S
M
T
W
T
F
S
30
87°
69°
31
92°
69°
1
95°
72°
2
95°
75°
3
98°
74°
4
99°
73°
5
90°
72°
6
85°
66°
7
N/A
8
85°
59°
9
87°
67°
10
91°
71°
11
84°
68°
12
83°
70°
13
86°
71°
14
85°
71°
15
87°
72°
16
86°
65°
17
78°
67°
18
79°
65°
19
78°
64°
20
79°
62°
21
82°
66°
22
81°
66°
23
76°
65°
24
76°
65°
25
77°
64°
26
80°
65°
27
80°
64°
28
79°
64°
29
80°
63°
30
79°
63°
1
79°
62°
2
78°
63°
3
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Suffolk
Suffolk's September 2026 forecast shows daily high temperatures ranging from 76° to 91°, with overnight lows between 59° and 72°. The average high for September is 81° with an average low of 66°. 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 Suffolk. See also: October | November | December.
