New York, NY 70° Los Angeles, CA 68° Chicago, IL 73° 🌤️ Houston, TX Miami, FL 82° Phoenix, AZ 89° Seattle, WA 62° Denver, CO 67° 🌤️ Toronto, ON 🌤️ Vancouver, BC
WeatherLive › Ontario › Hamilton

Hamilton, ON Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherHamilton · 3:31 AM EDT
79° | 65°
67°F
Feels like 69°
Sunny
WindN 4 mph · Gusts 8 mph
Precip8% · –
Humidity89% · Dew point 63°
UV index8 High
Air Quality86 Moderate
Pressure30.15 inHg
Visibility6 mi
Sunrise / Sunset6:24 AM · 8:22 PM · 13h 58m

Weather map — Hamilton

Full radar →
Now
67°
14%
4 mph
04:00
66°
16%
5 mph
05:00
66°
15%
4 mph
06:00
65°
16%
4 mph
07:00
66°
13%
4 mph
08:00
70°
9%
7 mph
09:00
72°
6%
8 mph
10:00
74°
5%
9 mph
11:00
79°
4%
11 mph
12:00
78°
4%
11 mph
13:00
77°
5%
11 mph
14:00
76°
5%
10 mph
15:00
77°
4%
10 mph
16:00
76°
4%
11 mph
17:00
76°
5%
12 mph
18:00
74°
7%
11 mph
19:00
73°
9%
10 mph
20:00
71°
10%
10 mph
21:00
70°
12%
9 mph
22:00
69°
14%
8 mph
23:00
68°
13%
8 mph
00:00
68°
10%
8 mph
01:00
67°
10%
7 mph
02:00
67°
10%
6 mph

Today · Sat 8/15

High 79°
8% / –

Sunny. Winds NE at 12 mph.

Overnight · Sat 8/15

Low 65°
— / –

Sunny.

Tomorrow · Sun 8/16

77° | 66°
81% / 0.22 in

Partly cloudy. Winds NW at 11 mph.

7-day trend

Hamilton · temperature + precipitation

10-day forecast

Updated 3:31 AM

Details & indices

Wind
4 mph N
Gusts 8 mph
Humidity
89%
Dew point 63°
Pressure
30.15 inHg
Rising
UV index
8 — High
High today
Air Quality
Moderate
AQI 86 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Hamilton

🌿 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
Sunset8:22 PM
Length of day13h 58m
Moonrise9:47 AM
Moonset9:38 PM
Moon phase🌒 Waxing Crescent · 8%
Next full moonAug 28 Sturgeon Moon
Latitude43.2501°N
Longitude-79.8496°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
1991-2020 climate normals — Hamilton

Monthly normals

Full climate page →
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max (°F) 32° 35° 44° 54° 67° 77° 82° 79° 73° 60° 47° 38°
Min (°F) 20° 20° 28° 36° 48° 59° 64° 63° 57° 46° 34° 27°
Precip (in) 3.0 2.8 2.6 3.9 2.9 3.4 3.5 2.8 2.4 3.3 2.3 3.1
Warmest: Jul · ⌀ 82°F Coldest: Jan · ⌀ 20°F Wettest: Apr · 3.9 in
Nearby places in {{REGION}}
🌤️
Toronto
—
— 🌤️
Ottawa
—
— 🌤️
Mississauga
—
— 🌤️
Brampton
—
— 🌤️
London
—
— 🌤️
Etobicoke
—
—
Data sources · Saturday, August 15
Where the Hamilton 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: 43.2501°N, -79.8496°.
NBM + global weather models
Updated: 3:31 AM
Weather in Hamilton
The 10-day span for Hamilton runs from a high near 87° on Monday down to 57° overnight on Saturday. Models drop roughly 0.24 in of precipitation across the stretch — watch Sunday (81%). No watches or warnings are active for the area right now. Right now Hamilton is about 3° cooler than nearby Toronto. Longer view: four full seasons with serious winter and real summer heat.
Hamilton, ON · Elev 312 ft · 43.25°N, 79.85°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: 3:31 AM