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Every Canadian forecast, compared
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CheckWeather CAArnprior
Forecast confidence: High · models disagree by 2°C

Arnprior weather

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Cloudy,much the same tomorrow

Env. Canada, the European and the American model agree on a high near 23° in Arnprior today. Tomorrow looks cloudy around 24°, with a 12% chance of rain.

23°14°
24°13°
21°15°
21°17°
22°14°
19°11°
Todaymodels agreeTomorrowmodels agreeTuesdaysplit ±4°Wednesdaymodels agreeThursdaysplit ±3°Fridaysplit ±5°
Env. CanadaGEM model
24°
Clear
Today 24°·Low 14°·Rain 13%
EuropeanECMWF
22°
Cloudy
Today 22°·Low 15°·Rain 2%
AmericanNOAA GFS
22°
Cloudy
Today 22°·Low 15°·Rain 7%

The weather map: all three models at once

Env. Canada, European, American side by side around Arnprior and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Cloudy
23° 14°
models agree
Tomorrow
Cloudy
24° 13°
models agree
Tue
Cloudy
21° 15°
±4°
Wed
Showers
21° 17°
models agree
Thu
Drizzle
22° 14°
±3°
Fri
Mostly clear
19° 11°
±5°
Sat
Showers
24° 14°
±5°
Sun
Heavy drizzle
23° 13°
±10°
Mon
Clear
18° 11°
±7°
Tue
Clear
17° 12°
±4°
Wed
Clear
19° 11°
±6°
Thu
Cloudy
20° 10°
models agree
Fri
Mostly clear
19° 10°
models agree
Sat
Rain
18° 10°
±3°

Arnprior, Ontario is at its warmest in Jul (average highs near 26°C) and coldest in Feb (lows around -10°C), with roughly 1057 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Arnprior right now, and see exactly where they disagree.

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.

Arnprior climate by month

average daytime high and overnight low across a typical year
Jan
-2°
-9°
Feb
-10°
Mar
-4°
Apr
13°
May
20°
Jun
24°
14°
Jul
26°
18°
Aug
24°
16°
Sep
23°
13°
Oct
15°
Nov
Dec
-6°

Which forecast is most accurate in Arnprior?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
90
/100rank #1
95±0.3°C95±2.3 km/t8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
85
/100rank #2
85±0.8°C96±2.0 km/t7687% hitNOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
83
/100rank #3
78±1.2°C91±4.3 km/t8290% hitEnvironment and Climate Change CanadaDorval, Québec, Canada

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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°22° to 24°±11%2% to 13% chance
Tomorrow±1°23° to 24°±12%0% to 12% chance
Tue±4°18° to 22°±2%12% to 14% chance
Wed±1°20° to 22°±11%75% to 86% chance
Thu±3°20° to 23°±14%23% to 37% 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 Arnprior

today, local time
Sunrise
06:33
Sunset
19:34
Daylight
13h 1m

Common questions

What's the weather in Arnprior today?
On this page we show what Env. Canada, European, American each forecast for Arnprior 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 Arnprior today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Arnprior 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 Arnprior?
Over the last 30 days, the European model has been the most accurate for Arnprior (CheckWeather Score 90/100), ahead of the American at 85. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Arnprior?
July is typically the warmest month in Arnprior, with average highs around 26°C.
How cold does Arnprior get?
The coldest month in Arnprior is February, when overnight lows average about -10°C.
How much rain does Arnprior get?
Arnprior sees roughly 1057 mm of precipitation a year, with August usually the wettest month.

Nearby

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