S
M
T
W
T
F
S
30
75°
64°
31
85°
70°
1
87°
73°
2
91°
71°
3
90°
70°
4
82°
68°
5
78°
55°
6
77°
55°
7
79°
59°
8
82°
65°
9
86°
63°
10
78°
60°
11
76°
55°
12
75°
58°
13
78°
58°
14
78°
57°
15
77°
56°
16
78°
52°
17
77°
57°
18
72°
56°
19
78°
57°
20
76°
57°
21
76°
56°
22
75°
55°
23
73°
53°
24
69°
54°
25
75°
55°
26
73°
53°
27
66°
48°
28
64°
47°
29
63°
47°
30
64°
44°
1
62°
43°
2
63°
51°
3
68°
50°
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 62° to 90°, with overnight lows between 43° and 70°. The average high for September is 74° with an average low of 55°. 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.
