Current Conditions

Ancaster, Ontario

42°F6°C
Cloudy

Cloudy. Temperatures will hold near 41°F.Cloudy. Temperatures will hold near 5°C.

Wind

S 5 mph8 km/h

Humidity

90%

Cloud Cover

89%

As of Sunday, November 1, 2026 at 4:49 AM EST

Today's Outlook

Day

Mostly cloudy. Temperatures will range from 42°F to 64°F.Mostly cloudy. Temperatures will range from 6°C to 18°C.

Night

Mostly clear. Temperatures will range from 47°F to 56°F.Mostly clear. Temperatures will range from 8°C to 13°C.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
CloudyHigh 64°F18°CLow 41°F5°CFeels 38°F3°CPrecip 0 in0 mm—Cloud 67%Wind SSW 5 mph8 km/hMostly cloudy. Temperatures will range from 42°F to 64°F.Mostly cloudy. Temperatures will range from 6°C to 18°C.Mostly clear. Temperatures will range from 47°F to 56°F.Mostly clear. Temperatures will range from 8°C to 13°C.
Low chance of drizzleHigh 66°F19°CLow 47°F8°CFeels 44°F7°CPrecip 0.01 in0.2 mm15%Cloud 87%Wind SSW 6 mph10 km/hCloudy. Temperatures will range from 47°F to 66°F. There is a marginal chance of brief drizzle in the afternoon. A breeze from the SSW at 7 mph.Cloudy. Temperatures will range from 8°C to 19°C. There is a marginal chance of brief drizzle in the afternoon. A breeze from the SSW at 11 km/h.There is a medium chance of drizzle throughout the night. Temperatures will range from 57°F to 61°F. Cloudy, with a breeze from the SSW at 9 mph.There is a medium chance of drizzle throughout the night. Temperatures will range from 14°C to 16°C. Cloudy, with a breeze from the SSW at 14 km/h.
Medium chance of drizzleHigh 68°F20°CLow 57°F14°CPrecip 0.05 in1.2 mm38%Cloud 77%Wind SSW 10 mph15 km/hThere is a medium chance of drizzle in the morning. Temperatures will range from 58°F to 68°F. Mostly cloudy, with a breeze from the SSW at 11–12 mph.There is a medium chance of drizzle in the morning. Temperatures will range from 14°C to 20°C. Mostly cloudy, with a breeze from the SSW at 18–19 km/h.A breeze from the SSW at 9–10 mph. Temperatures will range from 57°F to 64°F. Partly cloudy.A breeze from the SSW at 14–16 km/h. Temperatures will range from 14°C to 18°C. Partly cloudy.
Low chance of showersHigh 70°F21°CLow 57°F14°CPrecip 0.08 in2.1 mm45%Cloud 62%Wind SSW 9 mph15 km/hThere is a low chance of showers in the afternoon. Temperatures will range from 57°F to 70°F. Partly cloudy, with a breeze from the SSW at 10 mph.There is a low chance of showers in the afternoon. Temperatures will range from 14°C to 21°C. Partly cloudy, with a breeze from the SSW at 16 km/h.There is a medium chance of light rain throughout the night. Temperatures will range from 59°F to 65°F. Mostly cloudy, with a breeze from the S at 10–11 mph.There is a medium chance of light rain throughout the night. Temperatures will range from 15°C to 18°C. Mostly cloudy, with a breeze from the S at 16–18 km/h.
Medium chance of light rainHigh 62°F16°CLow 53°F12°CPrecip 0.28 in7 mm56%Cloud 80%Wind SW 10 mph16 km/hThere is a medium chance of light rain throughout the day. Temperatures will hold near 60°F. Mostly cloudy, with a breeze from the SW at 10–12 mph.There is a medium chance of light rain throughout the day. Temperatures will hold near 16°C. Mostly cloudy, with a breeze from the SW at 16–19 km/h.There is a low chance of light rain throughout the night. Temperatures will range from 51°F to 58°F. Mostly cloudy, with a breeze from the SW at 8–9 mph.There is a low chance of light rain throughout the night. Temperatures will range from 11°C to 14°C. Mostly cloudy, with a breeze from the SW at 13–14 km/h.
Medium chance of light rainHigh 53°F12°CLow 47°F8°CFeels 43°F6°CPrecip 0.14 in3.6 mm38%Cloud 85%Wind WSW 8 mph14 km/hThere is a medium chance of light rain throughout the day. Temperatures will hold near 52°F. Mostly cloudy, with a breeze from the WSW at 9–10 mph.There is a medium chance of light rain throughout the day. Temperatures will hold near 11°C. Mostly cloudy, with a breeze from the WSW at 14–16 km/h.There is a low chance of drizzle throughout the night. Temperatures will range from 44°F to 50°F, feeling as cold as 39°F. Mostly cloudy, with a breeze from the WNW at 9 mph.There is a low chance of drizzle throughout the night. Temperatures will range from 7°C to 10°C, feeling as cold as 4°C. Mostly cloudy, with a breeze from the WNW at 14 km/h.
Low chance of light rainHigh 48°F9°CFeels 44°F6°CLow 42°F5°CFeels 37°F3°CPrecip 0.08 in2.1 mm28%Cloud 83%Wind W 9 mph15 km/hThere is a low chance of light rain in the afternoon. Temperatures will hold near 47°F, feeling as cold as 40°F. Mostly cloudy, with a breeze from the W at 10 mph.There is a low chance of light rain in the afternoon. Temperatures will hold near 8°C, feeling as cold as 4°C. Mostly cloudy, with a breeze from the W at 16 km/h.A breeze from the W at 9 mph, and there is a marginal chance of light rain in the evening. Temperatures will range from 39°F to 46°F, feeling as cold as 34°F. Mostly cloudy.A breeze from the W at 14 km/h, and there is a marginal chance of light rain in the evening. Temperatures will range from 4°C to 8°C, feeling as cold as 1°C. Mostly cloudy.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
SundayNov 164°F18°C41°F5°C
Feels 38°F3°C
0 in0 mm· —67%CloudySSW 5 mph8 km/h
MondayNov 266°F19°C47°F8°C
Feels 44°F7°C
0.01 in0.2 mm· 15%87%Low chance of drizzleSSW 6 mph10 km/h
TuesdayNov 368°F20°C57°F14°C0.05 in1.2 mm· 38%77%Medium chance of drizzleSSW 10 mph15 km/h
WednesdayNov 470°F21°C57°F14°C0.08 in2.1 mm· 45%62%Low chance of showersSSW 9 mph15 km/h
ThursdayNov 562°F16°C53°F12°C0.28 in7 mm· 56%80%Medium chance of light rainSW 10 mph16 km/h
FridayNov 653°F12°C47°F8°C
Feels 43°F6°C
0.14 in3.6 mm· 38%85%Medium chance of light rainWSW 8 mph14 km/h
SaturdayNov 748°F9°C
Feels 44°F6°C
42°F5°C
Feels 37°F3°C
0.08 in2.1 mm· 28%83%Low chance of light rainW 9 mph15 km/h
SundayNov 847°F8°C
Feels 43°F6°C
39°F4°C
Feels 34°F1°C
0.04 in0.9 mm· 12%77%BreezeW 8 mph13 km/h
MondayNov 947°F8°C
Feels 42°F6°C
38°F3°C
Feels 32°F0°C
0.09 in2.3 mm· 23%75%Low chance of showersW 9 mph14 km/h
TuesdayNov 1048°F9°C
Feels 43°F6°C
40°F4°C
Feels 33°F1°C
0.07 in1.9 mm· 25%70%Low chance of drizzleW 10 mph15 km/h
WednesdayNov 1147°F8°C
Feels 42°F6°C
38°F4°C
Feels 32°F0°C
0.03 in0.7 mm· 12%67%BreezeW 9 mph15 km/h
ThursdayNov 1247°F8°C
Feels 43°F6°C
37°F3°C
Feels 31°F-1°C
0.03 in0.7 mm· 10%65%BreezeWSW 8 mph14 km/h
FridayNov 1349°F10°C
Feels 45°F7°C
37°F3°C
Feels 31°F-1°C
0.06 in1.4 mm· 13%60%BreezeWSW 9 mph14 km/h
SaturdayNov 1451°F11°C39°F4°C
Feels 33°F1°C
0.11 in2.8 mm· 23%61%Low chance of showersSW 9 mph15 km/h
SundayNov 1552°F11°C41°F5°C
Feels 36°F2°C
0.08 in2.1 mm· 19%61%Low chance of showersWSW 9 mph15 km/h

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Coordinates: 43.2181°N, 79.9872°W·Elevation: 253m·Timezone: America/Toronto·Population: 40,557