S
M
T
W
T
F
S
30
74°
56°
31
73°
56°
1
73°
57°
2
75°
57°
3
74°
58°
4
75°
56°
5
75°
55°
6
74°
56°
7
72°
53°
8
73°
54°
9
71°
60°
10
72°
53°
11
71°
53°
12
71°
54°
13
72°
59°
14
74°
55°
15
76°
57°
16
77°
59°
17
78°
59°
18
78°
58°
19
77°
50°
20
75°
50°
21
67°
55°
22
68°
56°
23
71°
57°
24
73°
58°
25
74°
49°
26
72°
46°
27
69°
47°
28
64°
46°
29
64°
47°
30
63°
46°
1
Hist. Avg.
67°
49°
2
Hist. Avg.
67°
48°
3
Hist. Avg.
66°
48°
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 63° to 78°, with overnight lows between 46° and 60°. The average high for September is 72° with an average low of 54°. 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.
