S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
72°
48°
3
75°
47°
4
80°
52°
5
79°
62°
6
80°
66°
7
73°
51°
8
73°
54°
9
79°
58°
10
82°
64°
11
79°
62°
12
78°
55°
13
80°
58°
14
83°
57°
15
82°
60°
16
95°
67°
17
82°
66°
18
81°
66°
19
82°
67°
20
81°
67°
21
82°
63°
22
82°
61°
23
80°
60°
24
81°
62°
25
82°
63°
26
82°
61°
27
81°
61°
28
82°
63°
29
84°
67°
30
84°
68°
31
85°
70°
1
83°
70°
2
84°
69°
3
85°
68°
4
85°
70°
5
86°
71°
6
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Deerfield
Deerfield's May 2026 forecast shows daily high temperatures ranging from 73° to 95°, with overnight lows between 47° and 71°. The average high for May is 82° 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 Deerfield. See also: June | July | August.