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Alliston, ON Weather Forecast
Alliston, ON Weather Forecast Date: 245 PM Fri Sep 18 2026 (Alliston Time)
Today Lo: 11°C51°F Hi: 17°C63°F |
Overcast Friday, temperatures as high as 17°C63°F, low temperature around 11°C51°F, chance of rain 11%, wind out of the N 14 km/h9 mph. Barometric pressure 102.5 kPa30.27 in, visibility 10 km6 mi, humidity 48%. |
| Saturday Lo: 8°C46°F Hi: 17°C62°F |
Overcast Saturday, temperatures as high as 17°C62°F, low temperature around 8°C46°F, chance of rain 9%, wind out of the SE 14 km/h9 mph. Barometric pressure 102.4 kPa30.24 in, visibility 10 km6 mi, humidity 46%. |
| Sunday Lo: 11°C52°F Hi: 18°C65°F |
Overcast Sunday, temperatures as high as 18°C65°F, low temperature around 11°C52°F, chance of rain 12%, wind out of the ENE 9 km/h6 mph. Barometric pressure 101.6 kPa30 in, visibility 10 km6 mi, humidity 52%. |
| Monday Lo: 5°C42°F Hi: 14°C57°F |
Overcast Monday, temperatures as high as 14°C57°F, low temperature around 5°C42°F, chance of rain 10%, wind out of the ENE 17 km/h11 mph. Barometric pressure 102.6 kPa30.3 in, visibility 10 km6 mi, humidity 43%. |
Tuesday Lo: 8°C46°F Hi: 18°C64°F |
Sunny Tuesday, temperatures as high as 18°C64°F, low temperature around 8°C46°F, chance of rain 2%, wind out of the E 24 km/h15 mph. Barometric pressure 102.7 kPa30.33 in, visibility 10 km6 mi, humidity 42%. |
Wednesday Lo: 9°C48°F Hi: 11°C53°F |
Chance of showers Wednesday, temperatures as high as 11°C53°F, low temperature around 9°C48°F, chance of rain 48%, wind out of the ESE 27 km/h17 mph. Barometric pressure 102.8 kPa30.36 in, visibility 5 km3 mi, humidity 82%. |
| Thursday Lo: 11°C51°F Hi: 14°C57°F |
Chance of showers Thursday, temperatures as high as 14°C57°F, low temperature around 11°C51°F, chance of rain 35%, wind out of the NW 2 km/h1 mph. Barometric pressure 102.2 kPa30.18 in, visibility 5 km3 mi, humidity 94%. |
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