Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM WSW Islamorada FL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 77 °F
Light Wind
< 1ft
Tonight
Low: 65 °F
NW 10kt
< 1ft
Thursday
High: 75 °F
NNW 10kt
< 1ft
Thursday Night
Low: 67 °F
Light Wind
< 1ft
Friday
High: 76 °F
E 10kt
< 1ft
Friday Night
Low: 72 °F
E 10kt
< 1ft
Saturday
High: 78 °F
E 10kt
< 1ft
Saturday Night
Low: 72 °F
ENE 10kt
< 1ft
Sunday
High: 78 °F
NE 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:15 pm CST Dec 10, 2025
Forecast Valid: 3pm CST Dec 10, 2025-6pm CST Dec 16, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. A slight chance of showers. Seas 1 ft or less.

Tonight

NW wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

Thursday

NNW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Friday

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

Friday Night

E wind around 10 kt. A slight chance of showers. Seas 1 ft or less.

Saturday

E wind around 10 kt. A slight chance of showers. Seas 1 ft or less.

Saturday Night

ENE wind around 10 kt. A chance of showers. Seas 1 ft or less.

Sunday

NE wind around 10 kt. A chance of showers. 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.