S
M
T
W
T
F
S
27
77°
55°
28
77°
55°
29
76°
54°
30
75°
52°
1
75°
52°
2
74°
51°
3
75°
53°
4
75°
51°
5
73°
51°
6
73°
50°
7
74°
51°
8
74°
51°
9
73°
50°
10
72°
50°
11
73°
51°
12
67°
41°
13
65°
46°
14
61°
48°
15
60°
46°
16
65°
47°
17
64°
46°
18
68°
43°
19
64°
39°
20
57°
41°
21
56°
44°
22
56°
41°
23
57°
42°
24
58°
46°
25
64°
47°
26
65°
41°
27
67°
33°
28
65°
32°
29
53°
35°
30
54°
36°
31
53°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Johnstown
Johnstown's October 2026 forecast shows daily high temperatures ranging from 53° to 77°, with overnight lows between 32° and 55°. The average high for October is 67° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Johnstown. See also: November | December | January.