S
M
T
W
T
F
S
30
81°
63°
31
N/A
1
90°
67°
2
84°
66°
3
79°
65°
4
83°
64°
5
77°
63°
6
76°
61°
7
73°
59°
8
76°
58°
9
79°
56°
10
74°
52°
11
75°
52°
12
77°
58°
13
77°
57°
14
72°
57°
15
77°
57°
16
77°
56°
17
75°
56°
18
74°
55°
19
76°
56°
20
76°
56°
21
75°
57°
22
77°
56°
23
76°
56°
24
75°
55°
25
75°
54°
26
74°
55°
27
75°
54°
28
75°
54°
29
73°
53°
30
72°
53°
1
72°
52°
2
73°
52°
3
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Prospect
New Prospect's September 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 51° and 67°. The average high for September is 76° with an average low of 57°. 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 Prospect. See also: October | November | December.
