S
M
T
W
T
F
S
26
36°
19°
27
36°
23°
28
38°
26°
29
47°
24°
30
N/A
1
63°
38°
2
60°
32°
3
64°
33°
4
45°
25°
5
46°
27°
6
48°
29°
7
57°
36°
8
56°
33°
9
55°
35°
10
57°
35°
11
59°
38°
12
59°
39°
13
61°
38°
14
62°
37°
15
54°
31°
16
58°
39°
17
56°
43°
18
58°
39°
19
65°
33°
20
56°
33°
21
58°
35°
22
58°
41°
23
60°
39°
24
60°
34°
25
61°
43°
26
70°
44°
27
70°
42°
28
60°
38°
29
68°
36°
30
60°
38°
31
63°
44°
1
61°
47°
2
62°
47°
3
62°
46°
4
63°
48°
5
62°
48°
6
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harrowby
Harrowby's May 2026 forecast shows daily high temperatures ranging from 45° to 70°, with overnight lows between 25° and 48°. The average high for May is 59° with an average low of 38°. 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 Harrowby. See also: June | July | August.