S
M
T
W
T
F
S
30
104°
73°
31
99°
73°
1
98°
72°
2
98°
72°
3
99°
74°
4
101°
73°
5
99°
72°
6
100°
74°
7
102°
73°
8
102°
74°
9
100°
72°
10
98°
70°
11
96°
72°
12
96°
72°
13
97°
73°
14
98°
72°
15
96°
69°
16
94°
71°
17
95°
70°
18
95°
72°
19
100°
65°
20
96°
67°
21
Hist. Avg.
95°
74°
22
Hist. Avg.
94°
73°
23
Hist. Avg.
94°
73°
24
Hist. Avg.
94°
72°
25
Hist. Avg.
93°
72°
26
Hist. Avg.
93°
71°
27
Hist. Avg.
93°
71°
28
Hist. Avg.
92°
70°
29
Hist. Avg.
92°
70°
30
Hist. Avg.
92°
70°
1
Hist. Avg.
91°
69°
2
Hist. Avg.
91°
69°
3
Hist. Avg.
90°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in New River
New River's September 2026 forecast shows daily high temperatures ranging from 94° to 104°, with overnight lows between 65° and 74°. The average high for September is 98° with an average low of 72°. 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 New River. See also: October | November | December.