S
M
T
W
T
F
S
27
76°
54°
28
76°
53°
29
75°
53°
30
76°
52°
1
76°
53°
2
75°
54°
3
75°
54°
4
74°
53°
5
75°
53°
6
75°
54°
7
76°
53°
8
74°
51°
9
71°
47°
10
72°
49°
11
71°
50°
12
67°
47°
13
70°
46°
14
61°
47°
15
60°
42°
16
60°
43°
17
63°
46°
18
68°
46°
19
70°
47°
20
71°
47°
21
70°
46°
22
70°
48°
23
69°
47°
24
69°
48°
25
67°
47°
26
68°
44°
27
66°
38°
28
66°
35°
29
53°
34°
30
50°
31°
31
51°
31°
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 50° to 76°, with overnight lows between 31° and 54°. The average high for October is 69° with an average low of 47°. 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.