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°
52°
14
76°
50°
15
86°
58°
16
87°
57°
17
86°
52°
18
80°
47°
19
82°
50°
20
81°
49°
21
80°
50°
22
80°
51°
23
78°
49°
24
79°
49°
25
78°
48°
26
76°
43°
27
76°
46°
28
71°
38°
29
66°
35°
30
69°
39°
1
72°
38°
2
76°
46°
3
71°
36°
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 66° to 90°, with overnight lows between 35° and 58°. The average high for September is 78° with an average low of 47°. 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.
