S
M
T
W
T
F
S
30
82°
54°
31
72°
53°
1
73°
51°
2
71°
51°
3
70°
56°
4
73°
57°
5
78°
52°
6
70°
53°
7
69°
48°
8
Hist. Avg.
71°
47°
9
Hist. Avg.
71°
47°
10
Hist. Avg.
70°
46°
11
Hist. Avg.
70°
46°
12
Hist. Avg.
70°
46°
13
Hist. Avg.
69°
45°
14
Hist. Avg.
69°
45°
15
Hist. Avg.
69°
45°
16
Hist. Avg.
68°
44°
17
Hist. Avg.
68°
44°
18
Hist. Avg.
67°
44°
19
Hist. Avg.
67°
43°
20
Hist. Avg.
67°
43°
21
Hist. Avg.
66°
43°
22
Hist. Avg.
66°
42°
23
Hist. Avg.
65°
42°
24
Hist. Avg.
65°
42°
25
Hist. Avg.
64°
41°
26
Hist. Avg.
64°
41°
27
Hist. Avg.
64°
40°
28
Hist. Avg.
63°
40°
29
Hist. Avg.
63°
40°
30
Hist. Avg.
62°
39°
1
Hist. Avg.
62°
39°
2
Hist. Avg.
61°
39°
3
Hist. Avg.
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lewis
Lewis's September 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 48° and 57°. The average high for September is 73° with an average low of 53°. 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 Lewis. See also: October | November | December.
