19.09
sat
sat
Day
41°F
NW 5 mph
Precip.
67%
67%
Night
43°F
W 6 mph
Precip.
84%
84%
20.09
sun
sun
Day
39°F
NW 6 mph
Precip.
81%
81%
Night
37°F
N 6 mph
Precip.
70%
70%
21.09
mon
mon
Day
39°F
N 6 mph
Precip.
81%
81%
Night
34°F
W 5 mph
Precip.
20%
20%
22.09
tue
tue
Day
37°F
W 6 mph
Precip.
30%
30%
Night
36°F
W 9 mph
Precip.
28%
28%
23.09
wed
wed
Day
37°F
W 4 mph
Precip.
30%
30%
Night
32°F
SW 6 mph
Precip.
28%
28%
24.09
thu
thu
Day
37°F
SW 1 mph
Precip.
11%
11%
Night
30°F
SW 7 mph
Precip.
17%
17%
25.09
fri
fri
Day
37°F
W 5 mph
Precip.
14%
14%
Night
36°F
SW 7 mph
Precip.
38%
38%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 52.7°F. The highest and lowest sea temperatures during the month were 54.3°F and 51.4°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 46.7°F. The highest and lowest sea temperatures during the month were 49.3°F and 44.6°F.
Air temperature in Juneau, °F
Precipitation total in Juneau, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Juneau
Juneau on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Juneau
Local time: 01:21
September 19, saturday
0300
43°F
N
5 mph
5 mph
0600
39°F
NW
5 mph
5 mph
0900
41°F
NW
5 mph
5 mph
1200
41°F
NW
5 mph
5 mph
1500
41°F
W
7 mph
7 mph
1800
43°F
NW
6 mph
6 mph
2100
43°F
W
6 mph
6 mph
September 20, sunday
0000
43°F
W
6 mph
6 mph
