⛈ Boating Conditions
⛈ 7-Day Forecast
St. Catherines
📊 Source:
National Weather Service
— weather.gov
For informational purposes only — verify conditions before departure.
Forecast retrieved August 07, 2026 12:42 PM
Today
89°F
Wind: 3 to 10 mph E
Gusts: —
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. East wind 3 to 10 mph. Chance of precipitation is 20%.
💧 17% precip.
Tonight
76°F
Wind: 3 to 10 mph SE
Gusts: —
A chance of showers and thunderstorms before 4am, then showers and thunderstorms likely. Partly cloudy, with a low around 76. Southeast wind 3 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
💧 58% precip.
Saturday
87°F
Wind: 2 to 7 mph SE
Gusts: —
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Southeast wind 2 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
💧 71% precip.
Saturday Night
77°F
Wind: 2 to 7 mph S
Gusts: —
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. South wind 2 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
💧 37% precip.
Sunday
90°F
Wind: 2 to 8 mph S
Gusts: —
A chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 11am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. South wind 2 to 8 mph. Chance of precipitation is 40%.
💧 37% precip.
Sunday Night
77°F
Wind: 3 to 8 mph S
Gusts: —
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
💧 33% precip.
Monday
91°F
Wind: 2 to 9 mph S
Gusts: —
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
💧 35% precip.
Monday Night
78°F
Wind: 5 to 9 mph S
Gusts: —
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Chance of precipitation is 40%.
💧 35% precip.
Tuesday
93°F
Wind: 5 to 9 mph SW
Gusts: —
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
💧 17% precip.
Tuesday Night
78°F
Wind: 6 to 9 mph SW
Gusts: —
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Chance of precipitation is 20%.
💧 17% precip.
Wednesday
94°F
Wind: 6 to 9 mph SW
Gusts: —
Sunny, with a high near 94.
💧 14% precip.
Wednesday Night
78°F
Wind: 9 mph SW
Gusts: —
Mostly clear, with a low around 78.
💧 14% precip.
Thursday
93°F
Wind: 7 to 10 mph SW
Gusts: —
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Chance of precipitation is 20%.
💧 16% precip.
Thursday Night
79°F
Wind: 6 to 10 mph SW
Gusts: —
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 79. Chance of precipitation is 20%.
💧 16% precip.