Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

For More Weather Information:

Miami - South Florida Local Forecast Office

Key Biscayne FL

Marine Point Forecast

[NOTICE]

Friday
High: 87 °F
E 7kt
1ft
Friday Night
Low: 81 °F
Light Wind
1ft
Saturday
High: 87 °F
Light Wind
1ft
Saturday Night
Low: 80 °F
Light Wind
1ft
Sunday
High: 87 °F
⇑S 6kt
1ft
Sunday Night
Low: 79 °F
Light Wind
1ft
Monday
High: 88 °F
⇑S 8kt
1ft
Monday Night
Low: 80 °F
S 7kt
1ft
Tuesday
High: 88 °F
SSE 7kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:17 pm EDT Sep 17, 2026
Forecast Valid: 1am EDT Sep 18, 2026-6pm EDT Sep 24, 2026

View Nearby Observations

Detailed Forecast

Friday

NNE wind around 7 kt becoming E in the afternoon. Showers and thunderstorms likely, mainly after 3pm. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth.

Saturday

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 2pm, then showers and possibly a thunderstorm after 2pm. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth.

Saturday Night

Variable winds 5 kt or less. Showers and possibly a thunderstorm, mainly before 2am, then a slight chance of showers and thunderstorms after 2am. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth.

Sunday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Showers and thunderstorms, mainly after 2pm. Seas around 1 ft. Intracoastal waters smooth.

Sunday Night

Variable winds 5 kt or less. Showers and thunderstorms, mainly before 2am. Seas around 1 ft. Intracoastal waters smooth.

Monday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Seas around 1 ft. Intracoastal waters smooth.

Monday Night

S wind around 7 kt. Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Seas around 1 ft. Intracoastal waters smooth.

Tuesday

SSE wind around 7 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Seas around 1 ft. Intracoastal waters smooth.

Winds and seas higher in and near tstms.

*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.