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Northern Indiana Local Forecast Office

9NM WSW Saint Joseph MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 70 °F
SSW 15kt
1ft
Monday
High: 76 °F
WSW 10kt
< 1ft
Monday Night
Low: 70 °F
Light Wind
< 1ft
Tuesday
High: 78 °F
Light Wind
< 1ft
Tuesday Night
Low: 71 °F
Light Wind
< 1ft
Wednesday
High: 76 °F
WNW 10kt
< 1ft
Wednesday Night
Low: 69 °F
Light Wind
< 1ft
Thursday
High: 73 °F
N 10kt
< 1ft
Thursday Night
Low: 64 °F
N 10kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:04 pm CDT Aug 9, 2026
Forecast Valid: 10pm CDT Aug 9, 2026-6pm CDT Aug 16, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 10 to 15 kt. Showers and thunderstorms, mainly before 5am. Waves around 1 ft.

Monday

WSW wind 5 to 10 kt becoming NNW in the afternoon. A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Wednesday

WNW wind 5 to 10 kt becoming N in the afternoon. A chance of showers and thunderstorms, mainly after 1pm. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A slight chance of showers before 1am. Waves 1 ft or less.

Thursday

NE wind 5 to 10 kt becoming N in the afternoon. Partly sunny. Waves 1 ft or less.

Thursday Night

N wind 5 to 10 kt becoming ENE after midnight. Mostly cloudy. Waves around 1 ft.

Winds and waves higher in and near thunderstorms.

The water temperature at St. Joseph is 70 degrees and at Michigan
City is 67 degrees.

*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.