S
M
T
W
T
F
S
30
85°
50°
31
75°
49°
1
75°
50°
2
78°
56°
3
75°
49°
4
74°
57°
5
78°
56°
6
81°
50°
7
79°
48°
8
75°
48°
9
73°
47°
10
73°
53°
11
75°
46°
12
74°
45°
13
71°
46°
14
72°
53°
15
77°
52°
16
76°
44°
17
78°
43°
18
68°
42°
19
67°
43°
20
68°
44°
21
68°
45°
22
65°
44°
23
66°
47°
24
69°
48°
25
70°
48°
26
73°
49°
27
73°
45°
28
72°
39°
29
65°
39°
30
65°
47°
1
64°
48°
2
67°
47°
3
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Guilford
Guilford's September 2026 forecast shows daily high temperatures ranging from 64° to 85°, with overnight lows between 39° and 57°. The average high for September is 72° 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.
