S
M
T
W
T
F
S
30
89°
69°
31
90°
68°
1
86°
67°
2
88°
67°
3
85°
61°
4
86°
60°
5
80°
59°
6
81°
63°
7
85°
63°
8
87°
62°
9
83°
67°
10
86°
65°
11
85°
64°
12
84°
63°
13
85°
61°
14
84°
62°
15
86°
64°
16
77°
59°
17
Hist. Avg.
82°
59°
18
Hist. Avg.
82°
59°
19
Hist. Avg.
81°
59°
20
Hist. Avg.
81°
58°
21
Hist. Avg.
80°
58°
22
Hist. Avg.
80°
58°
23
Hist. Avg.
80°
57°
24
Hist. Avg.
79°
57°
25
Hist. Avg.
79°
57°
26
Hist. Avg.
78°
56°
27
Hist. Avg.
78°
56°
28
Hist. Avg.
78°
56°
29
Hist. Avg.
77°
55°
30
Hist. Avg.
77°
55°
1
Hist. Avg.
76°
54°
2
Hist. Avg.
76°
54°
3
Hist. Avg.
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Deerfield
Deerfield's September 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 59° and 69°. The average high for September is 85° with an average low of 64°. 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.
