Cities / Canada / Ontario

23°

☀️ Grantham weather

Clear sky. .

Feels like 26° Wind 10 km/h N Humidity 73% Pressure 1019 hPa UV 3 Air Fair ☀ 06:29 - 20:10

Right now it is 23° in Grantham with clear skies, it feels more like 26° and today's high is 24° with an overnight low of 14°. The sun rises at 06:29 and sets at 20:10, giving 13h 41m of daylight. Over the coming week highs range from 19° to 28°.

Grantham is in Ontario, Canada, sitting 90 m above sea level. Local time is America/Toronto (UTC−4), and every time on this page is shown in it.

Next 24 hours - temperature

16° 21° 26° 26° 16° 12:00 · 23° · 0 mm 13:00 · 23.4° · 0 mm 14:00 · 23.8° · 0 mm 15:00 · 24.1° · 0 mm 16:00 · 24.1° · 0 mm 17:00 · 23.6° · 0 mm 18:00 · 22.9° · 0 mm 19:00 · 22.2° · 0 mm 20:00 · 20.7° · 0 mm 21:00 · 19.7° · 0 mm 22:00 · 18.9° · 0 mm 23:00 · 18.5° · 0 mm 00:00 · 17.4° · 0 mm 01:00 · 17.3° · 0 mm 02:00 · 17° · 0 mm 03:00 · 16.8° · 0 mm 04:00 · 16.8° · 0 mm 05:00 · 16.5° · 0 mm 06:00 · 16.4° · 0 mm 07:00 · 16.6° · 0 mm 08:00 · 18.3° · 0 mm 09:00 · 20.1° · 0 mm 10:00 · 23.2° · 0 mm 11:00 · 25.5° · 0 mm

Precipitation

12:00 · 0 mm 12:00 13:00 · 0 mm 14:00 · 0 mm 15:00 · 0 mm 15:00 16:00 · 0 mm 17:00 · 0 mm 18:00 · 0 mm 18:00 19:00 · 0 mm 20:00 · 0 mm 21:00 · 0 mm 21:00 22:00 · 0 mm 23:00 · 0 mm 00:00 · 0 mm 00:00 01:00 · 0 mm 02:00 · 0 mm 03:00 · 0 mm 03:00 04:00 · 0 mm 05:00 · 0 mm 06:00 · 0 mm 06:00 07:00 · 0 mm 08:00 · 0 mm 09:00 · 0 mm 09:00 10:00 · 0 mm 11:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
12:00 ☀️ 23° 24.5° - Clear sky
13:00 ☀️ 23.4° 24.1° - Clear sky
14:00 ☀️ 23.8° 23.6° - Clear sky
15:00 ☀️ 24.1° 23.6° - Clear sky
16:00 ☀️ 24.1° 23.2° - Clear sky
17:00 ☀️ 23.6° 22.7° - Clear sky
18:00 ☀️ 22.9° 21.4° - Clear sky
19:00 ☀️ 22.2° 20.5° - Clear sky
20:00 ☀️ 20.7° 19.1° - Clear sky
21:00 ☀️ 19.7° 18° - Clear sky
22:00 ☀️ 18.9° 17.1° - Clear sky
23:00 ☀️ 18.5° 15.9° - Clear sky

Next 16 days

Today☀️ 24°14° Sat 22🌧️ 27°16°7.2mm Sun 23🌧️ 21°16°96.6mm Mon 24🌦️ 19°12°5.2mm Tue 25☀️ 24°13° Wed 26☁️ 25°15° Thu 27🌦️ 28°18°0.9mm Fri 28☁️ 22°18° Sat 29☀️ 20°14° Sun 30🌤️ 23°13° Mon 31☁️ 30°17°0.3mm Tue 1🌧️ 33°23°9mm Wed 2🌧️ 25°19°4.2mm Thu 3🌧️ 27°17°10.5mm Fri 4☀️ 25°19° Sat 5☁️ 25°20°0.9mm
☀️ TodayAugust 21st Avg 19° Low 14° at 06:00 High 24° at 15:00 Wind ~19 km/h
Clear Clear
00:00 17°
02:00 16°
04:00 15°
06:00 14°
08:00 16°
10:00 22°
12:00 23°
14:00 24°
16:00 24°
18:00 23°
20:00 21°
22:00 19°
🌧️ SaturdayAugust 22nd Avg 19° Low 16° at 06:00 High 27° at 12:00 7.2 mm rain Wind ~27 km/h
Clear Cloudy Cloudy
00:00 17°
02:00 17°
04:00 17°
06:00 16°
08:00 18°
10:00 23°
12:00 27°
14:00 21°
16:00 19° 7.2mm
18:00 20°
20:00 19°
22:00 18°
🌧️ SundayAugust 23rd Avg 18° Low 16° at 23:00 High 21° at 11:00 96.6 mm rain Feels 19° Wind ~30 km/h
Rain Cloudy Rain
00:00 19°
02:00 19° 1.8mm
04:00 18°
06:00 17°
08:00 17°
10:00 19°
12:00 20° 1.8mm
14:00 20° 0.7mm
16:00 17° 0.6mm
18:00 19° 0.6mm
20:00 17°
22:00 16° 0.1mm
🌦️ MondayAugust 24th Avg 15° Low 12° at 07:00 High 19° at 17:00 5.2 mm rain Feels 16° Wind ~28 km/h
Rain Rain Rain
00:00 15°
02:00 15°
04:00 13° 0.7mm
06:00 12° 0.1mm
08:00 13°
10:00 14° 0.7mm
12:00 15° 0.1mm
14:00 16° 0.2mm
16:00 18°
18:00 18° 0.3mm
20:00 17° 0.3mm
22:00 17°
☀️ TuesdayAugust 25th Avg 18° Low 13° at 07:00 High 24° at 17:00 Wind ~20 km/h
Clear Cloudy
00:00 16°
02:00 16°
04:00 15°
06:00 13°
08:00 15°
10:00 18°
12:00 20°
14:00 22°
16:00 24°
18:00 24°
20:00 19°
22:00 18°
☁️ WednesdayAugust 26th Avg 20° Low 15° at 05:00 High 25° at 17:00 Wind ~12 km/h
Clear Cloudy
00:00 18°
02:00 17°
04:00 16°
06:00 16°
08:00 17°
10:00 21°
12:00 24°
14:00 24°
16:00 25°
18:00 24°
20:00 21°
22:00 21°
🌦️ ThursdayAugust 27th Avg 23° Low 18° at 04:00 High 28° at 16:00 0.9 mm rain Feels 26° Wind ~20 km/h
Clear Partly Cloudy Clear Rain
00:00 20°
02:00 19°
04:00 18°
06:00 18°
08:00 20°
10:00 23°
12:00 26°
14:00 28°
16:00 28°
18:00 27°
20:00 23°
22:00 21° 0.3mm
☁️ FridayAugust 28th Avg 20° Low 18° at 05:00 High 22° at 17:00 Wind ~22 km/h
Partly Cloudy Clear Partly Cloudy Cloudy Clear
00:00 20°
02:00 20°
04:00 19°
06:00 18°
08:00 19°
10:00 19°
12:00 20°
14:00 21°
16:00 22°
18:00 21°
20:00 20°
22:00 19°
☀️ SaturdayAugust 29th Avg 17° Low 14° at 23:00 High 20° at 16:00 Feels 17° Wind ~21 km/h
Clear
00:00 18°
02:00 18°
04:00 16°
06:00 15°
08:00 16°
10:00 17°
12:00 18°
14:00 19°
16:00 20°
18:00 19°
20:00 16°
22:00 15°
🌤️ SundayAugust 30th Avg 18° Low 13° at 05:00 High 23° at 15:00 Feels 20° Wind ~14 km/h
Cloudy Clear Partly Cloudy
00:00 14°
02:00 14°
04:00 13°
06:00 13°
08:00 14°
10:00 19°
12:00 22°
14:00 23°
16:00 23°
18:00 21°
20:00 18°
22:00 17°
☁️ MondayAugust 31st Avg 23° Low 17° at 04:00 High 30° at 16:00 0.3 mm rain Feels 28° Wind ~32 km/h
Partly Cloudy Cloudy Rain
00:00 17°
02:00 17°
04:00 17°
06:00 18°
08:00 20°
10:00 25°
12:00 28°
14:00 28°
16:00 30°
18:00 28° 0.1mm
20:00 25° 0.1mm
22:00 25°
🌧️ TuesdaySeptember 1st Avg 27° Low 23° at 23:00 High 33° at 14:00 9 mm rain Feels 31° Wind ~35 km/h
Clear Rain
00:00 25°
02:00 26°
04:00 25°
06:00 25°
08:00 26°
10:00 29°
12:00 32° 0.3mm
14:00 33° 0.3mm
16:00 31° 0.1mm
18:00 28° 0.1mm
20:00 24° 0.1mm
22:00 23° 2.5mm
🌧️ WednesdaySeptember 2nd Avg 21° Low 19° at 07:00 High 25° at 17:00 4.2 mm rain Wind ~15 km/h
Rain Cloudy Partly Cloudy
00:00 22° 1mm
02:00 21° 1mm
04:00 20° 0.3mm
06:00 19° 0.1mm
08:00 19° 0.1mm
10:00 20°
12:00 21°
14:00 23°
16:00 24°
18:00 24°
20:00 22°
22:00 21°
🌧️ ThursdaySeptember 3rd Avg 21° Low 17° at 06:00 High 27° at 17:00 10.5 mm rain Wind ~18 km/h
Clear Rain
00:00 19°
02:00 18°
04:00 17°
06:00 17° 0.1mm
08:00 18° 0.1mm
10:00 21° 0.2mm
12:00 23° 0.2mm
14:00 25° 0.2mm
16:00 27° 0.1mm
18:00 26° 0.5mm
20:00 23° 0.5mm
22:00 23° 2.4mm
☀️ FridaySeptember 4th Avg 22° Low 19° at 05:00 High 25° at 15:00 Wind ~17 km/h
Clear Clear
00:00 22°
02:00 21°
04:00 20°
06:00 19°
08:00 20°
10:00 21°
12:00 23°
14:00 25°
16:00 25°
18:00 24°
20:00 22°
22:00 21°
☁️ SaturdaySeptember 5th Avg 22° Low 20° at 04:00 High 25° at 20:00 0.9 mm rain Wind ~24 km/h
Rain Cloudy
00:00 20° 0.1mm
02:00 20° 0.1mm
04:00 20° 0.1mm
06:00 20° 0.1mm
08:00 20° 0.1mm
10:00 22°
12:00 23°
14:00 24°
16:00 23°
18:00 23°
20:00 25°
22:00 23°

Sun

☀️ Sunrise 06:29 · Sunset 20:10

13h 41m of daylight · America/Toronto

Air quality

PM2.5 11.7 µg/m³ - Fair

Fine for almost everyone; unusually sensitive people may notice it on a long run.

Source: Copernicus CAMS, updated hourly.

Nearby

Port Weller · 1.3 km Weller Park · 1.7 km Carlton Park · 1.8 km Ryderville · 2.1 km Port Weller East · 2.3 km Facer · 3.3 km

Tools for Grantham

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Grantham weather

Will it rain in Grantham today?

No rain is in the forecast for Grantham today.

What is the temperature in Grantham right now?

It is 23° in Grantham right now, though it feels closer to 26°. Today runs between a low of 14° and a high of 24°.

What time is sunrise and sunset in Grantham?

The sun rises at 06:29 and sets at 20:10 local time in Grantham today, giving 13h 41m of daylight.

What is the air quality in Grantham?

PM2.5 in Grantham is currently 11.7 µg/m³, which counts as Fair on the European air-quality index. Fine for almost everyone; unusually sensitive people may notice it on a long run.

How accurate is the Grantham forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Grantham best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

This page is a live API demo.

Everything above came from one call to the WeatherMetro API - free tier, 100,000 calls a month.

Read the docs