S
M
T
W
T
F
S
30
85°
60°
31
79°
55°
1
77°
55°
2
76°
56°
3
76°
54°
4
77°
57°
5
76°
62°
6
78°
62°
7
80°
61°
8
82°
60°
9
83°
59°
10
81°
60°
11
84°
61°
12
83°
60°
13
82°
60°
14
80°
56°
15
83°
48°
16
74°
48°
17
73°
49°
18
73°
49°
19
74°
52°
20
72°
56°
21
75°
55°
22
72°
54°
23
78°
56°
24
79°
55°
25
79°
55°
26
80°
56°
27
79°
52°
28
78°
44°
29
76°
44°
30
66°
49°
1
66°
46°
2
68°
50°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Flemington
Flemington's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 44° and 62°. The average high for September is 77° 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 Flemington. See also: October | November | December.