S
M
T
W
T
F
S
30
97°
68°
31
95°
70°
1
94°
73°
2
90°
72°
3
97°
71°
4
94°
72°
5
96°
72°
6
94°
71°
7
97°
72°
8
95°
71°
9
94°
71°
10
95°
71°
11
91°
73°
12
93°
72°
13
92°
71°
14
93°
72°
15
92°
72°
16
94°
70°
17
93°
69°
18
91°
68°
19
89°
62°
20
87°
61°
21
87°
62°
22
86°
64°
23
87°
64°
24
86°
63°
25
88°
67°
26
88°
67°
27
87°
66°
28
88°
65°
29
87°
66°
30
87°
66°
1
86°
65°
2
86°
64°
3
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poland
Poland's September 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 61° and 73°. The average high for September is 89° with an average low of 67°. 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 Poland. See also: October | November | December.
