St. Catharines Weather Forecast
14 Day API Weather Forecast. Note: Our 7 day
St. Catharines weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
St. Catharines, ON Weather Forecast Dated: 1051 AM Mon May 29 2023 (St. Catharines Time)
Mon, 29th

Lo: 14°C57°F Hi: 22°C71°F |
Sunny Monday, temperatures as high as 22°C71°F, low temperature around 14°C57°F, wind out of the ESE 28 km/h17 mph. Barometric pressure 1017 mb30.03 in, visibility 10 km6 mi, humidity 68%, uv index 5. |
Tue, 30th

Lo: 14°C56°F Hi: 21°C70°F |
Sunny Tuesday, temperatures as high as 21°C70°F, low temperature around 14°C56°F, wind out of the ESE 17 km/h11 mph. Barometric pressure 1019 mb30.09 in, visibility 10 km6 mi, humidity 75%, uv index 5. |
Wed, 31st

Lo: 15°C60°F Hi: 25°C77°F |
Sunny Wednesday, temperatures as high as 25°C77°F, low temperature around 15°C60°F, wind out of the SE 17 km/h11 mph. Barometric pressure 1020 mb30.12 in, visibility 10 km6 mi, humidity 72%, uv index 5. |
Thu, 1st

Lo: 15°C59°F Hi: 25°C76°F |
Sunny Thursday, temperatures as high as 25°C76°F, low temperature around 15°C59°F, wind out of the SE 14 km/h9 mph. Barometric pressure 1021 mb30.15 in, visibility 10 km6 mi, humidity 70%, uv index 5. |
Fri, 2nd

Lo: 16°C60°F Hi: 24°C75°F |
Partly cloudy Friday, temperatures as high as 24°C75°F, low temperature around 16°C60°F, wind out of the SE 8 km/h5 mph. Barometric pressure 1020 mb30.12 in, visibility 10 km6 mi, humidity 68%, uv index 5. |
Sat, 3rd

Lo: 16°C62°F Hi: 23°C74°F |
Sunny Saturday, temperatures as high as 23°C74°F, low temperature around 16°C62°F, wind out of the ENE 29 km/h18 mph. Barometric pressure 1021 mb30.15 in, visibility 10 km6 mi, humidity 81%, uv index 5. |
Sun, 4th

Lo: 14°C58°F Hi: 22°C72°F |
Sunny Sunday, temperatures as high as 22°C72°F, low temperature around 14°C58°F, wind out of the E 22 km/h14 mph. Barometric pressure 1024 mb30.24 in, visibility 10 km6 mi, humidity 71%, uv index 5. |
Mon, 5th

Lo: 14°C57°F Hi: 26°C78°F |
Sunny Monday, temperatures as high as 26°C78°F, low temperature around 14°C57°F, wind out of the SW 23 km/h14 mph. Barometric pressure 1020 mb30.12 in, visibility 10 km6 mi, humidity 68%, uv index 5. |
Tue, 6th

Lo: 16°C60°F Hi: 24°C74°F |
Patchy rain possible Tuesday, temperatures as high as 24°C74°F, low temperature around 16°C60°F, chance of rain 88%, wind out of the WSW 27 km/h16 mph. Barometric pressure 1013 mb29.91 in, visibility 10 km6 mi, humidity 76%. |
Wed, 7th

Lo: 13°C55°F Hi: 21°C69°F |
Sunny Wednesday, temperatures as high as 21°C69°F, low temperature around 13°C55°F, wind out of the ENE 20 km/h12 mph. Barometric pressure 1015 mb29.97 in, visibility 10 km6 mi, humidity 62%, uv index 5. |
Thu, 8th

Lo: 12°C54°F Hi: 20°C68°F |
Sunny Thursday, temperatures as high as 20°C68°F, low temperature around 12°C54°F, wind out of the ESE 13 km/h8 mph. Barometric pressure 1008 mb29.77 in, visibility 10 km6 mi, humidity 59%, uv index 5. |
Fri, 9th

Lo: 15°C59°F Hi: 20°C68°F |
Patchy rain possible Friday, temperatures as high as 20°C68°F, low temperature around 15°C59°F, chance of rain 87%, wind out of the W 34 km/h21 mph. Barometric pressure 1000 mb29.53 in, visibility 10 km6 mi, humidity 70%. |
Sat, 10th

Lo: 11°C53°F Hi: 19°C66°F |
Partly cloudy Saturday, temperatures as high as 19°C66°F, low temperature around 11°C53°F, wind out of the WNW 22 km/h14 mph. Barometric pressure 1004 mb29.65 in, visibility 10 km6 mi, humidity 64%, uv index 5. |
Sun, 11th

Lo: 12°C53°F Hi: 17°C62°F |
Partly cloudy Sunday, temperatures as high as 17°C62°F, low temperature around 12°C53°F, wind out of the WNW 16 km/h10 mph. Barometric pressure 1006 mb29.71 in, visibility 10 km6 mi, humidity 66%, uv index 4. |