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Weather in Cornwall (Ontario)

Ontario, 59 m · continuously updated

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Temperature · last 4 and next 28 hours

Cornwall (Ontario) weather: the next 24 hours

Updated hourly.

Cornwall (Ontario) 14-day forecast

Two-week trend.

Rain radar

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Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Cornwall (Ontario)

Neighbouring towns, as the crow flies.

7-day forecast for Cornwall (Ontario)

Today (Thursday 15 Oct) in Cornwall (Ontario): overcast, 4 to 10 °C, precipitation 0.0 mm (4 %), wind up to 14 km/h. Tomorrow: heavy rain, 5 to 16 °C.

DayWeatherMinMaxPrecip.Wind
Todayovercast4 °C10 °C0.0 mm14 km/h
Tomorrowheavy rain5 °C16 °C24.1 mm28 km/h
Sat 17 Octovercast0 °C6 °C0.0 mm23 km/h
Sun 18 Octovercast1 °C14 °C0.0 mm25 km/h
Mon 19 Octovercast8 °C16 °C0.0 mm23 km/h
Tue 20 Octovercast6 °C16 °C0.0 mm17 km/h
Wed 21 Octpartly cloudy3 °C10 °C0.0 mm10 km/h

Forecast updated on 15.10.2026 at 11:44 (Open-Meteo model, elevation 59 m). The live block at the top of the page is refreshed hourly and covers 14 days.

Tomorrow's weather in Cornwall (Ontario)

Tomorrow, Friday 16 Oct, in Cornwall (Ontario): heavy rain, from 5 to 16 °C, 24.1 mm of precipitation (probability 97 %), wind up to 28 km/h.

HourWeatherTemp.Precip.ChanceWind
00:00overcast7 °C0.0 mm6 %13 km/h
03:00overcast7 °C0.0 mm29 %11 km/h
06:00heavy rain7 °C8.3 mm97 %14 km/h
09:00overcast9 °C0.0 mm82 %7 km/h
12:00overcast11 °C0.0 mm61 %6 km/h
15:00light drizzle14 °C0.4 mm31 %28 km/h
18:00overcast8 °C0.0 mm25 %21 km/h
21:00overcast5 °C0.0 mm4 %18 km/h

Frequently asked questions

Will it rain tomorrow in Cornwall (Ontario)?

Yes: 24.1 mm expected, probability 97 %.

How warm will it be tomorrow in Cornwall (Ontario)?

Between 5 and 16 °C.

The weekend

This weekend in Cornwall (Ontario): Saturday overcast, 0 to 6 °C, Sunday overcast, 1 to 14 °C.

DayWeatherMinMaxPrecip.Wind
Sat 17 Octovercast0 °C6 °C0.0 mm23 km/h
Sun 18 Octovercast1 °C14 °C0.0 mm25 km/h

Hour by hour

The next 48 hours in Cornwall (Ontario), hour by hour: temperature from 0 to 16 °C, 24.1 mm of rain expected.

HourWeatherTemp.Precip.ChanceWind
11:00sunny9 °C0.0 mm0 %7 km/h
12:00sunny9 °C0.0 mm0 %7 km/h
13:00sunny10 °C0.0 mm0 %7 km/h
14:00overcast10 °C0.0 mm0 %6 km/h
15:00overcast10 °C0.0 mm0 %4 km/h
16:00overcast10 °C0.0 mm0 %4 km/h
17:00overcast10 °C0.0 mm0 %4 km/h
18:00overcast9 °C0.0 mm0 %6 km/h
19:00overcast7 °C0.0 mm0 %7 km/h
20:00overcast6 °C0.0 mm0 %7 km/h
21:00overcast6 °C0.0 mm0 %8 km/h
22:00overcast7 °C0.0 mm1 %12 km/h
23:00overcast7 °C0.0 mm4 %14 km/h
00:00overcast7 °C0.0 mm6 %13 km/h
01:00overcast7 °C0.0 mm5 %14 km/h
02:00overcast7 °C0.0 mm7 %14 km/h
03:00overcast7 °C0.0 mm29 %11 km/h
04:00light rain7 °C1.4 mm72 %10 km/h
05:00rain7 °C6.8 mm91 %10 km/h
06:00heavy rain7 °C8.3 mm97 %14 km/h
07:00rain8 °C2.9 mm94 %14 km/h
08:00drizzle8 °C0.7 mm90 %9 km/h
09:00overcast9 °C0.0 mm82 %7 km/h
10:00drizzle9 °C0.7 mm65 %3 km/h
11:00drizzle9 °C0.7 mm60 %3 km/h
12:00overcast11 °C0.0 mm61 %6 km/h
13:00light rain14 °C2.2 mm56 %16 km/h
14:00overcast16 °C0.0 mm37 %20 km/h
15:00light drizzle14 °C0.4 mm31 %28 km/h
16:00overcast10 °C0.0 mm51 %28 km/h
17:00overcast9 °C0.0 mm38 %23 km/h
18:00overcast8 °C0.0 mm25 %21 km/h
19:00overcast7 °C0.0 mm10 %21 km/h
20:00overcast6 °C0.0 mm7 %20 km/h
21:00overcast5 °C0.0 mm4 %18 km/h
22:00overcast5 °C0.0 mm3 %19 km/h
23:00overcast5 °C0.0 mm9 %14 km/h
00:00overcast4 °C0.0 mm9 %14 km/h
01:00overcast4 °C0.0 mm9 %14 km/h
02:00overcast4 °C0.0 mm9 %19 km/h
03:00overcast4 °C0.0 mm1 %19 km/h
04:00overcast3 °C0.0 mm1 %21 km/h
05:00sunny2 °C0.0 mm1 %19 km/h
06:00sunny1 °C0.0 mm1 %21 km/h
07:00sunny0 °C0.0 mm1 %17 km/h
08:00sunny0 °C0.0 mm1 %20 km/h
09:00sunny1 °C0.0 mm0 %21 km/h
10:00sunny2 °C0.0 mm0 %23 km/h

Location of Cornwall (Ontario)

Cornwall (Ontario) lies at 59 m, 145 m below the average of the 187 places we cover in Ontario (204 m). That makes it the 6th lowest of the 187. The main town, Toronto, lies 399 km to the west. The nearest places we cover are Saint-Zotique (46 km to the north-east), Les Coteaux (49 km to the north-east), Embrun (51 km to the north-west) and Coteau-du-Lac (53 km to the north-east). With about 48,821 inhabitants according to GeoNames, Cornwall (Ontario) is the 50th largest of the 187 places we cover in Ontario.