S
M
T
W
T
F
S
30
77°
59°
31
75°
60°
1
76°
58°
2
78°
54°
3
71°
50°
4
71°
53°
5
73°
56°
6
75°
57°
7
79°
58°
8
79°
56°
9
73°
53°
10
73°
55°
11
70°
46°
12
69°
49°
13
68°
46°
14
69°
45°
15
68°
44°
16
67°
42°
17
67°
44°
18
68°
41°
19
66°
40°
20
65°
40°
21
66°
41°
22
66°
43°
23
69°
46°
24
73°
50°
25
75°
51°
26
74°
50°
27
69°
45°
28
74°
49°
29
65°
38°
30
64°
48°
1
63°
49°
2
72°
37°
3
72°
35°
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 63° to 79°, with overnight lows between 35° and 60°. The average high for September is 71° with an average low of 48°. 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.
