S
M
T
W
T
F
S
30
105°
77°
31
103°
73°
1
102°
72°
2
102°
75°
3
100°
73°
4
100°
73°
5
102°
75°
6
105°
73°
7
103°
76°
8
104°
76°
9
105°
71°
10
85°
68°
11
91°
74°
12
94°
73°
13
98°
76°
14
97°
69°
15
80°
65°
16
87°
67°
17
86°
64°
18
85°
63°
19
79°
57°
20
79°
58°
21
77°
57°
22
81°
57°
23
87°
63°
24
84°
63°
25
85°
64°
26
85°
62°
27
84°
63°
28
84°
63°
29
83°
61°
30
83°
60°
1
82°
59°
2
83°
61°
3
83°
60°
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 77° to 105°, with overnight lows between 57° and 76°. The average high for September is 86° with an average low of 64°. 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.
