S
M
T
W
T
F
S
30
76°
50°
31
77°
49°
1
75°
49°
2
74°
51°
3
75°
51°
4
73°
53°
5
75°
51°
6
74°
50°
7
72°
49°
8
73°
47°
9
72°
48°
10
73°
54°
11
72°
47°
12
72°
47°
13
76°
46°
14
74°
52°
15
75°
52°
16
72°
47°
17
70°
44°
18
72°
45°
19
74°
50°
20
75°
51°
21
75°
50°
22
70°
48°
23
74°
48°
24
73°
45°
25
70°
48°
26
67°
41°
27
72°
41°
28
65°
40°
29
64°
41°
30
66°
43°
1
65°
40°
2
Hist. Avg.
67°
40°
3
Hist. Avg.
66°
40°
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 64° to 77°, with overnight lows between 40° and 54°. The average high for September is 72° with an average low of 48°. 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.
