S
M
T
W
T
F
S
26
54°
40°
27
68°
37°
28
57°
50°
29
54°
50°
30
54°
40°
1
55°
33°
2
48°
34°
3
59°
36°
4
75°
42°
5
78°
55°
6
64°
44°
7
58°
38°
8
58°
43°
9
62°
41°
10
71°
49°
11
63°
40°
12
61°
39°
13
67°
47°
14
68°
47°
15
66°
45°
16
71°
47°
17
72°
48°
18
76°
53°
19
75°
50°
20
76°
53°
21
77°
52°
22
74°
46°
23
67°
44°
24
67°
46°
25
68°
47°
26
69°
46°
27
69°
46°
28
70°
47°
29
69°
46°
30
69°
48°
31
71°
57°
1
72°
52°
2
73°
49°
3
72°
53°
4
75°
55°
5
73°
52°
6
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lock Haven
Lock Haven's May 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 38° and 58°. The average high for May is 70° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Lock Haven. See also: June | July | August.
