S
M
T
W
T
F
S
26
59°
39°
27
63°
41°
28
52°
39°
29
55°
34°
30
N/A
1
65°
45°
2
59°
45°
3
53°
40°
4
55°
39°
5
52°
35°
6
50°
37°
7
53°
39°
8
55°
41°
9
56°
42°
10
56°
44°
11
56°
44°
12
58°
45°
13
52°
41°
14
54°
40°
15
54°
46°
16
59°
45°
17
56°
45°
18
56°
44°
19
55°
46°
20
55°
46°
21
56°
44°
22
55°
43°
23
55°
42°
24
56°
42°
25
55°
41°
26
55°
41°
27
57°
46°
28
56°
47°
29
58°
44°
30
56°
42°
31
55°
42°
1
55°
43°
2
56°
43°
3
55°
44°
4
56°
43°
5
56°
43°
6
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harthill
Harthill's May 2026 forecast shows daily high temperatures ranging from 50° to 65°, with overnight lows between 35° and 47°. The average high for May is 56° with an average low of 43°. 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 Harthill. See also: June | July | August.
