S
M
T
W
T
F
S
26
61°
35°
27
65°
40°
28
60°
48°
29
50°
35°
30
50°
31°
1
48°
29°
2
43°
27°
3
59°
26°
4
69°
41°
5
60°
44°
6
49°
37°
7
51°
32°
8
57°
33°
9
62°
35°
10
52°
32°
11
52°
31°
12
55°
28°
13
54°
40°
14
54°
40°
15
64°
36°
16
68°
41°
17
82°
46°
18
83°
62°
19
81°
53°
20
56°
40°
21
61°
40°
22
61°
40°
23
55°
45°
24
60°
45°
25
73°
49°
26
80°
49°
27
74°
50°
28
65°
47°
29
73°
43°
30
66°
43°
31
72°
48°
1
68°
49°
2
71°
50°
3
78°
55°
4
80°
61°
5
77°
56°
6
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hillsburgh
Hillsburgh's May 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 48° and 61°. The average high for May is 74° with an average low of 53°. 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 Hillsburgh. See also: June | July | August.