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Weather in Markham

Ontario · 338,503 inhabitants · Wednesday, October 28 · updated 13:32

Air: Good

13°

Clear sky

Feels like 13°C

Wind

10 km/h

Gusts

11 km/h

Humidity

65 %

Pressure

1026 hPa

Clouds

3 %

Storm

Rise 07:48 Set 18:13 Day 10 h 24 min UV 5 · Moderate

Detailed forecast

Trend

Afternoon

Clear sky

13°

Feels like 13°

Wind ↑ E 10 km/h

Humidity 59 %

Evening

Clear sky

12°11°

Feels like 12°

Wind ↑ E 8 km/h

Humidity 80 %

14:00

13°

E 10

17:00

13°

E 9

Weather charts for Markham · 7 days

Temperatures over 7 days

▲ +4.3° above seasonal normals this week

Highs Lows Seasonal normal (1991-2020 average)

Hourly detail

Temperature (°C) Precipitation (mm) Wind (km/h)

Climate of Markham

Average lows are below freezing from November to March, down to −10 °C in January.

July is the warmest month, with average highs of 26 °C. January is the coldest, with average lows of −10 °C. Their mean temperatures differ by 28 °C.

Daylight lasts 15 h 28 min at the June solstice and 8 h 54 min at the December solstice.

Rain is spread through the year: every month gets between 55 mm and 95 mm on average.

This week’s forecast highs average 15 °C, 2 °C above the October normal (13 °C).

Monthly averages, 1991–2020
Month	Avg high	Avg low	Rain
Jan	−3 °C	−10 °C	69 mm
Feb	−1 °C	−9 °C	55 mm
Mar	4 °C	−5 °C	63 mm
Apr	11 °C	1 °C	84 mm
May	18 °C	8 °C	86 mm
Jun	23 °C	13 °C	95 mm
Jul	26 °C	16 °C	90 mm
Aug	25 °C	15 °C	87 mm
Sep	21 °C	11 °C	80 mm
Oct	13 °C	5 °C	84 mm
Nov	7 °C	0 °C	75 mm
Dec	1 °C	−6 °C	68 mm
Year	12 °C	3 °C	940 mm

Climate normals: ERA5 reanalysis 1991–2020 (Copernicus/ECMWF), computed by SkiesAtlas for 43.87° N, 79.27° W. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air quality & pollen in Markham

1/6

Good

European Air Quality Index (EAQI) · CAMS source

PM2.54µg/m³

PM104µg/m³

CAMS data (Copernicus) · air quality and pollen refreshed several times a day.

Rain in Markham: live radar and next-hour forecast

Will it rain in Markham? Track precipitation live on the radar and anticipate showers in the next hour — the +1 h extrapolation is based on the real movement of rain cells.

Full-screen radar · rain within the hour

Rain radar Observed, then extrapolation up to +1h (real cell movement) · drag the timeline

Moon calendar for Markham

Waning gibbous

93 % illuminated · 17.3 days

Rise 15:20 Set 07:03

Thu 29/10 87%

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Rise and set in local time (America/Toronto) · phases and illumination computed by SkiesAtlas (synodic model).

Weather history for Markham

What was the weather in Markham on a past date? Pick a day — ERA5 reanalysis data (ECMWF / Copernicus C3S), available up to one week ago.

The weather in Markham

Find the full weather for Markham, Ontario: current conditions, forecast by time of day (morning, afternoon, evening) and a 7-day trend. Right now the sky is “clear sky” with 13 °C (feels like 13 °C) and wind at 10 km/h.

Today, temperatures range from 10 °C to 13 °C, with no significant precipitation. Forecast computed by our multi-model engine SkiesAtlas (ECMWF-AIFS, NOAA GFS, DWD ICON): cloud cover calibrated on METAR observations, convective energy (CAPE) for storms.

Nearby cities

Richmond Hill 14 km 7°

Weather API for Markham

Get the Markham forecast in JSON for your website or app, plus air quality, tides and astronomy. Free API key, no credit card required.

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How is this forecast computed? Multi-model engine, verified daily against 1125 weather stations