S
M
T
W
T
F
S
30
79°
65°
31
80°
68°
1
90°
68°
2
88°
72°
3
76°
68°
4
79°
66°
5
77°
58°
6
76°
56°
7
78°
54°
8
80°
58°
9
80°
69°
10
75°
57°
11
76°
49°
12
83°
58°
13
74°
51°
14
69°
45°
15
73°
57°
16
72°
59°
17
72°
54°
18
70°
54°
19
65°
55°
20
67°
52°
21
68°
52°
22
69°
55°
23
73°
54°
24
72°
50°
25
70°
49°
26
71°
49°
27
70°
50°
28
66°
45°
29
70°
51°
30
68°
50°
1
71°
50°
2
72°
49°
3
69°
50°
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 65° to 73°, with overnight lows between 45° and 59°. The average high for September is 70° with an average low of 52°. 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.
