S
M
T
W
T
F
S
27
76°
51°
28
70°
54°
29
74°
52°
30
73°
41°
1
68°
38°
2
62°
38°
3
61°
40°
4
63°
42°
5
69°
40°
6
67°
47°
7
69°
48°
8
61°
44°
9
64°
43°
10
61°
42°
11
59°
46°
12
63°
41°
13
60°
46°
14
64°
35°
15
65°
33°
16
56°
35°
17
58°
38°
18
57°
43°
19
56°
41°
20
60°
47°
21
64°
46°
22
67°
44°
23
68°
43°
24
62°
35°
25
58°
32°
26
53°
32°
27
54°
35°
28
54°
32°
29
53°
32°
30
52°
30°
31
52°
29°
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 52° to 76°, with overnight lows between 29° and 54°. The average high for October is 62° with an average low of 40°. 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.