S
M
T
W
T
F
S
30
83°
59°
31
78°
68°
1
90°
74°
2
83°
74°
3
89°
74°
4
86°
66°
5
82°
64°
6
78°
65°
7
78°
67°
8
81°
66°
9
82°
67°
10
81°
67°
11
82°
65°
12
76°
65°
13
76°
64°
14
80°
68°
15
76°
67°
16
76°
68°
17
75°
63°
18
73°
59°
19
72°
60°
20
73°
63°
21
76°
65°
22
78°
66°
23
80°
66°
24
80°
64°
25
77°
64°
26
77°
63°
27
78°
64°
28
77°
63°
29
78°
62°
30
73°
61°
1
69°
59°
2
71°
61°
3
75°
62°
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 69° to 90°, with overnight lows between 59° and 74°. The average high for September is 78° with an average low of 65°. 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.
