Markham weather — 10-day forecast

Temperature, rain, wind and feels-like in Markham, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 12:00 · NOAA HRRR model

26 °C

Partly cloudy

10.9 km/hforce 2

Next 12 h

  • 1226°
  • 1327°
  • 1427°
  • 1528°
  • 1627°
  • 1728°
  • 1828°
  • 1928°
  • 2026°
  • 20:34Sunset
  • 2124°
  • 2223°
  • 2322°13 %
  • 0022°12 %

28°17:00 22°00:00

Humidity
60 %
Dew point
18 °C
Gusts
15.3 km/h
Clouds
70 %
Pressure
1,019 hPa
UV
8 · high

Grid point 0.4 km away · 3.0 km grid · elevation 192 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 14:00
48
Moderate

Index set by Ozone

Ozone
111.6µg/m³
PM2.5
21.7µg/m³
PM10
22.6µg/m³
Nitrogen dioxide
4.9µg/m³
Sulphur dioxide
4.2µg/m³
Carbon monoxide
206.0µg/m³
Dust (AOD)
0.01

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

15° → 30°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Partly cloudy82 %

    28°

    21°

  • Fri

    Light drizzle64 %

    28°

    19°

  • Sat

    Light drizzle98 %

    30°

    19°

  • Sun

    Mainly clear26 %

    27°

    18°

  • Mon

    Thunderstorm70 %

    27°

    20°

  • Tue

    Partly cloudy

    27°

    20°

  • Wed

    Partly cloudy

    27°

    17°

  • Thu

    Thunderstorm9 mm

    24°

    21°

  • Fri

    Light drizzle0 mm

    22°

    18°

  • Sat

    Mainly clear

    20°

    15°

Gusts · Sat 55.8 km/h · Fri 59.4 km/h

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV8high
Sunrise
06:12
Daylight
14 h 22
Sunset
20:34

Radiation · 17.7 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

0.1 mperiod 2 s 207°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in Markham the mean temperature will be 25.6 °C — +4.3 °C against the normal for 6 August, measured from 1940 to 2026. (1,290 obs.)

Markham climate — normals and trends