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CheckWeather CA›South Terwillegar
Forecast confidence: High · models disagree by 1°C

South Terwillegar weather

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Cloudy,much the same tomorrow

Env. Canada, the European and the American model agree on a high near 3° in South Terwillegar today. Tomorrow: cloudy, around 2°, with a 1% chance of rain.

3°-4°
2°-6°
6°-4°
5°-4°
0°-3°
-1°-5°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaysplit ±3°Thursdaysplit ±3°
Env. CanadaGEM model
2°
Cloudy
Today 2°·Low -8°·Rain 0%
EuropeanECMWF
3°
Partly cloudy
Today 3°·Low -2°·Rain 0%
AmericanNOAA GFS
4°
Cloudy
Today 4°·Low -2°·Rain 0%
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South Terwillegar weather in numbers

from 30 years of measured normals

South Terwillegar swings 38°C across the year, from 22°C highs in July to -16°C lows in January, and July is usually the wettest month in a year that brings about 458 mm of precipitation.

Warmest month
July
22°C average high
Coldest month
January
-16°C average low
Wettest month
July
458 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
4 months
May, June, August and September
Residents
7,532
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Cloudy
3° -4°
models agree
Tomorrow
Cloudy
2° -6°
models agree
Mon
Cloudy
6° -4°
models agree
Tue
Partly cloudy
5° -4°
models agree
Wed
Light snow
0° -3°
±3°
Thu
Light snow
-1° -5°
±3°
Fri
Partly cloudy
0° -6°
±3°
Sat
Cloudy
1° -6°
±6°
Sun
Cloudy
6° -5°
±2°
Mon
Cloudy
8° 0°
models agree
Tue
Cloudy
8° 1°
±3°
Wed
Cloudy
7° 2°
±5°
Thu
Cloudy
8° 1°
±8°

South Terwillegar, Alberta is at its warmest in Jul (average highs near 22°C) and coldest in Jan (lows around -16°C), with roughly 458 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for South Terwillegar 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.

South Terwillegar climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
-8°
-16°
Feb
-5°
-14°
Mar
-1°
-11°
Apr
10°
-2°
May
17°
5°
Jun
20°
9°
Jul
22°
12°
Aug
22°
11°
Sep
16°
5°
Oct
9°
0°
Nov
0°
-7°
Dec
-5°
-13°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around South Terwillegar has changed since 1995

South Terwillegar sits in the same roughly 50 km square of NASA's reanalysis as Edmonton. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Edmonton page.

Which forecast is most accurate in South Terwillegar?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
98
/100rank #1
97±0.2°C98±1.0 km/h100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
86
/100rank #2
87±0.7°C91±4.4 km/h8290% hitNOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
83
/100rank #3
87±0.7°C95±2.3 km/h7184% 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 1320 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°2° to 4°models agree0% to 0% chance
Tomorrow±2°1° to 3°±1%0% to 1% chance
Mon±2°4° to 6°models agree0% to 0% chance
Tue±2°4° to 6°±17%7% to 24% chance
Wed±3°-2° to 1°±22%21% to 43% 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 South Terwillegar

today, local time
Sunrise
08:18
Sunset
18:17
Daylight
9h 59m

Common questions

What's the weather in South Terwillegar today?
Saturday, October 24: Env. Canada, the European and the American model agree on a high near 3° in South Terwillegar today. Tomorrow: cloudy, around 2°, with a 1% chance of rain. The forecast on this page refreshes live.
Will it rain in South Terwillegar today or tomorrow?
Rain looks unlikely in South Terwillegar on Sunday, October 25: no model gives more than 1% (Env. Canada 0%, European 0%, American 1%). On Saturday, October 24 the highest chance of rain from any model is 0%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for South Terwillegar?
Over the last 30 days, the European model has been the most accurate for South Terwillegar (CheckWeather Score 98/100), ahead of the American at 86. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in South Terwillegar?
July is typically the warmest month in South Terwillegar, with average highs around 22°C.
How cold does South Terwillegar get?
The coldest month in South Terwillegar is January, when overnight lows average about -16°C.
How much rain does South Terwillegar get?
South Terwillegar sees roughly 458 mm of precipitation a year, with July usually the wettest month.

Nearby

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