Env. Canada, the European and the American model agree on a high near 17° in Sioux Lookout today. Tomorrow: cloudy, around 6°, with a 6% chance of rain.
Sioux Lookout swings 41°C across the year, from 23°C highs in July to -18°C lows in January, and June is usually the wettest month in a year that brings about 693 mm of precipitation.
Warmest month
July
23°C average high
Coldest month
January
-18°C average low
Wettest month
June
693 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
3 months
July, August 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
Drizzle
17°6°
models agree
Tomorrow
Cloudy
6°2°
±3°
Mon
Light drizzle
4°-1°
models agree
Tue
Drizzle
6°-1°
models agree
Wed
Light rain
9°5°
±3°
Thu
Light drizzle
8°4°
models agree
Fri
Cloudy
9°4°
±5°
Sat
Light drizzle
12°6°
±2°
Sun
Light rain
12°4°
models agree
Mon
Heavy snow
4°1°
models agree
Tue
Snow
3°0°
models agree
Wed
Cloudy
6°-1°
models agree
Thu
Partly cloudy
4°-1°
models agree
Sioux Lookout, Ontario is at its warmest in Jul (average highs near 23°C) and coldest in Jan (lows around -18°C), with roughly 693 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.
average daytime high and overnight low across a typical year (1991-2020)
Jan
-13°
-18°
Feb
-9°
-17°
Mar
-3°
-10°
Apr
6°
-3°
May
15°
3°
Jun
21°
12°
Jul
23°
15°
Aug
21°
14°
Sep
17°
9°
Oct
7°
2°
Nov
-2°
-6°
Dec
-9°
-15°
Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How Sioux Lookout's weather has changed since 1995
30 years of daily data, 1995-2024, shown as change
+0.7°C
Around Sioux Lookout, the difference between 1995-2004 and 2015-2024 is +0.7°C, within the normal swing from year to year.
1995each stripe is one year2024
cooler than averagearound averagewarmer than average
Days above 25°C
6 more days a year
2015-2024 against 1995-2004. Within the normal year-to-year swing
Frost nights
9 fewer nights a year
2015-2024 against 1995-2004, below 0°C. Within the normal year-to-year swing
Average wind
+2%
2015-2024 against 1995-2004. Within the normal year-to-year swing
Bars: each year against the area's 30-year average. Dashed lines: the average of the first and the last ten years.
See the numbers year by year
Year
Temp vs average
Days >25°C vs avg
Frost nights vs avg
Wind vs avg
1995
−0.7°C
+18
+6
−2%
1996
−2.2°C
+10
+15
−2%
1997
−0.8°C
−2
+20
−2%
1998
+1.9°C
+12
−11
−2%
1999
+1.2°C
−1
−1
+2%
2000
−0.5°C
−24
−6
−2%
2001
+0.8°C
−3
−5
−2%
2002
−0.9°C
−2
+30
−2%
2003
±0.0°C
+11
+4
−2%
2004
−1.2°C
−21
+6
+2%
2005
+0.1°C
−5
−6
−2%
2006
+1.1°C
+2
−5
−6%
2007
−0.1°C
+1
−9
+2%
2008
−1.7°C
−22
+5
+2%
2009
−1.1°C
−22
+10
−2%
2010
+1.1°C
−6
−29
−2%
2011
+0.3°C
+5
−4
−2%
2012
+1.5°C
+14
−5
−2%
2013
−1.9°C
−3
+12
−2%
2014
−2.3°C
−19
+8
+2%
2015
+0.3°C
−5
−12
+2%
2016
+0.7°C
−11
−6
−2%
2017
−0.2°C
−18
−5
+2%
2018
−0.4°C
+19
+9
−2%
2019
−1.0°C
+6
−0
+2%
2020
+0.5°C
+13
+13
+2%
2021
+1.8°C
+26
−5
+2%
2022
−0.9°C
−6
+1
+6%
2023
+1.5°C
+22
−6
−2%
2024
+2.1°C
+14
−16
+2%
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Sioux Lookout, not a weather station, and a square that takes in sea or a large lake runs milder than the city itself. That is why this section shows change against the square's own 30-year average rather than counts you could compare with a local station. Rain and snow are left out because their long-term record in this dataset is not consistent over time. "Within the normal year-to-year swing" means the change is smaller than the usual differences between single years.
Which forecast is most accurate in Sioux Lookout?
CheckWeather Score, graded against the weather that actually happened
Provider
CheckWeather-score
Temp
Wind
Rain
Run by
European ★ Best
96
/100rank #1
96±0.2°C
97±1.6 km/h
9597% hit
ECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
83
/100rank #2
90±0.6°C
90±5.2 km/h
7184% hit
Environment and Climate Change CanadaDorval, Québec, Canada
American
82
/100rank #3
87±0.7°C
96±2.1 km/h
6581% hit
NOAA / NCEP (United States)College Park, Maryland, USA
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
Day
Temperature
Rain
Today
±2°16° to 18°
±55%43% to 98% chance
Tomorrow
±3°4° to 8°
±6%0% to 6% chance
Mon
±2°3° to 5°
±5%0% to 5% chance
Tue
±2°5° to 7°
±40%29% to 69% chance
Wed
±3°8° to 11°
±15%50% to 65% 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
07:44
Sunset
17:58
Daylight
10h 14m
Common questions
What's the weather in Sioux Lookout today?
Saturday, October 24: Env. Canada, the European and the American model agree on a high near 17° in Sioux Lookout today. Tomorrow: cloudy, around 6°, with a 6% chance of rain. The forecast on this page refreshes live.
Will it rain in Sioux Lookout today or tomorrow?
Rain looks unlikely in Sioux Lookout on Sunday, October 25: no model gives more than 6% (Env. Canada 0%, European 6%, American 1%). On Saturday, October 24 the highest chance of rain from any model is 98%. The hourly strip and the model-by-model rain panel above update live.
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 96/100), ahead of the Env. Canada at 83. 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 -18°C.
How much rain does Sioux Lookout get?
Sioux Lookout sees roughly 693 mm of precipitation a year, with June usually the wettest month.
Is Sioux Lookout getting warmer?
Not clearly. In NASA's reanalysis for the area around Sioux Lookout, the difference between 1995-2004 and 2015-2024 is 0.7°C, within the normal swing from year to year.
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