Weather in Markham - 14-day forecast

Detailed weather forecast for Markham, Canada: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Markham

today🌤️ 27°💧 0.2 mm

Thu🌧️ 25°💧 4.2 mm

Fri🌧️ 23°💧 4.5 mm

Sat🌧️ 26°💧 1 mm

Sun☁️ 27°💧 1.6 mm

Mon🌤️ 30°💧 0.2 mm

Tue🌧️ 28°💧 3.3 mm

Wed☀️ 28°💧 0.5 mm

14-day forecast - Markham

📅 Markham 30 & 45-day weather - long-range outlook

Next 15 days · forecast

28°

around 20° at night · days with rain: 9

Weeks 3-4 · avg for July

27°

around 16° at night · rain chance 44%

Weeks 5-7 · avg for August

26°

around 16° at night · rain chance 43%

The 30 & 45-day outlook for Markham: the next 15 days are a numerical forecast updated daily - on average 28° by day and 20° at night. Further out we rely on multi-year climate averages: around 27° in July, and about 26° in August. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Markham

Wednesday8 July 2026

🌤️27°a few clouds

sunrise 05:43 · sunset 21:01 · night 23° · evening 29° · rain 0.21 mm · humidity 44% · wind 3 m/s · clouds 21%

Thursday9 July 2026

🌧️25°moderate rain

sunrise 05:44 · sunset 21:01 · night 20° · evening 24° · rain 4.21 mm · humidity 69% · wind 5 m/s · clouds 57%

Friday10 July 2026

🌧️23°light rain

sunrise 05:44 · sunset 21:00 · night 21° · evening 25° · rain 4.49 mm · humidity 75% · wind 4 m/s · clouds 100%

Saturday11 July 2026

🌧️26°light rain

sunrise 05:45 · sunset 21:00 · night 19° · evening 22° · rain 0.98 mm · humidity 39% · wind 4 m/s · clouds 40%

Sunday12 July 2026

☁️27°overcast clouds

sunrise 05:46 · sunset 20:59 · night 19° · evening 23° · rain 1.59 mm · humidity 28% · wind 3 m/s · clouds 100%

Monday13 July 2026

🌤️30°a few clouds

sunrise 05:47 · sunset 20:58 · night 24° · evening 27° · rain 0.15 mm · humidity 38% · wind 4 m/s · clouds 17%

Tuesday14 July 2026

🌧️28°moderate rain

sunrise 05:48 · sunset 20:58 · night 20° · evening 25° · rain 3.33 mm · humidity 74% · wind 6 m/s · clouds 87%

Wednesday15 July 2026

☀️28°clear sky

sunrise 05:48 · sunset 20:57 · night 20° · evening 24° · rain 0.54 mm · humidity 31% · wind 3 m/s · clouds 83%

Thursday16 July 2026

☀️28°clear sky

sunrise 05:49 · sunset 20:56 · night 21° · evening 25° · rain 2.07 mm · humidity 32% · wind 5 m/s · clouds 20%

Friday17 July 2026

☁️30°broken clouds

sunrise 05:50 · sunset 20:56 · night 22° · evening 26° · rain 18.48 mm · humidity 25% · wind 5 m/s · clouds 56%

Saturday18 July 2026

🌧️30°light rain

sunrise 05:51 · sunset 20:55 · night 22° · evening 23° · rain 1.11 mm · humidity 36% · wind 5 m/s · clouds 98%

Sunday19 July 2026

🌧️33°light rain

sunrise 05:52 · sunset 20:54 · night 20° · evening 27° · rain 1.5 mm · humidity 34% · wind 5 m/s · clouds 2%

Monday20 July 2026

🌧️27°light rain

sunrise 05:53 · sunset 20:53 · night 17° · evening 23° · rain 0.42 mm · humidity 23% · wind 6 m/s · clouds 100%

Tuesday21 July 2026

☀️25°clear sky

sunrise 05:54 · sunset 20:52 · night 20° · evening 22° · rain 4.47 mm · humidity 24% · wind 7 m/s · clouds 7%

Wednesday22 July 2026

☁️27°broken clouds

sunrise 05:55 · sunset 20:52 · night 14° · evening 19° · humidity 27% · wind 7 m/s · clouds 57%

☀️ UV index in Markham - is it safe to sunbathe?

Today the UV index in Markham is 7 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Air quality and smog in Markham

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Vancouver	20.8	23.6	good
Montréal	12	12.5	very good
Québec	11	11.4	very good
Surrey	8	10.1	very good
Toronto	6.2	6.2	very good
Calgary	5	5.4	very good
Edmonton	4.7	5	very good
Ottawa	3.8	3.9	very good
London	3.5	3.5	very good
Victoria	2.7	3.8	very good
Oshawa	2.2	2.2	very good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-07-07, 21:00).

Markham weather through the year

Warmest, driest months on average: April, May, June, July.

🎉 Public holidays in Markham - when are the long weekends?

Next long weekend in Markham: Labour Day (7 September, Monday) - Saturday–Monday (3 days off).

7 SeptemberMonday

Labour Day

🎈 long weekend

30 SeptemberWednesday

National Day for Truth and Reconciliation

12 OctoberMonday

Thanksgiving

🎈 long weekend

25 DecemberFriday

Christmas Day

🎈 long weekend

1 JanuaryFriday 2027

New Year's Day

🎈 long weekend

26 MarchFriday 2027

Good Friday

🎈 long weekend

24 MayMonday 2027

Victoria Day

🎈 long weekend

1 JulyThursday 2027

Canada Day

🎈 long weekend + bridge day

6 SeptemberMonday 2027

Labour Day

🎈 long weekend

30 SeptemberThursday 2027

National Day for Truth and Reconciliation

🎈 long weekend + bridge day

11 OctoberMonday 2027

Thanksgiving

🎈 long weekend

25 DecemberSaturday 2027

Christmas Day

falls on a weekend

Public holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave.

Nearby places

TorontoMississauga

FAQ - Markham weather

What is the weather like in Markham today?

Today it is about 27° during the day and 23° at night, a few clouds.

How far ahead can I check the forecast for Markham?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.