S
M
T
W
T
F
S
30
79°
63°
31
84°
67°
1
84°
67°
2
82°
65°
3
77°
61°
4
76°
58°
5
75°
58°
6
75°
57°
7
77°
64°
8
82°
58°
9
74°
56°
10
74°
57°
11
76°
52°
12
72°
55°
13
71°
54°
14
70°
53°
15
72°
55°
16
73°
56°
17
72°
55°
18
74°
53°
19
74°
52°
20
70°
51°
21
69°
51°
22
69°
52°
23
71°
54°
24
74°
51°
25
75°
56°
26
75°
57°
27
68°
54°
28
70°
52°
29
73°
49°
30
72°
48°
1
66°
51°
2
70°
57°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richboro
Richboro's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 46° and 67°. The average high for September is 74° 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 Richboro. See also: October | November | December.
