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WeatherLive › Ontario › Waterdown

Waterdown, ON Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherWaterdown · 5:55 PM EDT
78° | 65°
77°F
Feels like 75°
Sunny
WindE 10 mph · Gusts 12 mph
Precip8% · –
Humidity60% · Dew point 62°
UV index7 High
Air Quality58 Moderate
Pressure30.12 inHg
Visibility6 mi
Sunrise / Sunset6:24 AM · 8:23 PM · 13h 59m

Weather map — Waterdown

Full radar →
Now
77°
5%
10 mph
18:00
76°
4%
11 mph
19:00
74°
5%
8 mph
20:00
71°
7%
6 mph
21:00
69°
8%
6 mph
22:00
69°
9%
6 mph
23:00
68°
9%
6 mph
00:00
68°
9%
5 mph
01:00
67°
10%
5 mph
02:00
67°
11%
5 mph
03:00
66°
11%
4 mph
04:00
66°
11%
5 mph
05:00
66°
11%
5 mph
06:00
66°
14%
4 mph
07:00
68°
13%
4 mph
08:00
70°
12%
4 mph
09:00
73°
15%
3 mph
10:00
74°
21%
1 mph
11:00
72°
27%
3 mph
12:00
71°
61%
4 mph
13:00
70°
55%
4 mph
14:00
69°
0.04 in
5 mph
15:00
69°
0.02 in
6 mph
16:00
69°
0.03 in
6 mph

Today · Sat 8/15

High 78°
8% / –

Sunny. Winds E at 11 mph.

Tonight · Sat 8/15

Low 66°
8% / –

Sunny. Winds NE at 6 mph.

Tomorrow · Sun 8/16

74° | 66°
77% / 0.15 in

Partly cloudy. Winds NE at 6 mph.

7-day trend

Waterdown · temperature + precipitation

10-day forecast

Updated 5:55 PM

Details & indices

Wind
10 mph E
Gusts 12 mph
Humidity
60%
Dew point 62°
Pressure
30.12 inHg
Rising
UV index
7 — High
High today
Air Quality
Moderate
AQI 58 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Waterdown

🌿 Conditions right now

View all →
Birch
None
Grass
High
Oak
None
Alder
None
Hazel
None
Mugwort
Very high
Ragweed
Low

Sun & moon

Sunrise6:24 AM
Sunset8:23 PM
Length of day13h 59m
Moonrise9:47 AM
Moonset9:38 PM
Moon phase🌒 Waxing Crescent · 12%
Next full moonAug 28 Sturgeon Moon
Latitude43.3334°N
Longitude-79.8829°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Toronto
—
— 🌤️
Ottawa
—
— 🌤️
Mississauga
—
— 🌤️
Brampton
—
— 🌤️
Hamilton
—
— 🌤️
London
—
—
Data sources · Saturday, August 15
Where the Waterdown forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 43.3334°N, -79.8829°.
NBM + global weather models
Updated: 5:55 PM
Weather in Waterdown
The 10-day span for Waterdown runs from a high near 89° on Monday down to 57° overnight on Tuesday. Models drop roughly 0.38 in of precipitation across the stretch — watch Saturday (87%). The NWS alert board for this area is currently clear. Right now Waterdown is running about 9° warmer than Toronto. Longer view: four full seasons with serious winter and real summer heat.
Waterdown, ON · Elev 774 ft · 43.33°N, 79.88°W · Ontario · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 5:55 PM