About John's Boat Harbor
Located at 2407 Hwy C, St Charles, MO 63301, United States Member only Marina on the Mississppi River Upper Mississippi River Mile Marker 231.8



Installations
COORDINATES
38.87821 N, -90.62325 E
Port Information
Téléphone
Berth Sizes
< 10m, 10-20m
Profondeur à la marée basse moyenne
< 2m
Manœuvrabilité
Fair
Channel Marking
Fair
Port d'entrée
No
Overseas Visitor Berths
Yes
Type de quai
Floating
Style Side To
Yes
Tidal Flow
Beware
Active Winter
Yes
Weather Forecast
Tue
5AM - 9AM
17 February 2026
- S 5 knots increasing to 7 knots.
- 5 to 8°C
- UV Index: 0 - Low
- Cloudy
Tue
9AM - 1PM
17 February 2026
- SE 7–9 knots.
- Increasing from 9 to 14°C
- UV Index: 1 - Low
- Cloudy
Tue
1PM - 5PM
17 February 2026
- S 7–10 knots. Gusts up to 20 knots.
- 14°C
- UV Index: 0 - Low
- Cloudy