S
M
T
W
T
F
S
30
81°
54°
31
83°
53°
1
82°
49°
2
84°
43°
3
79°
44°
4
77°
45°
5
79°
49°
6
84°
47°
7
78°
43°
8
76°
48°
9
78°
50°
10
Hist. Avg.
80°
46°
11
Hist. Avg.
80°
46°
12
Hist. Avg.
79°
46°
13
Hist. Avg.
79°
45°
14
Hist. Avg.
78°
45°
15
Hist. Avg.
78°
44°
16
Hist. Avg.
78°
44°
17
Hist. Avg.
77°
44°
18
Hist. Avg.
77°
43°
19
Hist. Avg.
76°
43°
20
Hist. Avg.
76°
43°
21
Hist. Avg.
75°
42°
22
Hist. Avg.
75°
42°
23
Hist. Avg.
74°
42°
24
Hist. Avg.
74°
41°
25
Hist. Avg.
74°
41°
26
Hist. Avg.
73°
40°
27
Hist. Avg.
72°
40°
28
Hist. Avg.
72°
40°
29
Hist. Avg.
72°
39°
30
Hist. Avg.
71°
39°
1
Hist. Avg.
71°
38°
2
Hist. Avg.
70°
38°
3
Hist. Avg.
70°
38°
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 76° to 84°, with overnight lows between 43° and 54°. The average high for September is 80° with an average low of 48°. 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.