S
M
T
W
T
F
S
30
79°
52°
31
78°
53°
1
68°
61°
2
72°
61°
3
79°
60°
4
82°
58°
5
76°
53°
6
72°
48°
7
78°
46°
8
78°
47°
9
76°
54°
10
83°
65°
11
74°
48°
12
75°
42°
13
69°
60°
14
68°
45°
15
70°
41°
16
78°
48°
17
75°
58°
18
76°
51°
19
65°
41°
20
55°
43°
21
64°
49°
22
65°
41°
23
65°
35°
24
71°
44°
25
71°
54°
26
63°
53°
27
60°
54°
28
59°
54°
29
67°
50°
30
74°
56°
1
77°
54°
2
75°
51°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deerfield
Deerfield's September 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 44° and 56°. The average high for September is 69° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Deerfield. See also: October | November | December.
