S
M
T
W
T
F
S
28
82°
63°
29
85°
58°
30
80°
57°
1
81°
61°
2
84°
65°
3
88°
66°
4
86°
66°
5
85°
65°
6
90°
58°
7
84°
58°
8
84°
59°
9
86°
65°
10
87°
60°
11
87°
66°
12
88°
66°
13
90°
59°
14
82°
59°
15
85°
61°
16
86°
58°
17
82°
65°
18
87°
65°
19
88°
60°
20
87°
64°
21
88°
65°
22
82°
65°
23
81°
64°
24
82°
66°
25
82°
66°
26
83°
65°
27
84°
66°
28
87°
66°
29
88°
65°
30
90°
66°
31
90°
66°
1
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Johnstown
Johnstown's July 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 57° and 66°. The average high for July is 85° with an average low of 63°. 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 Johnstown. See also: August | September | October.
