S
M
T
W
T
F
S
30
91°
66°
31
88°
67°
1
87°
66°
2
82°
64°
3
80°
59°
4
81°
60°
5
83°
63°
6
79°
60°
7
78°
55°
8
78°
55°
9
79°
56°
10
81°
58°
11
82°
56°
12
83°
54°
13
84°
56°
14
79°
57°
15
75°
56°
16
76°
52°
17
75°
55°
18
79°
57°
19
77°
58°
20
76°
53°
21
75°
54°
22
78°
61°
23
80°
62°
24
78°
55°
25
77°
55°
26
77°
54°
27
78°
56°
28
79°
53°
29
76°
49°
30
70°
59°
1
73°
54°
2
70°
51°
3
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smith Salt Lake
Smith Salt Lake's September 2026 forecast shows daily high temperatures ranging from 66° to 91°, with overnight lows between 48° and 67°. The average high for September is 79° with an average low of 57°. 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 Smith Salt Lake. See also: October | November | December.
