S
M
T
W
T
F
S
30
94°
71°
31
93°
66°
1
90°
70°
2
92°
71°
3
94°
70°
4
93°
70°
5
93°
69°
6
92°
66°
7
89°
63°
8
85°
62°
9
85°
63°
10
90°
67°
11
92°
67°
12
92°
65°
13
84°
66°
14
87°
68°
15
91°
65°
16
90°
59°
17
83°
59°
18
80°
60°
19
80°
58°
20
81°
58°
21
80°
59°
22
80°
57°
23
79°
59°
24
80°
63°
25
80°
63°
26
85°
62°
27
86°
63°
28
86°
63°
29
85°
62°
30
84°
57°
1
79°
60°
2
82°
54°
3
77°
55°
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 77° to 94°, with overnight lows between 54° and 71°. The average high for September is 86° with an average low of 63°. 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.