S
M
T
W
T
F
S
26
84°
66°
27
87°
68°
28
86°
67°
29
87°
67°
30
86°
66°
31
81°
66°
1
81°
65°
2
80°
67°
3
80°
66°
4
81°
66°
5
82°
64°
6
81°
66°
7
81°
64°
8
80°
63°
9
80°
66°
10
78°
66°
11
79°
65°
12
79°
65°
13
78°
63°
14
79°
63°
15
79°
64°
16
78°
60°
17
78°
60°
18
79°
61°
19
79°
61°
20
82°
64°
21
85°
58°
22
79°
56°
23
78°
56°
24
77°
58°
25
79°
61°
26
80°
63°
27
85°
62°
28
78°
64°
29
83°
63°
30
86°
56°
31
78°
54°
1
77°
56°
2
78°
61°
3
78°
55°
4
80°
62°
5
84°
61°
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 77° to 87°, with overnight lows between 54° and 68°. The average high for August is 81° 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 August weather will actually feel in Williamsport. See also: September | October | November.
