S
M
T
W
T
F
S
26
32°
26°
27
34°
28°
28
40°
28°
29
48°
26°
30
48°
24°
1
53°
28°
2
69°
27°
3
61°
39°
4
51°
35°
5
44°
23°
6
47°
17°
7
55°
34°
8
62°
39°
9
53°
37°
10
64°
34°
11
81°
40°
12
68°
40°
13
81°
36°
14
69°
41°
15
68°
37°
16
68°
43°
17
51°
37°
18
33°
24°
19
49°
31°
20
56°
33°
21
52°
35°
22
50°
34°
23
68°
41°
24
71°
41°
25
79°
44°
26
72°
42°
27
72°
42°
28
71°
40°
29
74°
43°
30
72°
41°
31
64°
36°
1
63°
41°
2
62°
40°
3
60°
40°
4
68°
43°
5
68°
43°
6
61°
39°
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 33° to 79°, with overnight lows between 24° and 44°. The average high for May is 63° with an average low of 39°. 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.