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CheckWeather CASioux Lookout
Forecast confidence: High · models disagree by 1°C

Sioux Lookout weather

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Cloudy,rain likely tomorrow

Env. Canada, the European and the American model agree on a high near 18° in Sioux Lookout today. Tomorrow looks rain around 16°, with a 100% chance of rain.

18°
16°11°
14°
16°
17°
18°
Todaymodels agreeTomorrowsplit ±2°Sundaymodels agreeMondaysplit ±3°Tuesdaymodels agreeWednesdaysplit ±3°
Env. CanadaGEM model
17°
Cloudy
Today 17°·Low ·Rain 1%
EuropeanECMWF
17°
Cloudy
Today 17°·Low ·Rain 2%
AmericanNOAA GFS
18°
Cloudy
Today 18°·Low ·Rain 7%
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Sioux Lookout weather in numbers

from 30 years of measured normals

Sioux Lookout swings 37°C across the year, from 23°C highs in July to -14°C lows in January, and August is usually the wettest month in a year that brings about 737 mm of precipitation.

Warmest month
July
23°C average high
Coldest month
January
-14°C average low
Wettest month
August
737 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
4 months
May, June, July and September
Residents
5,839
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The weather map: all three models at once

Env. Canada, European, American side by side around Sioux Lookout and nearby towns.Live rain radar →
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Sioux Lookout 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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Sioux Lookout 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Cloudy
18°
models agree
Tomorrow
Rain
16° 11°
±2°
Sun
Cloudy
14°
models agree
Mon
Cloudy
16°
±3°
Tue
Clear
17°
models agree
Wed
Mostly clear
18°
±3°
Thu
Mostly clear
19°
±5°
Fri
Light drizzle
20° 11°
±2°
Sat
Drizzle
19° 12°
±2°
Sun
Light drizzle
17° 11°
±3°
Mon
Cloudy
15°
±8°
Tue
Cloudy
14°
±5°
Wed
Cloudy
13°
models agree
Thu
Light drizzle
12°
±6°

Sioux Lookout, Ontario is at its warmest in Jul (average highs near 23°C) and coldest in Jan (lows around -14°C), with roughly 737 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Sioux Lookout 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.

Sioux Lookout climate by month

average daytime high and overnight low across a typical year
Jan
-9°
-14°
Feb
-6°
-14°
Mar
-4°
-11°
Apr
-4°
May
17°
Jun
22°
13°
Jul
23°
15°
Aug
22°
15°
Sep
21°
13°
Oct
10°
Nov
-3°
Dec
-4°
-10°

Which forecast is most accurate in Sioux Lookout?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
91
/100rank #1
96±0.2°C97±1.4 km/t8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
77
/100rank #2
86±0.8°C96±1.8 km/t5374% hitNOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
75
/100rank #3
83±0.9°C92±4.0 km/t5374% 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 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±1°17° to 18°±6%1% to 7% chance
Tomorrow±2°15° to 18°±17%83% to 100% chance
Sun±1°13° to 14°models agree0% to 0% chance
Mon±3°15° to 18°models agree0% to 0% chance
Tue±2°16° to 18°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 Sioux Lookout

today, local time
Sunrise
06:48
Sunset
19:14
Daylight
12h 26m

Common questions

What's the weather in Sioux Lookout today?
On this page we show what Env. Canada, European, American each forecast for Sioux Lookout 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 Sioux Lookout today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Sioux Lookout 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 Sioux Lookout?
Over the last 30 days, the European model has been the most accurate for Sioux Lookout (CheckWeather Score 91/100), ahead of the American at 77. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Sioux Lookout?
July is typically the warmest month in Sioux Lookout, with average highs around 23°C.
How cold does Sioux Lookout get?
The coldest month in Sioux Lookout is January, when overnight lows average about -14°C.
How much rain does Sioux Lookout get?
Sioux Lookout sees roughly 737 mm of precipitation a year, with August usually the wettest month.

Nearby

More CA weather