S
M
T
W
T
F
S
30
74°
63°
31
N/A
1
85°
56°
2
79°
53°
3
80°
65°
4
81°
62°
5
78°
60°
6
78°
57°
7
73°
54°
8
72°
53°
9
71°
53°
10
70°
47°
11
66°
48°
12
66°
48°
13
65°
50°
14
68°
47°
15
73°
52°
16
72°
49°
17
70°
52°
18
71°
53°
19
71°
51°
20
70°
51°
21
71°
53°
22
71°
52°
23
70°
52°
24
71°
51°
25
71°
50°
26
70°
51°
27
71°
50°
28
70°
50°
29
68°
49°
30
68°
49°
1
69°
48°
2
68°
48°
3
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Winter
Winter's September 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 47° and 65°. The average high for September is 72° with an average low of 52°. 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 Winter. See also: October | November | December.
