S
M
T
W
T
F
S
30
73°
58°
31
78°
58°
1
78°
56°
2
79°
50°
3
75°
54°
4
77°
55°
5
75°
54°
6
75°
55°
7
69°
55°
8
72°
49°
9
69°
47°
10
67°
52°
11
69°
54°
12
75°
50°
13
73°
54°
14
74°
53°
15
72°
55°
16
Hist. Avg.
70°
51°
17
Hist. Avg.
70°
51°
18
Hist. Avg.
70°
51°
19
Hist. Avg.
69°
51°
20
Hist. Avg.
69°
50°
21
Hist. Avg.
69°
50°
22
Hist. Avg.
68°
50°
23
Hist. Avg.
68°
49°
24
Hist. Avg.
68°
49°
25
Hist. Avg.
67°
49°
26
Hist. Avg.
67°
48°
27
Hist. Avg.
66°
48°
28
Hist. Avg.
66°
48°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
65°
47°
1
Hist. Avg.
65°
47°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Northfield
Northfield's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 47° and 58°. The average high for September is 74° with an average low of 53°. 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.