S
M
T
W
T
F
S
30
79°
52°
31
78°
53°
1
68°
61°
2
72°
61°
3
79°
60°
4
82°
58°
5
76°
53°
6
72°
48°
7
78°
46°
8
78°
47°
9
77°
67°
10
82°
54°
11
76°
44°
12
77°
57°
13
79°
58°
14
80°
54°
15
77°
64°
16
79°
56°
17
73°
55°
18
73°
55°
19
68°
47°
20
68°
50°
21
70°
49°
22
70°
48°
23
68°
52°
24
71°
52°
25
65°
42°
26
66°
43°
27
65°
51°
28
69°
48°
29
64°
43°
30
64°
48°
1
66°
49°
2
63°
45°
3
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greenfield
Greenfield's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 42° and 67°. The average high for September is 71° with an average low of 51°. 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 Greenfield. See also: October | November | December.