S
M
T
W
T
F
S
27
63°
57°
28
69°
58°
29
71°
59°
30
75°
61°
1
77°
60°
2
80°
57°
3
71°
47°
4
60°
46°
5
68°
44°
6
63°
38°
7
69°
39°
8
73°
44°
9
70°
39°
10
69°
40°
11
57°
53°
12
70°
55°
13
84°
59°
14
78°
56°
15
64°
53°
16
68°
54°
17
52°
29°
18
61°
32°
19
68°
39°
20
68°
40°
21
68°
37°
22
66°
43°
23
66°
43°
24
62°
45°
25
61°
44°
26
64°
44°
27
59°
45°
28
58°
42°
29
59°
41°
30
58°
37°
31
51°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Williamsport
Williamsport's October 2026 forecast shows daily high temperatures ranging from 51° to 68°, with overnight lows between 29° and 45°. The average high for October is 61° 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 Williamsport. See also: November | December | January.
