S
M
T
W
T
F
S
30
82°
61°
31
N/A
1
90°
69°
2
92°
70°
3
91°
68°
4
87°
65°
5
78°
60°
6
78°
60°
7
77°
57°
8
73°
59°
9
79°
60°
10
76°
58°
11
76°
54°
12
76°
58°
13
78°
58°
14
78°
59°
15
78°
58°
16
77°
58°
17
77°
57°
18
72°
54°
19
76°
57°
20
79°
58°
21
79°
58°
22
78°
57°
23
79°
57°
24
78°
56°
25
77°
55°
26
76°
54°
27
77°
55°
28
76°
54°
29
75°
53°
30
74°
52°
1
73°
52°
2
74°
53°
3
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Baltic
Baltic's September 2026 forecast shows daily high temperatures ranging from 72° to 92°, with overnight lows between 52° and 70°. The average high for September is 78° with an average low of 58°. 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.