S
M
T
W
T
F
S
30
90°
66°
31
92°
67°
1
94°
66°
2
94°
66°
3
93°
68°
4
94°
71°
5
94°
70°
6
93°
70°
7
93°
69°
8
92°
69°
9
91°
68°
10
91°
68°
11
92°
67°
12
91°
67°
13
91°
66°
14
90°
67°
15
91°
66°
16
90°
65°
17
86°
65°
18
85°
64°
19
89°
63°
20
82°
64°
21
83°
63°
22
84°
63°
23
85°
62°
24
88°
63°
25
88°
62°
26
87°
62°
27
89°
61°
28
87°
61°
29
86°
60°
30
86°
60°
1
84°
58°
2
86°
61°
3
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newell
Newell's September 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 54° and 71°. The average high for September is 89° with an average low of 65°. 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 Newell. See also: October | November | December.