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
98°
74°
8
99°
69°
9
83°
56°
10
85°
65°
11
92°
62°
12
85°
59°
13
79°
58°
14
75°
51°
15
74°
52°
16
78°
56°
17
81°
55°
18
75°
56°
19
72°
53°
20
78°
50°
21
82°
57°
22
81°
56°
23
82°
57°
24
78°
57°
25
70°
56°
26
76°
56°
27
78°
55°
28
77°
56°
29
72°
53°
30
77°
44°
1
64°
43°
2
65°
40°
3
64°
40°
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 64° to 99°, with overnight lows between 40° and 74°. The average high for September is 79° with an average low of 55°. 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.
