S
M
T
W
T
F
S
30
86°
69°
31
94°
67°
1
96°
72°
2
99°
73°
3
98°
73°
4
96°
73°
5
96°
70°
6
84°
66°
7
87°
63°
8
86°
58°
9
89°
58°
10
92°
64°
11
97°
70°
12
91°
70°
13
91°
72°
14
93°
69°
15
84°
63°
16
87°
57°
17
92°
59°
18
95°
69°
19
88°
68°
20
90°
64°
21
94°
66°
22
86°
66°
23
69°
63°
24
66°
60°
25
74°
50°
26
80°
46°
27
N/A
28
82°
53°
29
83°
58°
30
87°
58°
1
87°
57°
2
91°
61°
3
76°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Smithfield
Smithfield's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.