S
M
T
W
T
F
S
30
68°
57°
31
66°
52°
1
70°
50°
2
66°
57°
3
70°
63°
4
63°
52°
5
62°
50°
6
70°
56°
7
62°
50°
8
57°
47°
9
59°
48°
10
61°
53°
11
60°
50°
12
60°
47°
13
60°
49°
14
60°
50°
15
60°
48°
16
59°
51°
17
60°
51°
18
61°
50°
19
62°
51°
20
63°
51°
21
63°
54°
22
62°
53°
23
63°
52°
24
61°
52°
25
62°
53°
26
62°
52°
27
61°
49°
28
61°
52°
29
62°
52°
30
61°
49°
1
56°
46°
2
55°
46°
3
56°
45°
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 55° to 70°, with overnight lows between 45° and 56°. The average high for September is 61° with an average low of 50°. 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.
