S
M
T
W
T
F
S
30
76°
52°
31
73°
50°
1
70°
51°
2
70°
49°
3
71°
49°
4
71°
50°
5
70°
50°
6
70°
53°
7
71°
57°
8
70°
50°
9
70°
50°
10
71°
49°
11
69°
50°
12
68°
51°
13
69°
52°
14
68°
50°
15
68°
52°
16
69°
47°
17
68°
46°
18
68°
47°
19
66°
54°
20
74°
52°
21
65°
46°
22
64°
43°
23
Hist. Avg.
68°
48°
24
Hist. Avg.
68°
48°
25
Hist. Avg.
67°
47°
26
Hist. Avg.
67°
47°
27
Hist. Avg.
66°
47°
28
Hist. Avg.
66°
46°
29
Hist. Avg.
66°
46°
30
Hist. Avg.
65°
46°
1
Hist. Avg.
65°
45°
2
Hist. Avg.
64°
45°
3
Hist. Avg.
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ancaster Heights
Ancaster Heights's September 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 43° and 57°. The average high for September is 70° with an average low of 50°. 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 Ancaster Heights. See also: October | November | December.