S
M
T
W
T
F
S
30
88°
65°
31
91°
65°
1
89°
60°
2
88°
66°
3
90°
69°
4
86°
65°
5
83°
68°
6
79°
68°
7
84°
67°
8
83°
62°
9
76°
59°
10
78°
61°
11
81°
62°
12
79°
59°
13
72°
58°
14
70°
58°
15
75°
60°
16
79°
61°
17
77°
59°
18
71°
51°
19
75°
57°
20
76°
57°
21
66°
53°
22
71°
56°
23
71°
56°
24
73°
55°
25
69°
54°
26
70°
55°
27
71°
56°
28
71°
55°
29
69°
54°
30
68°
52°
1
59°
46°
2
57°
41°
3
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Columbia Heights
Columbia Heights's September 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 40° and 68°. The average high for September is 73° with an average low of 57°. 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 Columbia Heights. See also: October | November | December.