S
M
T
W
T
F
S
28
85°
67°
29
89°
66°
30
90°
72°
1
93°
73°
2
92°
72°
3
94°
71°
4
90°
69°
5
86°
69°
6
81°
67°
7
83°
65°
8
86°
66°
9
85°
69°
10
81°
64°
11
81°
61°
12
80°
62°
13
82°
63°
14
81°
62°
15
82°
61°
16
82°
65°
17
81°
62°
18
84°
61°
19
83°
65°
20
80°
58°
21
78°
58°
22
79°
59°
23
79°
59°
24
81°
63°
25
83°
64°
26
79°
64°
27
81°
65°
28
85°
65°
29
85°
64°
30
84°
66°
31
85°
65°
1
83°
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 78° to 86°, with overnight lows between 58° and 69°. The average high for July is 82° 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.
