S
M
T
W
T
F
S
30
80°
61°
31
79°
71°
1
85°
69°
2
72°
67°
3
88°
69°
4
87°
73°
5
81°
71°
6
79°
65°
7
81°
60°
8
83°
61°
9
87°
65°
10
88°
72°
11
83°
66°
12
80°
62°
13
84°
68°
14
76°
65°
15
74°
59°
16
82°
69°
17
86°
70°
18
84°
63°
19
73°
63°
20
76°
65°
21
72°
59°
22
70°
56°
23
71°
57°
24
70°
58°
25
74°
57°
26
73°
58°
27
72°
56°
28
71°
54°
29
76°
56°
30
70°
51°
1
69°
53°
2
70°
57°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Colonia
Colonia's September 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 51° and 70°. The average high for September is 74° with an average low of 59°. 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 Colonia. See also: October | November | December.
