S
M
T
W
T
F
S
30
73°
58°
31
72°
56°
1
73°
60°
2
73°
64°
3
74°
66°
4
81°
66°
5
82°
65°
6
81°
58°
7
79°
56°
8
73°
58°
9
72°
56°
10
71°
58°
11
70°
60°
12
70°
58°
13
73°
57°
14
74°
61°
15
74°
61°
16
69°
59°
17
72°
60°
18
74°
59°
19
74°
53°
20
72°
56°
21
70°
53°
22
74°
51°
23
67°
51°
24
66°
52°
25
66°
53°
26
67°
50°
27
66°
50°
28
65°
52°
29
64°
48°
30
65°
48°
1
63°
53°
2
70°
50°
3
69°
52°
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 63° to 82°, with overnight lows between 48° and 66°. The average high for September is 71° with an average low of 56°. 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.
