S
M
T
W
T
F
S
26
91°
71°
27
90°
70°
28
89°
70°
29
86°
68°
30
87°
71°
31
90°
70°
1
88°
70°
2
91°
71°
3
92°
71°
4
92°
70°
5
91°
69°
6
91°
70°
7
90°
70°
8
91°
71°
9
92°
70°
10
92°
69°
11
89°
68°
12
91°
69°
13
90°
69°
14
86°
65°
15
84°
62°
16
83°
62°
17
85°
65°
18
85°
65°
19
86°
68°
20
89°
68°
21
85°
67°
22
86°
67°
23
89°
68°
24
91°
66°
25
87°
66°
26
87°
67°
27
86°
64°
28
85°
65°
29
88°
64°
30
86°
66°
31
85°
66°
1
84°
65°
2
86°
65°
3
83°
59°
4
82°
57°
5
81°
56°
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 81° to 92°, with overnight lows between 56° and 71°. The average high for August is 88° with an average low of 67°. 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.
