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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 85 °F
SE 8kt
< 1ft
Tonight
Low: 74 °F
SW 9kt
< 1ft
Saturday
High: 88 °F
WSW 16kt
< 1ft
Saturday Night
Low: 66 °F
NW 11kt
< 1ft
Sunday
High: 77 °F
N 7kt
< 1ft
Sunday Night
Low: 65 °F
SE 6kt⇓
< 1ft
Monday
High: 82 °F
⇑SSW 8kt
< 1ft
Monday Night
Low: 71 °F
SW 13kt
< 1ft
Tuesday
High: 83 °F
SW 16kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 pm EDT Jul 17, 2026
Forecast Valid: 5pm EDT Jul 17, 2026-6pm EDT Jul 24, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SE wind around 8 kt. A chance of showers and thunderstorms. Widespread smoke. Waves 1 ft or less.

Tonight

SE wind 6 to 9 kt becoming SW after midnight. A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 2am. Widespread smoke, mainly before 9pm. Waves 1 ft or less.

Saturday

WSW wind 11 to 16 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Waves 1 ft or less.

Saturday Night

NW wind 8 to 11 kt becoming NNE after midnight. Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm. Patchy smoke after 4am. Waves 1 ft or less.

Sunday

N wind around 7 kt becoming E in the afternoon. Patchy smoke before 8am. Waves 1 ft or less.

Sunday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

Monday

Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Mostly sunny. Waves 1 ft or less.

Monday Night

SW wind 8 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Waves 1 ft or less.

Tuesday

SW wind around 16 kt. Showers and possibly a thunderstorm. Waves 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.