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Markham weather

Ontario · 338,503 inhabitants · Thursday, October 29 · updated 12:49

Rain around 13:49 Air: Fair

12°

Clear sky

Feels like 12°C

Wind

16 km/h

Gusts

16 km/h

Humidity

92 %

Pressure

1019 hPa

Clouds

1 %

Storm

Rise 07:49 Set 18:11 Day 10 h 22 min UV 3 · Moderate

Morning, afternoon, evening

Trend

Afternoon

Partly cloudy

20°18°

Feels like 21°

Wind ↑ SW 29 km/h

Gusts 37 km/h

Humidity 49 %

Evening

Drizzle

15°

Feels like 15°

Wind ↑ W 19 km/h

Gusts 43 km/h

Humidity 82 %

💧 0.3 mm

14:00

18°

SW 29

17:00

20°

SW 17

Markham forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +5.2° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

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

Markham climate: what a normal year looks like

Nights typically freeze from November to March, the coldest averaging −10 °C in January.

The hottest stretch is July, when afternoons average 26 °C; the coldest is January, when nights average −10 °C. Between those two months the average temperature changes by 28 °C.

From 15 h 28 min of daylight in late June to 8 h 54 min in late December.

There is no real dry season: monthly rainfall stays between 55 mm and 95 mm on average.

Forecast highs for the coming week average 16 °C, 3 °C warmer than a normal October (13 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
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
Whole year	12 °C	3 °C	940 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 43.87° N, 79.27° W, 1991–2020. 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 you breathe in Markham: pollution and pollen

2/6

Fair

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.512µg/m³

PM1012µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Markham

Rain observed over the last two hours by official weather radars around Markham, followed by the radar forecast for the next hour where the weather service provides one.

Rain radar Last two hours, then forecast where available · drag the timeline

Moon over Markham

Waning gibbous

87 % illuminated · 18.3 days

Rise 16:20 Set 08:16

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%

Tue 10/11 1% New moon

Moonrise and moonset in local time (America/Toronto); phase and lit fraction from a synodic calculation.

Look up a past day in Markham

Curious about the weather in Markham on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Markham weather at a glance

This page gathers everything about the weather in Markham, Ontario: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “clear sky”, it is 12 °C (feels like 12 °C) and the wind blows at 16 km/h.

Expected range today: 11 °C to 20 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Vaughan 19 km 9°

Toronto 21 km 9°

Etobicoke 35 km 9°

Mississauga 45 km 11°

Brampton 45 km 9°

Hamilton 83 km 12°

London 187 km 13°

Markham weather data for developers

Use the Markham forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

Create a free key

Where does this forecast come from? Our engine, checked every day against 1125 weather stations