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Sumner Island, AK Marine Weather Forecast

Station CDEA2 - Cape Decision, AK

July 2, 2026 2:22 pm AKDT
Location: 56.001N 134.136W
Wind Direction: W (270°)
Wind Speed: 14.0 knots
Wind Gust: 15.0 knots
Atmospheric Pressure: 29.89 in (1012.3 mb)
Air Temperature: 54.1°F (12.3°C)
Dew Point: 44.1°F (6.7°C)


Today - 56°F
Jul 02, 2026
10 mph SW
Mostly Sunny
Mostly sunny, with a high near 56. Southwest wind around 10 mph.
Tonight - 49°F
Jul 02, 2026
5 to 10 mph SW
Mostly Cloudy then Light Rain
Rain after 1am. Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday - 55°F
Jul 03, 2026
10 to 15 mph S
Light Rain
Rain. Cloudy, with a high near 55. South wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night - 49°F
Jul 03, 2026
5 to 10 mph SE
Light Rain
Rain. Cloudy, with a low around 49. Southeast wind 5 to 10 mph. Chance of precipitation is 100%.
Independence Day - 58°F
Jul 04, 2026
0 to 5 mph E
Chance Light Rain then Mostly Cloudy
A chance of rain before 10am. Mostly cloudy, with a high near 58. East wind 0 to 5 mph. Chance of precipitation is 40%.
Saturday Night - 50°F
Jul 04, 2026
5 mph SW
Slight Chance Light Rain
A slight chance of rain between 10pm and 4am, then a chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Sunday - 57°F
Jul 05, 2026
5 to 10 mph S
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 57.
Sunday Night - 50°F
Jul 05, 2026
10 mph S
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 50.
Monday - 58°F
Jul 06, 2026
10 mph SE
Rain Showers
Rain showers. Cloudy, with a high near 58.
Monday Night - 50°F
Jul 06, 2026
10 mph SE
Rain Showers
Rain showers. Cloudy, with a low around 50.
Tuesday - 58°F
Jul 07, 2026
10 to 15 mph SE
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a high near 58.
Tuesday Night - 50°F
Jul 07, 2026
10 mph S
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 50.
Wednesday - 58°F
Jul 08, 2026
10 mph S
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 58.
Wednesday Night - 50°F
Jul 08, 2026
5 to 10 mph SW
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 50.

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