S
M
T
W
T
F
S
26
83°
60°
27
86°
66°
28
82°
65°
29
82°
61°
30
83°
64°
31
84°
62°
1
83°
64°
2
83°
63°
3
82°
64°
4
84°
63°
5
84°
65°
6
83°
62°
7
87°
67°
8
86°
67°
9
87°
66°
10
84°
65°
11
80°
60°
12
80°
63°
13
84°
67°
14
86°
67°
15
86°
66°
16
85°
66°
17
81°
65°
18
80°
65°
19
81°
63°
20
82°
62°
21
84°
64°
22
83°
65°
23
85°
65°
24
85°
64°
25
86°
66°
26
86°
65°
27
85°
64°
28
81°
58°
29
82°
63°
30
81°
64°
31
84°
64°
1
85°
63°
2
85°
60°
3
84°
55°
4
77°
57°
5
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
School-Day-December Weather in Williamsport
Williamsport's School-Day-December 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 55° and 67°. The average high for School-Day-December is 83° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how School-Day-December weather will actually feel in Williamsport. See also: September | October | November.
