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Northern Indiana Local Forecast Office

9NM WSW Saint Joseph MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 78 °F
Light Wind
< 1ft
Tonight
Low: 70 °F
WSW 10kt
< 1ft
Saturday
High: 74 °F
NNW 20kt
2-4ft

Small Craft Advisory
Saturday Night
Low: 68 °F
NNW 15kt
3ft

Small Craft Advisory
Sunday
High: 70 °F
NNW 20kt
3-5ft
Sunday Night
Low: 63 °F
NNE 10kt
2-4ft
Monday
High: 71 °F
Light Wind
1ft
Monday Night
Low: 64 °F
Light Wind
< 1ft
Tuesday
High: 75 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:46 pm CDT Aug 21, 2026
Forecast Valid: 5pm CDT Aug 21, 2026-6pm CDT Aug 28, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

S wind 5 to 10 kt becoming WSW after midnight. A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Waves 1 ft or less.

Saturday

NNW wind 15 to 20 kt, with gusts as high as 25 kt. A slight chance of showers and thunderstorms before 10am. Waves 2 to 4 ft.

Saturday Night

NNW wind around 15 kt. A slight chance of showers after 11pm. Waves around 3 ft.

Sunday

NNW wind 15 to 20 kt. Sunny. Waves 3 to 5 ft.

Sunday Night

NNE wind 5 to 10 kt. Mostly clear. Waves 2 to 4 ft.

Monday

Variable winds 5 kt or less. Sunny. Waves around 1 ft.

Monday Night

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

Tuesday

Variable winds 5 kt or less. Mostly sunny. 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.