S
M
T
W
T
F
S
30
72°
56°
31
73°
57°
1
73°
54°
2
72°
48°
3
68°
46°
4
64°
53°
5
65°
55°
6
72°
48°
7
71°
47°
8
63°
45°
9
62°
51°
10
64°
54°
11
66°
56°
12
70°
54°
13
70°
49°
14
67°
47°
15
60°
44°
16
60°
48°
17
62°
47°
18
59°
43°
19
66°
41°
20
59°
41°
21
56°
50°
22
61°
50°
23
65°
44°
24
62°
47°
25
59°
50°
26
61°
50°
27
63°
42°
28
64°
41°
29
59°
44°
30
54°
47°
1
58°
43°
2
61°
47°
3
52°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Christmas
Christmas's September 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 37° and 57°. The average high for September is 64° with an average low of 48°. 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 Christmas. See also: October | November | December.