S
M
T
W
T
F
S
30
90°
67°
31
91°
67°
1
87°
66°
2
90°
66°
3
89°
59°
4
85°
58°
5
81°
58°
6
82°
64°
7
86°
62°
8
89°
65°
9
84°
64°
10
87°
65°
11
87°
64°
12
86°
63°
13
87°
61°
14
86°
62°
15
88°
64°
16
88°
64°
17
Hist. Avg.
82°
57°
18
Hist. Avg.
81°
57°
19
Hist. Avg.
81°
56°
20
Hist. Avg.
80°
56°
21
Hist. Avg.
80°
55°
22
Hist. Avg.
79°
55°
23
Hist. Avg.
79°
54°
24
Hist. Avg.
78°
54°
25
Hist. Avg.
78°
54°
26
Hist. Avg.
77°
53°
27
Hist. Avg.
77°
53°
28
Hist. Avg.
76°
52°
29
Hist. Avg.
76°
52°
30
Hist. Avg.
75°
51°
1
Hist. Avg.
75°
51°
2
Hist. Avg.
74°
50°
3
Hist. Avg.
74°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lehigh
Lehigh's September 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 58° and 67°. The average high for September is 87° with an average low of 63°. 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 Lehigh. See also: October | November | December.
