S
M
T
W
T
F
S
30
81°
53°
31
80°
51°
1
81°
53°
2
80°
57°
3
81°
58°
4
81°
57°
5
74°
57°
6
75°
56°
7
79°
56°
8
80°
57°
9
79°
56°
10
79°
56°
11
78°
57°
12
77°
56°
13
78°
55°
14
71°
50°
15
72°
49°
16
72°
56°
17
76°
52°
18
69°
55°
19
70°
50°
20
70°
46°
21
69°
51°
22
Hist. Avg.
70°
51°
23
Hist. Avg.
70°
51°
24
Hist. Avg.
70°
51°
25
Hist. Avg.
69°
50°
26
Hist. Avg.
69°
50°
27
Hist. Avg.
68°
50°
28
Hist. Avg.
68°
50°
29
Hist. Avg.
68°
49°
30
Hist. Avg.
67°
49°
1
Hist. Avg.
67°
49°
2
Hist. Avg.
66°
48°
3
Hist. Avg.
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lyon
Lyon's September 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 46° and 58°. The average high for September is 76° with an average low of 54°. 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 Lyon. See also: October | November | December.
