17.09
thu
thu
Day
66°F
SW 3 mph
Precip.
23%
23%
Night
64°F
SW 4 mph
Precip.
14%
14%
18.09
fri
fri
Day
64°F
W 15 mph
Precip.
13%
13%
Night
63°F
W 16 mph
Precip.
10%
10%
19.09
sat
sat
Day
72°F
NE 8 mph
Precip.
30%
30%
Night
63°F
S 11 mph
Precip.
43%
43%
20.09
sun
sun
Day
61°F
SW 14 mph
Precip.
42%
42%
Night
61°F
W 12 mph
Precip.
19%
19%
21.09
mon
mon
Day
54°F
W 14 mph
Precip.
78%
78%
Night
59°F
E 9 mph
Precip.
33%
33%
22.09
tue
tue
Day
59°F
E 11 mph
Precip.
27%
27%
Night
57°F
E 5 mph
Precip.
25%
25%
23.09
wed
wed
Day
64°F
N 13 mph
Precip.
22%
22%
Night
55°F
E 15 mph
Precip.
6%
6%
sea water
temperature
temperature
| Milwaukee |
monthly
weather
weather
| Milwaukee |
current
weather
weather
| Milwaukee |
14 days
forecast
forecast
| Milwaukee |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 65.5°F. The highest and lowest sea temperatures during the month were 68.9°F and 57.6°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 60.4°F. The highest and lowest sea temperatures during the month were 67.6°F and 53.1°F.
Air temperature in Milwaukee, °F
Precipitation total in Milwaukee, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Milwaukee
Milwaukee on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Milwaukee
Local time: 03:23
September 17, thursday
0600
63°F
S
4 mph
4 mph
0900
63°F
SW
2 mph
2 mph
1200
66°F
SW
3 mph
3 mph
1500
66°F
W
2 mph
2 mph
1800
66°F
SW
2 mph
2 mph
2100
66°F
SW
4 mph
4 mph
September 18, friday
0000
64°F
SW
4 mph
4 mph
0300
64°F
SW
7 mph
7 mph
