74°
55°
4
Hist. Avg.
74°
54°
5
Hist. Avg.
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Johnson City
Johnson City's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 55° and 64°. The average high for August is 80° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Johnson City. See also: September | October | November.
