S
M
T
W
T
F
S
28
80°
63°
29
84°
67°
30
84°
66°
1
86°
65°
2
83°
65°
3
84°
63°
4
82°
63°
5
80°
64°
6
78°
61°
7
79°
62°
8
81°
63°
9
80°
66°
10
80°
66°
11
81°
65°
12
84°
68°
13
87°
67°
14
84°
66°
15
83°
67°
16
81°
66°
17
81°
64°
18
82°
64°
19
81°
65°
20
84°
67°
21
86°
68°
22
86°
67°
23
81°
65°
24
81°
67°
25
83°
67°
26
85°
66°
27
86°
68°
28
86°
68°
29
83°
67°
30
82°
67°
31
86°
68°
1
87°
67°
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 87°, with overnight lows between 61° and 68°. The average high for July is 83° with an average low of 66°. 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.
