S
M
T
W
T
F
S
30
73°
61°
31
72°
59°
1
70°
54°
2
77°
52°
3
77°
61°
4
75°
61°
5
72°
55°
6
84°
52°
7
77°
63°
8
66°
55°
9
66°
54°
10
68°
54°
11
70°
55°
12
75°
52°
13
79°
55°
14
79°
61°
15
73°
57°
16
68°
54°
17
66°
52°
18
68°
52°
19
73°
52°
20
70°
57°
21
72°
54°
22
75°
50°
23
75°
50°
24
75°
52°
25
76°
53°
26
70°
55°
27
72°
58°
28
67°
59°
29
82°
65°
30
74°
54°
1
69°
52°
2
68°
49°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint-Lô
Saint-Lô's September 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 49° and 65°. The average high for September is 72° with an average low of 55°. 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 Saint-Lô. See also: October | November | December.
