S
M
T
W
T
F
S
30
77°
67°
31
75°
59°
1
74°
57°
2
72°
57°
3
72°
65°
4
76°
63°
5
73°
63°
6
75°
65°
7
72°
67°
8
72°
57°
9
71°
55°
10
81°
52°
11
70°
55°
12
58°
46°
13
62°
42°
14
58°
46°
15
57°
42°
16
53°
40°
17
59°
45°
18
62°
50°
19
62°
57°
20
60°
42°
21
67°
43°
22
66°
50°
23
68°
55°
24
69°
55°
25
70°
57°
26
68°
52°
27
65°
51°
28
63°
46°
29
64°
49°
30
65°
48°
1
64°
48°
2
58°
36°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Libau
Libau's September 2026 forecast shows daily high temperatures ranging from 58° to 70°, with overnight lows between 36° and 57°. The average high for September is 65° with an average low of 48°. 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 Libau. See also: October | November | December.