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United Counties of Stormont, Dundas and Glengarry
United Counties of Stormont, Dundas and Glengarry
Ontario, Canada

Cornwall Island

Cornwall Island is a locality in Ontario, Canada. The climate is classified as warm-summer humid continental (Köppen Dfb), with warm summers, cold winters and precipitation in every season.

Now11°C
Best timeMay–Jun · Sep
Population–
Local time17:31
45.01° N, 74.68° WElevation 51 mUTC−4 · Eastern Daylight Time
The year in Cornwall Islandweather score
JanFebMarAprMayJunJulAugSepOctNovDec43October
October: high / low14° / 4°
Rain this month99mm
Best timeMay–Jun · Sep

Best: May–Jun · Sep. Warmth, sunshine and dry days, month by month.

Cornwall Island at a glance

Best time to visitMay–Jun · Sep

The months with the highest weather score

Warmest month27°C

Average high in July

Coolest month-14°C

Average low in January

Wettest monthDecember

77 mm of rain

Driest monthFebruary

61 mm of rain

Monuments nearby1+

within 34 km

Weather in Cornwall Island

Now and the next ten days. The 14 and 30-day outlooks are one click away.

14-day forecast
11°C

Cloudy · wind 14 km/h · humidity 67%

Today hour by hour
Today26 Oct12°3°2.2 mm
Tue27 Oct8°0°
Wed28 Oct10°-2°
Thu29 Oct19°5°7.1 mm
Fri30 Oct13°4°
Sat31 Oct12°2°
Sun1 Nov15°1°
Mon2 Nov15°7°14.2 mm
Tue3 Nov9°2°
Wed4 Nov11°4°

When to go to Cornwall Island

Each month's weather score (warmth, sun, dry days) with its temperatures and rain.

Climate month by month
JanFebMarAprMayJunJulAugSepOctNovDec
Score162018326764576174431615
High-4°-2°4°12°20°25°27°26°22°14°7°0°
Low-14°-13°-7°0°7°12°15°14°9°4°-2°-9°
Rain (mm)7261667687991038798999077
Wet days161314131215171510141618

What's on in Cornwall Island

Concerts, football matches, the public holidays ahead and the town's festivals through the year.

Monuments and museums in Cornwall Island

All monuments

Nature around Cornwall Island

Nature in Canada

Wildlife in October

The birds and mammals of Canada seen most this month, compared with the rest of their year.

The sky over Cornwall Island

Eclipses and meteor showers

Earthquakes around Cornwall Island

The last 30 days within 300 km, and the record since 1950.

Earthquakes

Strongest nearby since 1950

5.3Val-des-Bois 10 km →2010 · 115 km
5.3Black Brook 7 km ↗2002 · 96 km
5.1Newcomb 8 km ↙1983 · 124 km

Towns and villages around Cornwall Island

Each with its own page: weather, climate and the best time to visit.

Places near Cornwall Island

Frequently asked questions

When is the best time to visit Cornwall Island?
Based on 30-year climate normals, May, June and September offer the best balance of comfortable temperatures, low rainfall and sunshine in Cornwall Island.
What is the hottest month in Cornwall Island?
July is the warmest month, with average highs of 27°C and lows of 15°C.
What is the coldest month in Cornwall Island?
January is the coldest month, with average highs of -4°C and lows of -14°C.
What is the rainiest month in Cornwall Island?
December is the wettest month with about 77 mm of precipitation on 18 wet days.