S
M
T
W
T
F
S
30
81°
64°
31
81°
56°
1
80°
56°
2
76°
55°
3
75°
60°
4
78°
64°
5
82°
55°
6
82°
54°
7
74°
54°
8
75°
60°
9
76°
61°
10
77°
59°
11
74°
59°
12
72°
58°
13
73°
52°
14
71°
50°
15
71°
52°
16
72°
55°
17
70°
58°
18
78°
58°
19
79°
59°
20
78°
57°
21
77°
54°
22
74°
55°
23
69°
49°
24
70°
48°
25
67°
48°
26
68°
47°
27
68°
47°
28
Hist. Avg.
71°
51°
29
Hist. Avg.
70°
51°
30
Hist. Avg.
70°
50°
1
Hist. Avg.
69°
50°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
49°
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 67° to 82°, with overnight lows between 47° and 64°. The average high for September is 75° with an average low of 55°. 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.
