S
M
T
W
T
F
S
27
66°
51°
28
67°
50°
29
68°
42°
30
68°
41°
1
65°
49°
2
73°
42°
3
72°
40°
4
69°
38°
5
61°
40°
6
62°
45°
7
60°
47°
8
61°
45°
9
66°
46°
10
69°
47°
11
71°
46°
12
70°
39°
13
68°
36°
14
58°
38°
15
56°
38°
16
56°
37°
17
57°
39°
18
57°
35°
19
58°
43°
20
61°
43°
21
57°
44°
22
66°
45°
23
65°
43°
24
66°
36°
25
64°
35°
26
58°
33°
27
55°
33°
28
54°
31°
29
53°
30°
30
52°
31°
31
Hist. Avg.
54°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Johnstown
Johnstown's October 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 30° and 51°. The average high for October is 63° with an average low of 41°. 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.