S
M
T
W
T
F
S
26
68°
32°
27
73°
32°
28
67°
36°
29
63°
44°
30
53°
44°
1
62°
39°
2
53°
41°
3
53°
31°
4
73°
30°
5
86°
49°
6
71°
50°
7
63°
39°
8
61°
31°
9
47°
31°
10
74°
46°
11
63°
41°
12
62°
33°
13
52°
34°
14
59°
49°
15
60°
47°
16
80°
41°
17
86°
53°
18
80°
53°
19
92°
68°
20
90°
52°
21
66°
40°
22
67°
47°
23
62°
46°
24
56°
45°
25
65°
49°
26
66°
52°
27
69°
51°
28
71°
52°
29
73°
51°
30
76°
52°
31
78°
56°
1
77°
50°
2
66°
50°
3
66°
49°
4
67°
53°
5
68°
54°
6
74°
54°
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 56° to 92°, with overnight lows between 40° and 68°. The average high for May is 71° with an average low of 51°. 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.