S
M
T
W
T
F
S
26
81°
60°
27
84°
63°
28
75°
64°
29
72°
62°
30
77°
63°
31
84°
59°
1
83°
60°
2
75°
68°
3
81°
63°
4
82°
56°
5
85°
62°
6
82°
66°
7
85°
67°
8
82°
66°
9
84°
66°
10
84°
68°
11
82°
66°
12
84°
65°
13
85°
66°
14
82°
57°
15
79°
59°
16
80°
59°
17
78°
60°
18
80°
58°
19
80°
58°
20
79°
60°
21
85°
59°
22
84°
60°
23
82°
59°
24
78°
55°
25
79°
56°
26
84°
60°
27
85°
63°
28
86°
59°
29
81°
55°
30
76°
54°
31
76°
56°
1
77°
61°
2
78°
61°
3
79°
60°
4
77°
61°
5
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lock Haven
Lock Haven's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 54° and 68°. The average high for August is 81° with an average low of 60°. 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 Lock Haven. See also: September | October | November.