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Every Canadian forecast, compared
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CheckWeather CAGreater Sudbury
Forecast confidence: High · models disagree by 1°C

Greater Sudbury weather

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Clear,much the same tomorrow

Env. Canada, the European and the American model agree on a high near 23° in Greater Sudbury today. Tomorrow looks cloudy around 25°, with a 13% chance of rain.

23°12°
25°12°
20°14°
23°16°
20°11°
20°
Todaymodels agreeTomorrowmodels agreeTuesdaysplit ±5°Wednesdaymodels agreeThursdaysplit ±6°Fridaysplit ±4°
Env. CanadaGEM model
24°
Clear
Today 24°·Low 12°·Rain 0%
EuropeanECMWF
23°
Cloudy
Today 23°·Low 13°·Rain 0%
AmericanNOAA GFS
23°
Mostly clear
Today 23°·Low 10°·Rain 0%

The weather map: all three models at once

Env. Canada, European, American side by side around Greater Sudbury 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
Clear
23° 12°
models agree
Tomorrow
Cloudy
25° 12°
models agree
Tue
Light drizzle
20° 14°
±5°
Wed
Light rain
23° 16°
models agree
Thu
Cloudy
20° 11°
±6°
Fri
Mostly clear
20°
±4°
Sat
Light drizzle
22° 15°
±4°
Sun
Light drizzle
18° 10°
±9°
Mon
Cloudy
15°
±7°
Tue
Cloudy
18°
±5°
Wed
Partly cloudy
20° 10°
±2°
Thu
Cloudy
20° 11°
models agree
Fri
Cloudy
18°
models agree
Sat
Light rain
16°
±3°

Greater Sudbury, Ontario is at its warmest in Jul (average highs near 25°C) and coldest in Feb (lows around -12°C), with roughly 944 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Greater Sudbury 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.

Greater Sudbury climate by month

average daytime high and overnight low across a typical year
Jan
-4°
-11°
Feb
-2°
-12°
Mar
-7°
Apr
10°
-1°
May
19°
Jun
23°
12°
Jul
25°
15°
Aug
24°
14°
Sep
22°
11°
Oct
13°
Nov
-2°
Dec
-1°
-7°

Which forecast is most accurate in Greater Sudbury?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
98
/100rank #1
95±0.3°C98±1.0 km/t100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
82
/100rank #2
88±0.7°C96±2.2 km/t6581% hitNOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
79
/100rank #3
86±0.8°C96±2.1 km/t5877% 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±1°23° to 24°models agree0% to 0% chance
Tomorrow±2°24° to 26°±13%0% to 13% chance
Tue±5°18° to 23°±40%24% to 64% chance
Wed±1°22° to 23°±19%57% to 76% chance
Thu±6°17° to 24°±15%3% to 18% 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 Greater Sudbury

today, local time
Sunrise
06:50
Sunset
19:53
Daylight
13h 3m

Common questions

What's the weather in Greater Sudbury today?
On this page we show what Env. Canada, European, American each forecast for Greater Sudbury 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 Greater Sudbury today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Greater Sudbury 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 Greater Sudbury?
Over the last 30 days, the European model has been the most accurate for Greater Sudbury (CheckWeather Score 98/100), ahead of the American at 82. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Greater Sudbury?
July is typically the warmest month in Greater Sudbury, with average highs around 25°C.
How cold does Greater Sudbury get?
The coldest month in Greater Sudbury is February, when overnight lows average about -12°C.
How much rain does Greater Sudbury get?
Greater Sudbury sees roughly 944 mm of precipitation a year, with April usually the wettest month.

Nearby

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