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Knappa, OR - Knappa Slough Marine Weather Forecast

Tonight - 58°F
Jul 26, 2026
6 mph S
Mostly Cloudy
Mostly cloudy, with a low around 58. South wind around 6 mph.
Sunday - 62°F
Jul 26, 2026
5 to 12 mph SW
Mostly Cloudy
Mostly cloudy, with a high near 62. Southwest wind 5 to 12 mph.
Sunday Night - 57°F
Jul 26, 2026
2 to 9 mph SSW
Mostly Cloudy
Mostly cloudy, with a low around 57. South southwest wind 2 to 9 mph.
Monday - 65°F
Jul 27, 2026
3 to 14 mph SSW
Mostly Sunny
Mostly sunny, with a high near 65. South southwest wind 3 to 14 mph.
Monday Night - 57°F
Jul 27, 2026
3 to 14 mph SSW
Partly Cloudy then Slight Chance Light Rain
A slight chance of rain after 5am. Partly cloudy, with a low around 57. South southwest wind 3 to 14 mph. Chance of precipitation is 20%.
Tuesday - 63°F
Jul 28, 2026
6 to 13 mph SW
Chance Light Rain
A chance of rain before 5pm. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.
Tuesday Night - 56°F
Jul 28, 2026
1 to 12 mph WNW
Mostly Cloudy
Mostly cloudy, with a low around 56.
Wednesday - 64°F
Jul 29, 2026
1 to 15 mph NW
Mostly Sunny
Mostly sunny, with a high near 64.
Wednesday Night - 54°F
Jul 29, 2026
1 to 15 mph WNW
Mostly Clear
Mostly clear, with a low around 54.
Thursday - 65°F
Jul 30, 2026
1 to 14 mph NW
Sunny
Sunny, with a high near 65.
Thursday Night - 55°F
Jul 30, 2026
2 to 14 mph WNW
Mostly Clear
Mostly clear, with a low around 55.
Friday - 66°F
Jul 31, 2026
2 to 14 mph WNW
Mostly Sunny
Mostly sunny, with a high near 66.
Friday Night - 57°F
Jul 31, 2026
5 to 14 mph W
Partly Cloudy
Partly cloudy, with a low around 57.
Saturday - 64°F
Aug 01, 2026
5 to 16 mph W
Partly Sunny
Partly sunny, with a high near 64.

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