S
M
T
W
T
F
S
26
87°
65°
27
85°
67°
28
87°
67°
29
87°
66°
30
86°
67°
31
85°
67°
1
86°
66°
2
85°
67°
3
85°
67°
4
87°
66°
5
85°
66°
6
85°
65°
7
86°
67°
8
86°
61°
9
79°
60°
10
78°
59°
11
79°
64°
12
79°
65°
13
81°
66°
14
84°
67°
15
83°
66°
16
83°
62°
17
81°
57°
18
79°
58°
19
80°
64°
20
83°
63°
21
85°
64°
22
84°
62°
23
84°
64°
24
83°
58°
25
78°
58°
26
78°
57°
27
76°
57°
28
76°
56°
29
78°
57°
30
78°
60°
31
82°
63°
1
84°
63°
2
84°
62°
3
83°
56°
4
82°
53°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Williamsport
Williamsport's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 53° and 67°. The average high for August is 82° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Williamsport. See also: September | October | November.
