S
M
T
W
T
F
S
30
89°
70°
31
90°
70°
1
89°
69°
2
89°
68°
3
83°
65°
4
83°
65°
5
84°
63°
6
82°
63°
7
88°
68°
8
88°
68°
9
87°
69°
10
89°
70°
11
90°
70°
12
90°
69°
13
89°
69°
14
87°
67°
15
88°
66°
16
87°
61°
17
81°
64°
18
86°
65°
19
87°
65°
20
86°
64°
21
85°
65°
22
86°
64°
23
82°
63°
24
79°
64°
25
81°
63°
26
84°
63°
27
84°
62°
28
83°
63°
29
83°
62°
30
82°
61°
1
83°
61°
2
83°
56°
3
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smithfield
Smithfield's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 52° and 70°. The average high for September is 85° 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 Smithfield. See also: October | November | December.
