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

Acton 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 Acton today. Tomorrow looks cloudy around 23°, with a 0% chance of rain.

23°14°
23°12°
23°13°
23°17°
21°15°
21°11°
Todaymodels agreeTomorrowmodels agreeTuesdaymodels agreeWednesdaysplit ±5°Thursdaysplit ±2°Fridaysplit ±5°
Env. CanadaGEM model
23°
Cloudy
Today 23°·Low 14°·Rain 0%
EuropeanECMWF
22°
Light drizzle
Today 22°·Low 14°·Rain 15%
AmericanNOAA GFS
23°
Mostly clear
Today 23°·Low 14°·Rain 2%

The weather map: all three models at once

Env. Canada, European, American side by side around Acton 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
23° 12°
models agree
Tue
Cloudy
23° 13°
models agree
Wed
Light drizzle
23° 17°
±5°
Thu
Drizzle
21° 15°
±2°
Fri
Partly cloudy
21° 11°
±5°
Sat
Showers
24° 13°
±4°
Sun
Light drizzle
23° 13°
±12°
Mon
Mostly clear
17° 10°
±3°
Tue
Mostly clear
19° 12°
models agree
Wed
Cloudy
19° 11°
±4°
Thu
Drizzle
19° 11°
models agree
Fri
Light drizzle
20° 11°
models agree
Sat
Drizzle
17° 11°
models agree

Acton, Ontario is at its warmest in Jul (average highs near 26°C) and coldest in Feb (lows around -7°C), with roughly 1003 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Acton 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.

Acton climate by month

average daytime high and overnight low across a typical year
Jan
-6°
Feb
-7°
Mar
-3°
Apr
13°
May
20°
Jun
24°
14°
Jul
26°
16°
Aug
24°
15°
Sep
22°
13°
Oct
15°
Nov
Dec
-3°

Which forecast is most accurate in Acton?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
EC
Env. Canada ★ Best
89
/100rank #1
81±1.1°C94±2.8 km/t9597% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
European logo
European
85
/100rank #2
90±0.5°C97±1.4 km/t7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
77
/100rank #3
86±0.8°C95±2.5 km/t5374% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°22° to 23°±15%0% to 15% chance
Tomorrow±1°23° to 24°models agree0% to 0% chance
Tue±2°22° to 24°±8%0% to 8% chance
Wed±5°20° to 25°±42%29% to 71% chance
Thu±2°21° to 23°±14%6% to 20% 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 Acton

today, local time
Sunrise
06:49
Sunset
19:47
Daylight
12h 58m

Common questions

What's the weather in Acton today?
On this page we show what Env. Canada, European, American each forecast for Acton 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 Acton today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Acton 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 Acton?
Over the last 30 days, the Env. Canada model has been the most accurate for Acton (CheckWeather Score 89/100), ahead of the European 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 Acton?
July is typically the warmest month in Acton, with average highs around 26°C.
How cold does Acton get?
The coldest month in Acton is February, when overnight lows average about -7°C.
How much rain does Acton get?
Acton sees roughly 1003 mm of precipitation a year, with April usually the wettest month.

Nearby

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