S
M
T
W
T
F
S
30
77°
51°
31
78°
52°
1
78°
54°
2
79°
55°
3
77°
55°
4
77°
54°
5
76°
54°
6
75°
53°
7
75°
54°
8
74°
53°
9
76°
52°
10
75°
52°
11
76°
50°
12
76°
52°
13
75°
53°
14
76°
54°
15
75°
53°
16
74°
51°
17
71°
52°
18
70°
48°
19
71°
40°
20
64°
49°
21
65°
47°
22
66°
41°
23
64°
40°
24
63°
42°
25
66°
49°
26
70°
48°
27
63°
42°
28
63°
40°
29
62°
41°
30
62°
46°
1
63°
48°
2
61°
41°
3
62°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richford
Richford's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 37° and 55°. The average high for September is 71° with an average low of 49°. 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 Richford. See also: October | November | December.