Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Hazardous Weather Conditions

Short Term Forecast

For More Weather Information:

Key West, FL Local Forecast Office

6NM NNW Marathon FL

Marine Point Forecast

[NOTICE]

Sunday
High: 90 °F
ESE 15kt
1ft
Sunday Night
Low: 83 °F
E 10kt
1ft
Monday
High: 90 °F
E 10kt
< 1ft
Monday Night
Low: 83 °F
E 10kt
1ft
Tuesday
High: 89 °F
ESE 10kt
< 1ft
Tuesday Night
Low: 84 °F
E 15kt
1ft
Wednesday
High: 90 °F
E 10kt
1ft
Wednesday Night
Low: 83 °F
ENE 15kt
1ft
Thursday
High: 89 °F
ESE 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:23 am CDT Aug 30, 2026
Forecast Valid: 1am CDT Aug 30, 2026-6pm CDT Sep 5, 2026

View Nearby Observations

Detailed Forecast

Sunday

ESE wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Sunday Night

E wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Monday

E wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday Night

E wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Tuesday

ESE wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday Night

E wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday

E wind around 10 kt. Showers likely and possibly a thunderstorm. Seas around 1 ft.

Wednesday Night

ENE wind around 15 kt. Showers and thunderstorms likely. Seas around 1 ft.

Thursday

ESE wind around 10 kt. Showers and thunderstorms likely. Seas around 1 ft.

*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.