S
M
T
W
T
F
S
30
77°
61°
31
82°
63°
1
83°
55°
2
82°
56°
3
76°
55°
4
77°
56°
5
76°
63°
6
80°
61°
7
82°
57°
8
75°
61°
9
74°
61°
10
76°
60°
11
77°
59°
12
78°
58°
13
75°
59°
14
72°
53°
15
73°
52°
16
72°
52°
17
72°
53°
18
71°
57°
19
75°
57°
20
74°
58°
21
76°
55°
22
72°
50°
23
70°
55°
24
69°
57°
25
74°
51°
26
66°
53°
27
73°
55°
28
73°
53°
29
Hist. Avg.
68°
49°
30
Hist. Avg.
68°
49°
1
Hist. Avg.
68°
48°
2
Hist. Avg.
67°
48°
3
Hist. Avg.
67°
48°
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 66° to 83°, with overnight lows between 50° and 63°. The average high for September is 75° with an average low of 57°. 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.