S
M
T
W
T
F
S
30
82°
59°
31
84°
60°
1
84°
57°
2
84°
66°
3
86°
63°
4
89°
64°
5
89°
67°
6
85°
64°
7
78°
63°
8
84°
57°
9
87°
58°
10
85°
56°
11
90°
64°
12
92°
64°
13
90°
70°
14
74°
56°
15
85°
52°
16
85°
61°
17
85°
71°
18
81°
58°
19
71°
54°
20
74°
50°
21
80°
54°
22
73°
56°
23
76°
52°
24
80°
53°
25
83°
56°
26
82°
55°
27
82°
60°
28
71°
54°
29
72°
54°
30
76°
49°
1
78°
51°
2
84°
53°
3
84°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lehi
Lehi'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 Lehi. See also: October | November | December.