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CheckWeather CASept-Iles
Forecast confidence: High · models disagree by 2°C

Sept-Iles weather

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Cloudy,much the same tomorrow

Env. Canada, the European and the American model agree on a high near 12° in Sept-Iles today. Tomorrow looks cloudy around 11°, with a 47% chance of rain.

12°
11°
12°
14°
16°
17°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaysplit ±2°Wednesdaysplit ±5°Thursdaymodels agree
Env. CanadaGEM model
12°
Clear
Today 12°·Low ·Rain 0%
EuropeanECMWF
14°
Cloudy
Today 14°·Low ·Rain 0%
AmericanNOAA GFS
12°
Cloudy
Today 12°·Low ·Rain 1%
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Sept-Iles weather in numbers

measured normals and 10 years of recorded weather

Sept-Iles swings 36°C across the year, from 21°C highs in July to -15°C lows in February, and August is usually the wettest month in a year that brings about 1088 mm of precipitation. Over 10 years of recorded weather it averages 2 days a year at 25°C or above, 172 frost nights, and rain on 142 days.

Warmest month
July
21°C average high
Coldest month
February
-15°C average low
Wettest month
August
1088 mm a year
Comfortable
3 months
June, July and September
Residents
29,000
share this forecast
Most accurate here
European
87/100 CheckWeather Score
Warm days
2 days
a year at 25°C or above
Frost nights
172 nights
a year below 0°C
Rain days
142 days
a year with 1 mm or more

Day counts are from the ERA5 reanalysis for Sept-Iles’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

Env. Canada, European, American side by side around Sept-Iles and nearby towns.Live rain radar →
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Sept-Iles hourly forecast: 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

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Sept-Iles 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Cloudy
12°
models agree
Tomorrow
Cloudy
11°
models agree
Mon
Light drizzle
12°
models agree
Tue
Clear
14°
±2°
Wed
Clear
16°
±5°
Thu
Clear
17°
models agree
Fri
Mostly clear
17°
±4°
Sat
Clear
15°
models agree
Sun
Clear
16°
models agree
Mon
Drizzle
16°
±5°
Tue
Drizzle
18°
±3°
Wed
Cloudy
16°
models agree
Thu
Light rain
13° 10°
±3°
Fri
Drizzle
14°
models agree

Sept-Iles, Quebec is at its warmest in Jul (average highs near 21°C) and coldest in Feb (lows around -15°C), with roughly 1088 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Sept-Iles 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.

Sept-Iles climate by month

average daytime high and overnight low across a typical year
Jan
-6°
-14°
Feb
-6°
-15°
Mar
-6°
Apr
-3°
May
11°
Jun
18°
11°
Jul
21°
15°
Aug
19°
13°
Sep
17°
11°
Oct
11°
Nov
-3°
Dec
-2°
-10°

Which forecast is most accurate in Sept-Iles?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
87
/100rank #1
91±0.5°C96±1.8 km/t7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
85
/100rank #2
86±0.8°C95±2.5 km/t7687% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
American logo
American
75
/100rank #3
63±2.0°C93±3.4 km/t7687% 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 1304 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±2°12° to 14°±1%0% to 1% chance
Tomorrow±2°10° to 12°±29%18% to 47% chance
Mon±1°12° to 12°±44%19% to 63% chance
Tue±2°13° to 16°±8%0% to 8% chance
Wed±5°14° to 20°models agree0% to 0% 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 Sept-Iles

today, local time
Sunrise
06:07
Sunset
18:30
Daylight
12h 23m

Common questions

What's the weather in Sept-Iles today?
On this page we show what Env. Canada, European, American each forecast for Sept-Iles 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 Sept-Iles today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Sept-Iles 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 Sept-Iles?
Over the last 30 days, the European model has been the most accurate for Sept-Iles (CheckWeather Score 87/100), ahead of the Env. Canada 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 Sept-Iles?
July is typically the warmest month in Sept-Iles, with average highs around 21°C.
How cold does Sept-Iles get?
The coldest month in Sept-Iles is February, when overnight lows average about -15°C.
How much rain does Sept-Iles get?
Sept-Iles sees roughly 1088 mm of precipitation a year, with August usually the wettest month.

Nearby

More CA weather