Record Heat Remains in Place This Week; Severe Thunderstorms Possible Thursday

Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and return back to areas of the central/southern Plains and mid-lower Mississippi Valley this week. Over 200 new record high temperatures are forecast. Severe thunderstorms are being outlooked on Thursday over the Midwest. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

Boot Key Harbor FL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 79 °F
Light Wind
< 1ft
Tonight
Low: 68 °F
Light Wind
< 1ft
Tuesday
High: 79 °F
Light Wind
< 1ft
Tuesday Night
Low: 69 °F
Light Wind
< 1ft
Wednesday
High: 79 °F
Light Wind
< 1ft
Wednesday Night
Low: 70 °F
NE 10kt
< 1ft
Thursday
High: 79 °F
NE 10kt
< 1ft
Thursday Night
Low: 71 °F
ENE 10kt
< 1ft
Friday
High: 80 °F
ENE 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:15 pm CDT Mar 23, 2026
Forecast Valid: 2pm CDT Mar 23, 2026-6pm CDT Mar 29, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Wednesday Night

NE wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Thursday

NE wind 5 to 10 kt. Sunny. Seas 1 ft or less.

Thursday Night

ENE wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Friday

ENE wind around 10 kt. Sunny. 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.