Nor'easter Bringing Dangerous Coastal Conditions to the Mid-Atlantic; Pacific Storm to Impact the Southwest U.S.

A Nor'easter well off the East Coast will slowly track north this week and may gain some subtropical characteristics. Strong onshore winds will bring flooding, dangerous marine conditions, and beach erosion along the Mid-Atlantic coast. A Pacific storm will bring gusty winds, severe thunderstorms, and mountain snow to portions of California and the Southwest U.S. through Thursday. Read More >

Hazardous Weather Conditions

Small Craft Advisory until October 21, 05:00 AM CDT

For More Weather Information:

Key West, FL Local Forecast Office

Key West Harbor FL

Marine Point Forecast

[NOTICE]

Wednesday
High: 84 °F
NE 15kt
< 1ft
Wednesday Night
Low: 75 °F
NE 10kt
< 1ft
Thursday
High: 83 °F
NE 10kt
< 1ft
Thursday Night
Low: 75 °F
NNE 15kt
< 1ft
Friday
High: 83 °F
NE 15kt
< 1ft
Friday Night
Low: 74 °F
NE 15kt
< 1ft
Saturday
High: 83 °F
NE 15kt
< 1ft
Saturday Night
Low: 76 °F
NE 25kt
< 1ft
Sunday
High: 83 °F
NE 30kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:24 am CDT Oct 21, 2026
Forecast Valid: 1am CDT Oct 21, 2026-6pm CDT Oct 27, 2026

View Nearby Observations

Detailed Forecast

Wednesday

NE wind 10 to 15 kt. A slight chance of showers before 7am. Seas 1 ft or less.

Wednesday Night

NE wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Thursday

NE wind around 10 kt. Sunny. Seas 1 ft or less.

Thursday Night

NNE wind 10 to 15 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Friday

NE wind 10 to 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Friday Night

NE wind around 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday

NE wind around 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday Night

NE wind 20 to 25 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Sunday

NE wind 25 to 30 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.