Live Weather & Forecast

Weather in Waterdown

Ontario, Canada · Real-time conditions & 3-day outlook

Flag of Canada
Mist
4°C
Feels like 1°C
40°F / Feels 34°F
Mist
Waterdown, Ontario
🌙 Nighttime
Updated: 2026-04-26 05:30
💧
Humidity
97%
💨
Wind
13 km/h NE
🌬️
Wind Gust
18.3 km/h
🌡️
Pressure
1019 mb
👁️
Visibility
10 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
4.1°C
🌐
Wind Degree
44°

Air Quality Index

US EPA: Good UK DEFRA: Low (2)
CO
227.9 μg/m³
NO₂
15.7 μg/m³
O₃
52 μg/m³
SO₂
6.5 μg/m³
PM 2.5
12.1 μg/m³
PM 10
12.4 μg/m³

Weather Alerts 3

Met · Moderate · Future
yellow advisory - fog - in effect

Near zero visibility in fog is expected. Locally dense fog has developed which will persist into early Sunday morning before dissipating. ### Visibility will likely be suddenly reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Effective: 2026-04-26T04:58:26-00:00  ·  Expires: 2026-04-26T14:00:26-00:00
Met · Moderate · Future
yellow advisory - fog - in effect

Near zero visibility in fog is expected. Locally dense fog has develop that will persist into early Sunday morning before dissipating. ### Visibility will likely be suddenly reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Effective: 2026-04-26T04:44:28-00:00  ·  Expires: 2026-04-26T13:59:28-00:00
Met · Moderate · Future
yellow advisory - fog - in effect

Near zero visibility in fog is expected. ### Visibility will likely be suddenly reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Effective: 2026-04-26T04:44:28-00:00  ·  Expires: 2026-04-26T13:59:28-00:00

Today's Hourly Forecast

24-hour breakdown for Waterdown, Ontario

12 AM
Overcast
7°
Overcast
💧 94% 💨 17.6 km/h
1 AM
Clear
6°
Clear
💧 92% 💨 16.6 km/h
2 AM
Clear
6°
Clear
💧 89% 💨 15.1 km/h
3 AM
Clear
6°
Clear
💧 91% 💨 14.4 km/h
4 AM
Clear
5°
Clear
💧 94% 💨 13.7 km/h
5 AM
Mist
4°
Mist
💧 97% 💨 13 km/h
6 AM
Fog
4°
Fog
💧 100% 💨 13 km/h
7 AM
Fog
4°
Fog
💧 100% 💨 12.2 km/h
8 AM
Fog
4°
Fog
💧 100% 💨 13.3 km/h
9 AM
Fog
4°
Fog
💧 100% 💨 14 km/h
10 AM
Fog
5°
Fog
💧 100% 💨 15.1 km/h
11 AM
Fog
5°
Fog
💧 100% 💨 16.6 km/h
12 PM
Fog
6°
Fog
💧 99% 💨 16.2 km/h
1 PM
Fog
6°
Fog
💧 98% 💨 15.5 km/h
2 PM
Fog
7°
Fog
💧 98% 💨 14.4 km/h
3 PM
Fog
8°
Fog
💧 97% 💨 13.7 km/h
4 PM
Sunny
8°
Sunny
💧 90% 💨 13 km/h
5 PM
Sunny
9°
Sunny
💧 89% 💨 12.6 km/h
6 PM
Partly Cloudy
9°
Partly Cloudy
💧 64% 💨 12.2 km/h
7 PM
Sunny
8°
Sunny
💧 68% 💨 11.2 km/h
8 PM
Sunny
7°
Sunny
💧 74% 💨 8.3 km/h
9 PM
Clear
7°
Clear
💧 77% 💨 6.5 km/h
10 PM
Clear
6°
Clear
💧 79% 💨 6.1 km/h
11 PM
Clear
6°
Clear
💧 81% 💨 6.1 km/h

3-Day Forecast

Daily overview for Waterdown, Ontario

Today
Fog
Fog
10° / 4°
🌧️ 0% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 17.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.3
🌅 Sunrise: 06:19 AM
🌇 Sunset: 08:15 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Sunny
Sunny
13° / 5°
🌧️ 0% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 18 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.2
🌅 Sunrise: 06:18 AM
🌇 Sunset: 08:16 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Tue, Apr 28
Moderate rain
Moderate rain
14° / 8°
🌧️ 87% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 28.8 km/h
🌧️ Total precip: 5.35 mm
☀️ UV Index: 3.8
🌅 Sunrise: 06:16 AM
🌇 Sunset: 08:17 PM
🌙 Waxing Gibbous
🌑 Moon: 87% lit

Best Time to Visit Waterdown

Plan your trip to Waterdown, Canada around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Waterdown 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Waterdown?
Current conditions in Waterdown: Mist, temperature 4°C, humidity 97%.
What is the best time to visit Waterdown?
The best time to visit Waterdown is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Waterdown?
Waterdown is located at approximately 43.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Waterdown?
The wettest period in Waterdown is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Waterdown?
For visits to Waterdown during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Waterdown in?
Waterdown is located in Canada, in the state of Ontario.
What are the public holidays in Waterdown in 2026?
View the 2026 public holidays for Waterdown on our Holidays page.
What are the GPS coordinates used for the weather forecast in Waterdown?
The weather forecast for Waterdown uses coordinates 43.3314, -79.8957.
What is the current temperature outside in Waterdown?
The current outdoor temperature in Waterdown is 4°C (39°F) with mist.
What is the hourly weather forecast for Waterdown today?
Today's hour-by-hour weather breakdown for Waterdown is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Waterdown tomorrow hour by hour?
Tomorrow's forecast for Waterdown shows a high of 13°C and a low of 5°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Waterdown?
Rain is not expected in Waterdown today. Current forecast shows no significant rain probability.
Is it going to rain today in Waterdown?
No, rain is not forecast for Waterdown today. Current conditions show clear to partly cloudy skies.