S
M
T
W
T
F
S
30
96°
70°
31
93°
72°
1
97°
71°
2
99°
75°
3
98°
77°
4
97°
74°
5
97°
70°
6
90°
71°
7
100°
70°
8
102°
71°
9
87°
72°
10
85°
66°
11
87°
63°
12
77°
62°
13
81°
71°
14
94°
63°
15
71°
53°
16
66°
56°
17
74°
53°
18
75°
52°
19
77°
52°
20
74°
52°
21
71°
50°
22
70°
48°
23
76°
49°
24
78°
57°
25
81°
57°
26
79°
56°
27
80°
56°
28
78°
54°
29
79°
54°
30
78°
52°
1
69°
52°
2
77°
53°
3
77°
54°
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 66° to 94°, with overnight lows between 48° and 71°. The average high for September is 77° 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 Nelson. See also: October | November | December.
