S
M
T
W
T
F
S
30
102°
82°
31
99°
81°
1
99°
77°
2
99°
72°
3
95°
66°
4
97°
72°
5
100°
68°
6
82°
72°
7
97°
68°
8
99°
73°
9
104°
81°
10
106°
84°
11
100°
79°
12
98°
78°
13
96°
74°
14
95°
71°
15
90°
72°
16
92°
69°
17
94°
72°
18
95°
71°
19
94°
72°
20
89°
69°
21
85°
65°
22
85°
64°
23
87°
63°
24
86°
62°
25
79°
57°
26
80°
58°
27
84°
58°
28
84°
57°
29
81°
58°
30
84°
60°
1
87°
61°
2
88°
62°
3
87°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nelson
Nelson's September 2026 forecast shows daily high temperatures ranging from 79° to 100°, with overnight lows between 57° and 79°. The average high for September is 89° with an average low of 66°. 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 Nelson. See also: October | November | December.
