S
M
T
W
T
F
S
26
82°
66°
27
86°
63°
28
85°
68°
29
85°
65°
30
77°
66°
1
66°
55°
2
73°
51°
3
77°
43°
4
78°
48°
5
81°
54°
6
81°
68°
7
78°
64°
8
71°
64°
9
75°
64°
10
83°
64°
11
79°
55°
12
83°
56°
13
88°
55°
14
83°
55°
15
84°
57°
16
88°
60°
17
86°
63°
18
86°
62°
19
87°
64°
20
86°
62°
21
87°
64°
22
86°
61°
23
83°
63°
24
84°
64°
25
86°
65°
26
88°
65°
27
86°
64°
28
86°
65°
29
87°
66°
30
84°
66°
31
84°
67°
1
86°
67°
2
88°
66°
3
89°
67°
4
87°
68°
5
85°
68°
6
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hawthorn
Hawthorn's May 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 55° and 68°. The average high for May is 85° with an average low of 63°. 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 Hawthorn. See also: June | July | August.