S
M
T
W
T
F
S
30
72°
52°
31
68°
48°
1
73°
42°
2
69°
53°
3
60°
54°
4
72°
58°
5
66°
53°
6
65°
46°
7
N/A
8
72°
44°
9
63°
59°
10
79°
49°
11
67°
46°
12
72°
50°
13
73°
54°
14
72°
48°
15
69°
50°
16
71°
47°
17
64°
44°
18
64°
46°
19
61°
42°
20
62°
41°
21
63°
44°
22
62°
49°
23
65°
48°
24
69°
47°
25
66°
48°
26
66°
43°
27
60°
41°
28
64°
43°
29
68°
46°
30
69°
46°
1
68°
47°
2
66°
46°
3
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Guilford
Guilford's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 41° and 59°. The average high for September is 67° with an average low of 47°. 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 Guilford. See also: October | November | December.