S
M
T
W
T
F
S
30
80°
61°
31
82°
64°
1
85°
64°
2
85°
63°
3
86°
57°
4
83°
55°
5
78°
56°
6
78°
62°
7
79°
62°
8
82°
61°
9
83°
60°
10
79°
61°
11
82°
60°
12
83°
61°
13
82°
61°
14
80°
60°
15
83°
61°
16
83°
57°
17
81°
60°
18
79°
54°
19
79°
52°
20
74°
51°
21
72°
49°
22
71°
56°
23
72°
53°
24
76°
49°
25
70°
48°
26
70°
48°
27
72°
50°
28
76°
54°
29
75°
52°
30
76°
51°
1
68°
53°
2
68°
46°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northfield
Northfield's September 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 46° and 64°. The average high for September is 78° 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 Northfield. See also: October | November | December.
