S
M
T
W
T
F
S
26
85°
60°
27
85°
65°
28
73°
65°
29
77°
61°
30
83°
59°
31
85°
63°
1
86°
65°
2
83°
66°
3
84°
65°
4
84°
66°
5
88°
68°
6
87°
67°
7
87°
67°
8
86°
63°
9
87°
66°
10
86°
67°
11
86°
67°
12
83°
66°
13
83°
67°
14
84°
65°
15
80°
61°
16
81°
64°
17
83°
66°
18
79°
66°
19
83°
65°
20
83°
64°
21
82°
63°
22
82°
64°
23
84°
66°
24
86°
58°
25
78°
57°
26
79°
64°
27
83°
66°
28
86°
66°
29
86°
65°
30
85°
61°
31
79°
56°
1
76°
55°
2
75°
55°
3
75°
56°
4
78°
62°
5
83°
63°
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 73° to 88°, with overnight lows between 55° and 68°. 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.
