Current Conditions

Waterdown, Ontario

66°F19°C
Partly Cloudy

Wind

SW 10 mph16 km/h

Humidity

82%

Cloud Cover

61%

As of Monday, October 12, 2026 at 6:26 PM EDT

Today's Outlook

Night

Partly cloudy, with a low around 65°F18°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 69°F20°CLow 57°F14°CPrecip 0 in0 mm—Cloud 68%Wind SW 10 mph16 km/hMonday: Overcast and warm, with a high of 69°F20°C and morning low of 57°F14°C. Breezy from the WSW at 10 to 11 mph15 to 18 km/h. Monday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h.
ShowersHigh 76°F24°CLow 64°F18°CPrecip 0.09 in2.3 mm61%Cloud 45%Wind WSW 11 mph18 km/hTuesday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 65°F18°C. Breezy from the SW at 12 to 15 mph20 to 23 km/h. 61% chance of showers in the morning. Tuesday Night: Mostly cloudy, with a low around 64°F18°C. Breezy from the WSW at 10 to 11 mph17 to 18 km/h. 41% chance of showers overnight.
CloudyHigh 65°F18°CLow 54°F12°CPrecip 0.01 in0.2 mm5%Cloud 88%Wind WNW 8 mph13 km/hWednesday: Overcast and mild, with a high of 62°F16°C. Breezy from the WNW at 8 to 10 mph13 to 15 km/h. Wednesday Night: Overcast, with a low around 54°F12°C. Breezy from the NW at 9 mph14 km/h.
Light RainHigh 54°F12°CLow 48°F9°CFeels 44°F7°CPrecip 0.05 in1.2 mm39%Cloud 96%Wind ENE 9 mph14 km/hThursday: Overcast and mild, with a high of 52°F11°C. Breezy from the ENE at 9 mph15 km/h. Dry air. Thursday Night: Overcast, with a low around 49°F9°C. Breezy from the NE at 9 mph14 km/h. 39% chance of light rain in the evening.
Light RainHigh 53°F12°CLow 43°F6°CFeels 35°F2°CPrecip 0.41 in10.3 mm91%Cloud 77%Wind NW 11 mph18 km/hFriday: Overcast and mild, with a high of 53°F12°C. Breezy from the WNW at 12 to 14 mph19 to 22 km/h. 91% chance of light rain in the morning. Dry air. Friday Night: Mostly cloudy, with a low around 43°F6°C. Breezy from the NNW at 11 to 14 mph17 to 23 km/h. 87% chance of showers overnight.
ClearHigh 49°F9°CFeels 44°F7°CLow 35°F2°CFeels 27°F-3°CPrecip 0 in0.1 mm4%Cloud 29%Wind WNW 11 mph18 km/hSaturday: Partly cloudy and cool, with a high of 49°F9°C and morning low of 35°F2°C. Breezy from the W at 11 to 13 mph18 to 21 km/h. Very dry. Saturday Night: Mostly clear, with a low around 36°F2°C. Breezy from the WNW at 11 to 13 mph18 to 21 km/h.
ClearHigh 56°F13°CLow 38°F4°CFeels 32°F0°CPrecip 0 in0.1 mm1%Cloud 17%Wind WSW 10 mph15 km/hSunday: Mostly clear and mild, with a high of 56°F13°C and morning low of 39°F4°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. Dry air. Sunday Night: Mostly clear, with a low around 38°F4°C. Breezy from the SW at 10 mph16 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
MondayOct 1269°F20°C57°F14°C0 in0 mm· —68%Partly CloudySW 10 mph16 km/h
TuesdayOct 1376°F24°C64°F18°C0.09 in2.3 mm· 61%45%ShowersWSW 11 mph18 km/h
WednesdayOct 1465°F18°C54°F12°C0.01 in0.2 mm· 5%88%CloudyWNW 8 mph13 km/h
ThursdayOct 1554°F12°C48°F9°C
Feels 44°F7°C
0.05 in1.2 mm· 39%96%Light RainENE 9 mph14 km/h
FridayOct 1653°F12°C43°F6°C
Feels 35°F2°C
0.41 in10.3 mm· 91%77%Light RainNW 11 mph18 km/h
SaturdayOct 1749°F9°C
Feels 44°F7°C
35°F2°C
Feels 27°F-3°C
0 in0.1 mm· 4%29%ClearWNW 11 mph18 km/h
SundayOct 1856°F13°C38°F4°C
Feels 32°F0°C
0 in0.1 mm· 1%17%ClearWSW 10 mph15 km/h
MondayOct 1960°F16°C43°F6°C
Feels 38°F3°C
0.02 in0.4 mm· 7%57%Partly CloudySSW 9 mph15 km/h
TuesdayOct 2062°F17°C49°F9°C
Feels 45°F7°C
0.03 in0.8 mm· 12%47%DrizzleWSW 7 mph12 km/h
WednesdayOct 2160°F15°C46°F8°C
Feels 42°F5°C
0.03 in0.7 mm· 11%47%DrizzleSW 7 mph12 km/h
ThursdayOct 2260°F16°C48°F9°C
Feels 44°F7°C
0.15 in3.9 mm· 24%70%Light RainWSW 9 mph14 km/h
FridayOct 2357°F14°C48°F9°C
Feels 44°F7°C
0.12 in3 mm· 20%69%DrizzleW 9 mph14 km/h
SaturdayOct 2457°F14°C47°F8°C
Feels 43°F6°C
0.09 in2.2 mm· 17%64%DrizzleW 9 mph14 km/h
SundayOct 2555°F13°C46°F8°C
Feels 42°F6°C
0.07 in1.7 mm· 17%64%DrizzleW 9 mph15 km/h
MondayOct 2653°F12°C44°F7°C
Feels 39°F4°C
0.1 in2.6 mm· 21%67%DrizzleW 9 mph14 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 43.3334°N, 79.8829°W·Elevation: 236m·Timezone: America/Toronto·Population: 24,400