S
M
T
W
T
F
S
30
77°
62°
31
80°
56°
1
77°
55°
2
76°
55°
3
75°
53°
4
75°
53°
5
76°
56°
6
76°
58°
7
77°
56°
8
76°
57°
9
75°
53°
10
76°
59°
11
79°
60°
12
79°
60°
13
81°
59°
14
80°
60°
15
81°
58°
16
79°
58°
17
78°
59°
18
80°
58°
19
78°
57°
20
76°
52°
21
79°
48°
22
73°
47°
23
71°
54°
24
76°
55°
25
70°
47°
26
Hist. Avg.
73°
50°
27
Hist. Avg.
72°
50°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
71°
49°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
48°
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 70° to 81°, with overnight lows between 47° and 62°. The average high for September is 77° with an average low of 56°. 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.
