New York, NY 76° 🌤️ Los Angeles, CA Chicago, IL 81° 🌤️ Houston, TX Miami, FL 88° 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO 🌤️ Toronto, ON Vancouver, BC 69°
WeatherLive › Ontario › Markham

Markham, ON Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherMarkham · 7:54 PM EDT
70° | 65°
68°F
Feels like 72°
Mostly cloudy
-3° vs. normal — cooler than usual for this time of year
WindNW 2 mph · Gusts 3 mph
Precip75% · 0.16 in
Humidity93% · Dew point 65°
UV index6 High
Air Quality39 Good
Pressure29.83 inHg
Visibility6 mi
Sunrise / Sunset6:22 AM · 8:20 PM · 13h 58m

Weather map — Markham

Full radar →
Now
68°
29%
2 mph
20:00
67°
32%
3 mph
21:00
66°
28%
2 mph
22:00
65°
27%
2 mph
23:00
65°
26%
3 mph
00:00
66°
26%
4 mph
01:00
66°
33%
4 mph
02:00
67°
39%
5 mph
03:00
67°
40%
6 mph
04:00
66°
34%
7 mph
05:00
65°
18%
9 mph
06:00
64°
18%
11 mph
07:00
64°
16%
11 mph
08:00
65°
14%
11 mph
09:00
67°
10%
12 mph
10:00
70°
5%
12 mph
11:00
73°
2%
12 mph
12:00
75°
2%
11 mph
13:00
77°
1%
10 mph
14:00
78°
2%
11 mph
15:00
79°
2%
12 mph
16:00
78°
1%
12 mph
17:00
77°
1%
13 mph
18:00
76°
1%
12 mph

Today · Sun 8/16

High 70°
75% / 0.16 in

Sunny. Winds E at 10 mph.

Tonight · Sun 8/16

Low 64°
28% / –

Fog. Winds NW at 2 mph.

Tomorrow · Mon 8/17

79° | 63°
17% / 0.01 in

Sunny. Winds NW at 13 mph.

7-day trend

Markham · temperature + precipitation

10-day forecast

Updated 7:54 PM

Details & indices

Wind
2 mph NW
Gusts 3 mph
Humidity
93%
Dew point 65°
Pressure
29.83 inHg
Falling
UV index
6 — High
High today
Air Quality
Good
AQI 39 · US EPA
Allergy
High
Mugwort
Visibility
6 mi
Clear view
Allergy — Markham

🌿 Conditions right now

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

Sun & moon

Sunrise6:22 AM
Sunset8:20 PM
Length of day13h 58m
Moonrise10:55 AM
Moonset9:55 PM
Moon phase🌒 Waxing Crescent · 21%
Next full moonAug 28 Sturgeon Moon
Latitude43.8668°N
Longitude-79.2663°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
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
1991-2020 climate normals — Markham

Monthly normals

Full climate page →
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max (°F) 31° 33° 42° 52° 66° 76° 81° 79° 72° 59° 45° 37°
Min (°F) 17° 17° 26° 35° 47° 58° 64° 63° 56° 45° 33° 25°
Precip (in) 2.9 2.7 2.6 4.2 3.2 3.6 3.3 3.5 2.8 3.5 2.5 3.3
Warmest: Jul · ⌀ 81°F Coldest: Jan · ⌀ 17°F Wettest: Apr · 4.2 in
Nearby places in {{REGION}}
🌤️
Toronto
—
— 🌤️
Ottawa
—
— 🌤️
Mississauga
—
— 🌤️
Brampton
—
— 🌤️
Hamilton
—
— 🌤️
London
—
—
Data sources · Sunday, August 16
Where the Markham 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: 43.8668°N, -79.2663°.
NBM + global weather models
Updated: 7:54 PM
Weather in Markham
Markham's outlook: warmest day near 88° (Monday), coldest night about 59° (Tuesday). Roughly 0.43 in of rain falls over the period, with Saturday the most likely wet day (80%). The NWS alert board for this area is currently clear. Right now Markham is about 4° cooler than nearby London. Longer view: four full seasons with serious winter and real summer heat.
Markham, ON · Elev 551 ft · 43.87°N, 79.27°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: 7:54 PM