S
M
T
W
T
F
S
26
85°
67°
27
83°
66°
28
80°
63°
29
80°
65°
30
82°
67°
31
86°
67°
1
84°
66°
2
82°
66°
3
88°
66°
4
87°
64°
5
81°
63°
6
83°
62°
7
81°
60°
8
80°
59°
9
80°
58°
10
81°
59°
11
83°
65°
12
87°
67°
13
86°
62°
14
86°
59°
15
81°
61°
16
81°
65°
17
82°
58°
18
80°
59°
19
81°
58°
20
82°
58°
21
84°
63°
22
87°
64°
23
87°
63°
24
86°
64°
25
87°
64°
26
88°
63°
27
86°
62°
28
85°
63°
29
86°
63°
30
85°
56°
31
81°
54°
1
78°
53°
2
78°
54°
3
79°
55°
4
79°
54°
5
77°
55°
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 88°, with overnight lows between 53° and 67°. The average high for August is 83° with an average low of 61°. 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.
