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Forecast confidence: High · models disagree by 1°C

Lac-Brome weather

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Clear,warmer tomorrow

Env. Canada, the European and the American model agree on a high near 12° in Lac-Brome today. Tomorrow: cloudy, around 16°, with a 0% chance of rain.

12°1°
16°4°
11°3°
5°-2°
8°-2°
15°2°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agreeThursdaymodels agree
Env. CanadaGEM model
13°
Clear
Today 13°·Low 2°·Rain 0%
EuropeanECMWF
12°
Mostly clear
Today 12°·Low 1°·Rain 0%
AmericanNOAA GFS
12°
Clear
Today 12°·Low -1°·Rain 1%
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Lac-Brome weather in numbers

from 30 years of measured normals

Lac-Brome swings 36°C across the year, from 23°C highs in July to -13°C lows in January, and August is usually the wettest month in a year that brings about 1408 mm of precipitation.

Warmest month
July
23°C average high
Coldest month
January
-13°C average low
Wettest month
August
1408 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
4 months
May, June, July and September
Residents
5,629
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Clear
12° 1°
models agree
Tomorrow
Cloudy
16° 4°
models agree
Mon
Light drizzle
11° 3°
models agree
Tue
Mostly clear
5° -2°
models agree
Wed
Partly cloudy
8° -2°
models agree
Thu
Cloudy
15° 2°
models agree
Fri
Cloudy
12° 6°
±2°
Sat
Cloudy
11° 3°
±4°
Sun
Cloudy
16° 5°
±7°
Mon
Light rain
12° 6°
±13°
Tue
Rain
12° 4°
±5°
Wed
Drizzle
6° 0°
±4°
Thu
Snow
5° -1°
models agree
Fri
Light drizzle
5° -1°
±4°

Lac-Brome, Quebec is at its warmest in Jul (average highs near 23°C) and coldest in Jan (lows around -13°C), with roughly 1408 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Lac-Brome 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.

Lac-Brome climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
-6°
-13°
Feb
-3°
-13°
Mar
2°
-6°
Apr
10°
-1°
May
18°
7°
Jun
22°
13°
Jul
23°
15°
Aug
22°
15°
Sep
19°
11°
Oct
13°
5°
Nov
6°
-1°
Dec
-1°
-8°

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

How the weather around Lac-Brome has changed since 1995

Lac-Brome sits in the same roughly 50 km square of NASA's reanalysis as Cowansville. That square ran 1.0°C warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Cowansville page.

Which forecast is most accurate in Lac-Brome?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
98
/100rank #1
96±0.2°C97±1.6 km/h100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
88
/100rank #2
84±0.9°C93±3.4 km/h8994% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
American logo
American
78
/100rank #3
85±0.8°C95±2.3 km/h5877% 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 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°12° to 13°±1%0% to 1% chance
Tomorrow±2°14° to 16°models agree0% to 0% chance
Mon±2°10° to 12°±65%10% to 75% chance
Tuemodels agree5° to 5°±6%0% to 6% chance
Wed±1°8° to 9°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 Lac-Brome

today, local time
Sunrise
07:18
Sunset
17:49
Daylight
10h 31m

Common questions

What's the weather in Lac-Brome today?
Saturday, October 24: Env. Canada, the European and the American model agree on a high near 12° in Lac-Brome today. Tomorrow: cloudy, around 16°, with a 0% chance of rain. The forecast on this page refreshes live.
Will it rain in Lac-Brome today or tomorrow?
Rain looks unlikely in Lac-Brome on Sunday, October 25: no model gives more than 0% (Env. Canada 0%, European 0%, American 0%). On Saturday, October 24 the highest chance of rain from any model is 1%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for Lac-Brome?
Over the last 30 days, the European model has been the most accurate for Lac-Brome (CheckWeather Score 98/100), ahead of the Env. Canada at 88. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Lac-Brome?
July is typically the warmest month in Lac-Brome, with average highs around 23°C.
How cold does Lac-Brome get?
The coldest month in Lac-Brome is January, when overnight lows average about -13°C.
How much rain does Lac-Brome get?
Lac-Brome sees roughly 1408 mm of precipitation a year, with August usually the wettest month.

Nearby

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