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CheckWeather CACornwall
Forecast confidence: High · models disagree by 1°C

Cornwall weather

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Showers,rain likely tomorrow

Env. Canada, the European and the American model agree on a high near 15° in Cornwall today. Tomorrow looks light drizzle around 16°, with a 85% chance of rain.

15°12°
16°12°
16°11°
20°14°
18°12°
17°11°
Todaymodels agreeTomorrowmodels agreeWednesdaymodels agreeThursdaymodels agreeFridaymodels agreeSaturdaysplit ±5°
Env. CanadaGEM model
10°
Clear
Feels 8° · Wind 14 km/h · Humidity 94%
EuropeanECMWF
12°
Clear
Feels 11° · Wind 11 km/h · Humidity 89%
AmericanNOAA GFS
11°
Clear
Feels 10° · Wind 10 km/h · Humidity 91%

Latest for Cornwall: Env. Canada (GEM model): 10° Clear · European (ECMWF): 12° Clear · American (NOAA GFS): 11° Clear.

The weather map: all three models at once

Env. Canada, European, American side by side around Cornwall and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

Loading the three models…

14-day forecast

where the models agree, and where they split
Today
Showers
15° 12°
models agree
Tomorrow
Light drizzle
16° 12°
models agree
Wed
Partly cloudy
16° 11°
models agree
Thu
Light rain
20° 14°
models agree
Fri
Light drizzle
18° 12°
models agree
Sat
Cloudy
17° 11°
±5°
Sun
Light drizzle
19° 13°
±3°
Mon
Light drizzle
19° 14°
±4°
Tue
Partly cloudy
18° 11°
±4°
Wed
Cloudy
19° 11°
±4°
Thu
Cloudy
17° 10°
models agree
Fri
Light drizzle
16° 10°
±3°
Sat
Cloudy
16° 10°
±4°
Sun
Cloudy
16° 10°
±3°

Cornwall is a small town of about 6,574 people in Prince Edward Island, sitting at 46.2°N in a temperate climate zone. Env. Canada, European, American each forecast Cornwall with their own physics, so we line all three up and flag where they disagree. Nearby towns include Downtown Charlottetown, Charlottetown, Sherwood.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in Canada before you trust any single number.

Which forecast is most accurate in Cornwall?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
97
/100rank #1
94±0.3°C96±2.0 km/t100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
73
/100rank #2
91±0.5°C95±2.4 km/t3665% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
American logo
American
69
/100rank #3
82±1.0°C94±3.0 km/t3665% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1302 cities. Lower error means a higher score. See which forecast model is most accurate in Canada, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in Canada? Give each 1 to 5 stars.

Env. CanadaGEM model
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EuropeanECMWF
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AmericanNOAA GFS
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°15° to 15°±41%59% to 100% chance
Tomorrowmodels agree16° to 16°±42%43% to 85% chance
Wed±2°16° to 17°±23%20% to 43% chance
Thu±1°20° to 21°±33%62% to 95% chance
Fri±1°17° to 19°±27%11% to 38% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Cornwall

today, local time
Sunrise
06:41
Sunset
19:40
Daylight
12h 59m

Common questions

What's the weather in Cornwall today?
On this page we show what Env. Canada, European, American each forecast for Cornwall today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Cornwall today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Cornwall and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Cornwall?
Over the last 30 days, the European model has been the most accurate for Cornwall (CheckWeather Score 97/100), ahead of the Env. Canada at 73. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.

Nearby

More CA weather