S
M
T
W
T
F
S
26
87°
66°
27
90°
67°
28
85°
71°
29
80°
69°
30
82°
67°
31
90°
64°
1
87°
64°
2
82°
73°
3
88°
66°
4
88°
63°
5
86°
73°
6
93°
71°
7
91°
71°
8
89°
71°
9
92°
71°
10
91°
67°
11
87°
69°
12
88°
69°
13
90°
70°
14
82°
66°
15
88°
68°
16
88°
73°
17
87°
65°
18
84°
65°
19
85°
63°
20
88°
64°
21
88°
66°
22
89°
66°
23
87°
63°
24
83°
61°
25
82°
60°
26
86°
62°
27
87°
65°
28
79°
58°
29
80°
59°
30
85°
64°
31
86°
64°
1
86°
63°
2
85°
64°
3
86°
64°
4
86°
63°
5
84°
63°
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 79° to 90°, with overnight lows between 58° and 73°. The average high for August is 86° with an average low of 64°. 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.
