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

Bolton weather

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Mostly clear,much the same tomorrow

Env. Canada, the European and the American model put Bolton's high today between 22° and 25°, a 2° split. Tomorrow looks cloudy around 24°, with a 6% chance of rain.

23°14°
24°12°
24°14°
24°17°
22°15°
22°11°
Todaysplit ±2°Tomorrowmodels agreeTuesdaymodels agreeWednesdaysplit ±5°Thursdaysplit ±3°Fridaysplit ±6°
Env. CanadaGEM model
25°
Mostly clear
Today 25°·Low 14°·Rain 0%
EuropeanECMWF
23°
Mostly clear
Today 23°·Low 13°·Rain 4%
AmericanNOAA GFS
22°
Mostly clear
Today 22°·Low 14°·Rain 5%

The weather map: all three models at once

Env. Canada, European, American side by side around Bolton 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
Mostly clear
23° 14°
±2°
Tomorrow
Cloudy
24° 12°
models agree
Tue
Cloudy
24° 14°
models agree
Wed
Cloudy
24° 17°
±5°
Thu
Light drizzle
22° 15°
±3°
Fri
Partly cloudy
22° 11°
±6°
Sat
Drizzle
25° 13°
±4°
Sun
Light drizzle
24° 13°
±14°
Mon
Clear
18° 11°
±3°
Tue
Clear
19° 12°
models agree
Wed
Partly cloudy
19° 11°
±5°
Thu
Light drizzle
20° 10°
models agree
Fri
Light drizzle
20° 11°
models agree
Sat
Heavy drizzle
18° 12°
models agree

Bolton, Ontario is at its warmest in Jul (average highs near 27°C) and coldest in Feb (lows around -7°C), with roughly 1014 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Bolton 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.

Bolton climate by month

average daytime high and overnight low across a typical year
Jan
-6°
Feb
-7°
Mar
-4°
Apr
13°
May
20°
Jun
24°
13°
Jul
27°
16°
Aug
24°
15°
Sep
23°
13°
Oct
16°
Nov
Dec
-3°

Which forecast is most accurate in Bolton?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
91
/100rank #1
94±0.3°C97±1.5 km/t8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
76
/100rank #2
77±1.3°C91±4.3 km/t6581% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
American logo
American
69
/100rank #3
80±1.1°C96±2.1 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°22° to 25°±5%0% to 5% chance
Tomorrow±2°23° to 25°±6%0% to 6% chance
Tue±1°23° to 24°±4%5% to 9% chance
Wed±5°21° to 26°±20%58% to 78% chance
Thu±3°22° to 24°±9%10% to 19% 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 Bolton

today, local time
Sunrise
06:48
Sunset
19:46
Daylight
12h 58m

Common questions

What's the weather in Bolton today?
On this page we show what Env. Canada, European, American each forecast for Bolton 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 Bolton today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Bolton 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 Bolton?
Over the last 30 days, the European model has been the most accurate for Bolton (CheckWeather Score 91/100), ahead of the Env. Canada at 76. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Bolton?
July is typically the warmest month in Bolton, with average highs around 27°C.
How cold does Bolton get?
The coldest month in Bolton is February, when overnight lows average about -7°C.
How much rain does Bolton get?
Bolton sees roughly 1014 mm of precipitation a year, with April usually the wettest month.

Nearby

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