S
M
T
W
T
F
S
30
78°
61°
31
81°
65°
1
83°
65°
2
84°
64°
3
84°
58°
4
82°
56°
5
76°
57°
6
76°
62°
7
77°
62°
8
80°
61°
9
81°
62°
10
77°
61°
11
81°
60°
12
81°
61°
13
80°
61°
14
78°
60°
15
81°
61°
16
81°
57°
17
79°
60°
18
77°
54°
19
78°
52°
20
72°
51°
21
70°
49°
22
70°
56°
23
71°
53°
24
75°
49°
25
69°
48°
26
68°
48°
27
70°
50°
28
74°
54°
29
73°
52°
30
74°
51°
1
68°
53°
2
68°
46°
3
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prospect Park
Prospect Park's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 46° and 65°. The average high for September is 76° with an average low of 56°. 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 Prospect Park. See also: October | November | December.
