S
M
T
W
T
F
S
26
62°
36°
27
72°
35°
28
70°
50°
29
64°
52°
30
52°
42°
1
54°
38°
2
50°
28°
3
50°
37°
4
63°
51°
5
64°
54°
6
55°
41°
7
49°
34°
8
47°
35°
9
51°
40°
10
54°
41°
11
54°
40°
12
55°
42°
13
53°
43°
14
55°
42°
15
61°
40°
16
62°
43°
17
61°
41°
18
62°
49°
19
67°
49°
20
69°
48°
21
71°
51°
22
67°
48°
23
62°
48°
24
68°
45°
25
62°
42°
26
64°
44°
27
63°
50°
28
64°
51°
29
69°
51°
30
66°
49°
31
67°
44°
1
64°
44°
2
64°
45°
3
65°
45°
4
65°
46°
5
66°
45°
6
66°
46°
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 47° to 71°, with overnight lows between 28° and 54°. The average high for May is 61° with an average low of 44°. 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.