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