Markham Hourly Weather
7°
Clear sky
Feels like 7°
−2.3° vs normal — right about normal
Great
Outdoor comfort right now
It is 7°C and clear sky in Markham. Nothing wet on the radar for the next 24 hours. Temperatures climb about 5°C over the next six hours. Tomorrow: partly cloudy, high 19°C.
- Pressure rising steadily 1027 hPa
- 48h+ since rain
- Wind 0 km/h NW
- Humidity 91%
- Cloud 0%
- UV peak 7
- Rain chance 0%
Next 48 hours
Scroll sideways — or pick a day below.
Now
6
7am
8
8am
7
9am
8
10am
8
11am
9
12pm
10
1pm
10
2pm
10
3pm
11
4pm
11
5pm
10
6pm
9
7pm
8
8pm
8
9pm
8
10pm
8
11pm
9
12am
Sun
9
1am
10
2am
11
3am
11
4am
1%
10
5am
1%
10
6am
1%
9
7am
2%
9
8am
2%
8
9am
2%
6
10am
3%
7
11am
12%
10
12pm
5%
13
1pm
12%
14
2pm
5%
14
3pm
2%
14
4pm
2%
14
5pm
14
6pm
13
7pm
11
8pm
1%
11
9pm
2%
12
10pm
2%
13
11pm
2%
16
12am
Mon
1%
18
1am
1%
20
2am
1%
21
3am
21
4am
21
5am
20
Conditions in detail
-
Feels like
7°
About what it looks like
-
Dew point
7°
Dry and pleasant
-
Wind
0 km/h
Gusting 0 km/h from NW
-
Pressure
1026 hPa
Rising steadily
-
Visibility
18 km
Clear
-
UV index
0
Peaks at 7 today
-
Cloud cover
0%
—
-
Precipitation today
0.0 mm
None expected
Air quality
US AQI
28
Good
- PM2.5 5 µg/m³
- PM10 5 µg/m³
- Ozone 36 µg/m³
- NO₂ 9 µg/m³
Next 14 days
Pick a day to load its hour-by-hour detail.
Live radar
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Best time to…
Scored hour by hour across the next two days.
-
Go for a run
100Sat 6am–5am
Cool, calm and dry
-
Walk the dog
100Sat 6am–5am
Mild, no downpours, no ice
-
Line-dry laundry
100Sat 8am–6pm
Dry air plus a working breeze
-
Garden work
99Sun 8am–6pm
Mild and dry, sun optional
-
Ride a bike
98Sat 6am–12am
Wind matters more than temperature
-
Stargazing
97Sat 7pm–7am
Clear, dark and calm
-
Golden-hour photos
91Sat 5pm–6pm
Scattered cloud catches the light
-
Patio or BBQ
80Sun 10am–12am
Warm, dry, and not too breezy
Sun & moon
Sunrise
7:17 am
Sunset
6:54 pm
- Day length11h 37m
- Golden hour5:59 pm–6:54 pm
Last quarter
54% illuminated
Full moon in 23 days
Stargazing tonight
Excellent · 75/100
Clearest around 7pm at 3% cloud.
Almanac
20 years of records for Oct 3 (±3 days)
Today is right about normal (−2.3° on the high, −3.2° on the low).
- Normal high18°
- Normal low10°
- Record high 29° 2019
- Record low 3° 2022
- Typical rainfall2.8 mm
- Odds of a wet day36%
Hour-by-hour forecast for Markham
Every hour for the next 48 hours, local time.
| Time | Conditions | Temp | Feels | Chance | Amount | Wind | Humidity |
|---|---|---|---|---|---|---|---|
| Saturday Oct 3 | |||||||
| 6am | Clear sky | 9° | 9° | 0% | — | 6 km/h | 85% |
| 7am | Clear sky | 7° | 6° | 0% | — | 8 km/h | 92% |
| 8am | Clear sky | 8° | 6° | 0% | — | 7 km/h | 89% |
| 9am | Clear sky | 10° | 9° | 0% | — | 8 km/h | 81% |
| 10am | Clear sky | 12° | 12° | 0% | — | 8 km/h | 71% |
| 11am | Clear sky | 14° | 14° | 0% | — | 9 km/h | 62% |
| 12pm | Clear sky | 15° | 15° | 0% | — | 10 km/h | 57% |
| 1pm | Clear sky | 15° | 15° | 0% | — | 10 km/h | 54% |
| 2pm | Clear sky | 16° | 16° | 0% | — | 10 km/h | 53% |
| 3pm | Clear sky | 16° | 16° | 0% | — | 11 km/h | 53% |
| 4pm | Clear sky | 15° | 15° | 0% | — | 11 km/h | 54% |
| 5pm | Clear sky | 15° | 15° | 0% | — | 10 km/h | 56% |
| 6pm | Clear sky | 14° | 14° | 0% | — | 9 km/h | 61% |
| 7pm | Clear sky | 13° | 13° | 0% | — | 8 km/h | 68% |
| 8pm | Clear sky | 12° | 12° | 0% | — | 8 km/h | 74% |
| 9pm | Clear sky | 11° | 11° | 0% | — | 8 km/h | 78% |
| 10pm | Clear sky | 10° | 10° | 0% | — | 8 km/h | 81% |
| 11pm | Clear sky | 10° | 9° | 0% | — | 9 km/h | 83% |
| Sunday Oct 4 | |||||||
| 12am | Clear sky | 10° | 8° | 0% | — | 9 km/h (gusts 20 km/h) | 84% |
| 1am | Clear sky | 9° | 8° | 0% | — | 10 km/h (gusts 21 km/h) | 84% |
| 2am | Partly cloudy | 9° | 8° | 0% | — | 11 km/h (gusts 21 km/h) | 84% |
| 3am | Partly cloudy | 9° | 8° | 0% | — | 11 km/h (gusts 21 km/h) | 84% |
| 4am | Partly cloudy | 9° | 8° | 1% | — | 10 km/h (gusts 20 km/h) | 85% |
| 5am | Partly cloudy | 9° | 8° | 1% | — | 10 km/h | 85% |
| 6am | Partly cloudy | 9° | 8° | 1% | — | 9 km/h | 87% |
| 7am | Partly cloudy | 9° | 8° | 2% | — | 9 km/h | 89% |
| 8am | Partly cloudy | 10° | 9° | 2% | — | 8 km/h | 89% |
| 9am | Partly cloudy | 11° | 11° | 2% | — | 6 km/h | 85% |
| 10am | Partly cloudy | 13° | 13° | 3% | — | 7 km/h | 79% |
| 11am | Partly cloudy | 15° | 15° | 12% | — | 10 km/h | 74% |
| 12pm | Partly cloudy | 16° | 16° | 5% | — | 13 km/h | 71% |
| 1pm | Partly cloudy | 16° | 16° | 12% | — | 14 km/h | 69% |
| 2pm | Partly cloudy | 18° | 18° | 5% | — | 14 km/h (gusts 24 km/h) | 65% |
| 3pm | Partly cloudy | 18° | 18° | 2% | — | 14 km/h | 61% |
| 4pm | Partly cloudy | 19° | 19° | 2% | — | 14 km/h | 58% |
| 5pm | Partly cloudy | 19° | 19° | 0% | — | 14 km/h | 58% |
| 6pm | Partly cloudy | 18° | 18° | 0% | — | 13 km/h | 60% |
| 7pm | Partly cloudy | 16° | 16° | 0% | — | 11 km/h (gusts 22 km/h) | 64% |
| 8pm | Partly cloudy | 15° | 15° | 1% | — | 11 km/h (gusts 23 km/h) | 69% |
| 9pm | Partly cloudy | 14° | 14° | 2% | — | 12 km/h (gusts 26 km/h) | 74% |
| 10pm | Partly cloudy | 14° | 14° | 2% | — | 13 km/h (gusts 33 km/h) | 78% |
| 11pm | Partly cloudy | 13° | 13° | 2% | — | 16 km/h (gusts 41 km/h) | 79% |
| Monday Oct 5 | |||||||
| 12am | Partly cloudy | 13° | 13° | 1% | — | 18 km/h (gusts 44 km/h) | 78% |
| 1am | Partly cloudy | 12° | 12° | 1% | — | 20 km/h (gusts 45 km/h) | 77% |
| 2am | Clear sky | 11° | 11° | 1% | — | 21 km/h (gusts 48 km/h) | 77% |
| 3am | Clear sky | 11° | 11° | 0% | — | 21 km/h (gusts 50 km/h) | 76% |
| 4am | Clear sky | 10° | 10° | 0% | — | 21 km/h (gusts 50 km/h) | 76% |
| 5am | Clear sky | 10° | 7° | 0% | — | 20 km/h (gusts 48 km/h) | 76% |
About this Markham forecast
Updated 2026-10-03 10:54 UTC, and refreshed automatically every few minutes. Forecast data is provided by Visual Crossing; radar frames from RainViewer; the 20-year normals and records from the ERA5 reanalysis archive. No national weather service publishes point alerts here, so only computed watches are shown.
Watches labelled computed are worked out on this site from forecast thresholds and are not official warnings — always defer to your national weather service. Need help reading a number? See the sourced weather guide.
Weather near Markham
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