S
M
T
W
T
F
S
30
81°
55°
31
78°
52°
1
75°
53°
2
76°
53°
3
75°
54°
4
76°
53°
5
73°
54°
6
74°
56°
7
73°
58°
8
79°
54°
9
74°
52°
10
73°
51°
11
74°
51°
12
73°
54°
13
72°
53°
14
71°
52°
15
72°
56°
16
72°
49°
17
75°
50°
18
73°
50°
19
70°
56°
20
77°
54°
21
Hist. Avg.
74°
51°
22
Hist. Avg.
73°
50°
23
Hist. Avg.
73°
50°
24
Hist. Avg.
73°
49°
25
Hist. Avg.
72°
49°
26
Hist. Avg.
72°
49°
27
Hist. Avg.
71°
48°
28
Hist. Avg.
71°
48°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
70°
47°
1
Hist. Avg.
70°
46°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Baltic
Baltic's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 49° and 58°. The average high for September is 74° 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 Baltic. See also: October | November | December.