S
M
T
W
T
F
S
30
78°
68°
31
90°
71°
1
88°
70°
2
92°
73°
3
84°
68°
4
80°
65°
5
78°
56°
6
75°
61°
7
77°
59°
8
72°
58°
9
73°
59°
10
78°
59°
11
72°
56°
12
74°
55°
13
71°
55°
14
72°
56°
15
75°
61°
16
77°
60°
17
75°
59°
18
70°
57°
19
75°
60°
20
77°
61°
21
77°
61°
22
76°
60°
23
77°
60°
24
76°
59°
25
76°
58°
26
74°
57°
27
75°
58°
28
75°
57°
29
74°
56°
30
72°
55°
1
72°
55°
2
71°
56°
3
73°
55°
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 70° to 92°, with overnight lows between 55° and 73°. The average high for September is 76° with an average low of 59°. 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.
