S
M
T
W
T
F
S
30
90°
74°
31
90°
75°
1
89°
77°
2
88°
77°
3
90°
75°
4
89°
77°
5
90°
77°
6
88°
77°
7
87°
74°
8
88°
73°
9
90°
74°
10
89°
75°
11
90°
74°
12
88°
74°
13
90°
74°
14
90°
73°
15
88°
74°
16
89°
72°
17
84°
74°
18
87°
74°
19
86°
74°
20
86°
74°
21
87°
73°
22
85°
74°
23
86°
74°
24
86°
73°
25
85°
74°
26
87°
73°
27
87°
73°
28
86°
72°
29
84°
73°
30
84°
71°
1
83°
72°
2
84°
72°
3
85°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Port Richey
New Port Richey's September 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 71° and 77°. The average high for September is 87° with an average low of 74°. 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 Port Richey. See also: October | November | December.
