S
M
T
W
T
F
S
30
87°
69°
31
91°
69°
1
94°
74°
2
96°
75°
3
95°
76°
4
95°
72°
5
91°
72°
6
82°
67°
7
83°
58°
8
85°
58°
9
86°
66°
10
90°
71°
11
85°
69°
12
84°
70°
13
88°
68°
14
87°
69°
15
86°
68°
16
82°
66°
17
81°
65°
18
83°
64°
19
81°
61°
20
80°
63°
21
84°
68°
22
83°
67°
23
78°
66°
24
78°
66°
25
79°
65°
26
82°
66°
27
83°
65°
28
81°
65°
29
82°
64°
30
81°
64°
1
81°
63°
2
80°
64°
3
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Williamston
Williamston's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 71°. The average high for September is 83° with an average low of 65°. 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 Williamston. See also: October | November | December.
