S
M
T
W
T
F
S
30
89°
72°
31
93°
73°
1
92°
72°
2
92°
72°
3
91°
71°
4
91°
73°
5
90°
72°
6
90°
72°
7
91°
71°
8
90°
71°
9
91°
72°
10
92°
71°
11
89°
70°
12
89°
71°
13
91°
71°
14
92°
70°
15
91°
70°
16
88°
69°
17
89°
71°
18
91°
70°
19
90°
70°
20
88°
69°
21
89°
71°
22
89°
71°
23
87°
70°
24
87°
69°
25
88°
67°
26
87°
68°
27
86°
69°
28
87°
69°
29
87°
67°
30
86°
69°
1
87°
67°
2
88°
66°
3
88°
68°
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 86° to 93°, with overnight lows between 66° and 73°. The average high for September is 89° with an average low of 70°. 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.