Env. Canada, the European and the American model agree on a high near 11° in Lac-Megantic today. Tomorrow: cloudy, around 14°, with a 0% chance of rain.
Lac-Megantic swings 36°C across the year, from 22°C highs in July to -14°C lows in February, and June is usually the wettest month in a year that brings about 1225 mm of precipitation.
Warmest month
July
22°C average high
Coldest month
February
-14°C average low
Wettest month
June
1225 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
4 months
May, July, August and September
Residents
5,747
share this forecast
The weather map: all three models at once
Env. Canada, European, American side by side around Lac-Megantic and nearby towns.Live rain radar →
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Lac-Megantic 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-Megantic 10-day forecast, out to 14 days
where the models agree, and where they split
Today
Clear
11°-2°
models agree
Tomorrow
Cloudy
14°1°
models agree
Mon
Light drizzle
9°1°
models agree
Tue
Clear
3°-4°
models agree
Wed
Mostly clear
6°-5°
models agree
Thu
Light drizzle
13°-1°
models agree
Fri
Light drizzle
10°4°
models agree
Sat
Cloudy
9°0°
±5°
Sun
Cloudy
14°0°
±10°
Mon
Drizzle
14°4°
±5°
Tue
Light rain
12°3°
±5°
Wed
Drizzle
7°-1°
±7°
Thu
Snow
3°-3°
±2°
Fri
Light drizzle
3°-4°
±5°
Lac-Megantic, Quebec is at its warmest in Jul (average highs near 22°C) and coldest in Feb (lows around -14°C), with roughly 1225 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Lac-Megantic right now, and see exactly where they disagree.
average daytime high and overnight low across a typical year (1991-2020)
Jan
-6°
-13°
Feb
-4°
-14°
Mar
0°
-8°
Apr
9°
-2°
May
16°
5°
Jun
20°
11°
Jul
22°
14°
Aug
21°
13°
Sep
18°
9°
Oct
11°
3°
Nov
4°
-3°
Dec
-3°
-11°
Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How Lac-Megantic's weather has changed since 1995
30 years of daily data, 1995-2024, shown as change
+0.8°C
Around Lac-Megantic, 2015-2024 averaged 0.8°C warmer than 1995-2004. 5 of the 10 warmest years since 1995 fall in the last ten, and the warmest was 2024.
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
7 fewer nights a year
2015-2024 against 1995-2004, below 0°C. Within the normal year-to-year swing
Average wind
no clear change
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
−0.6°C
+2
−0
+1%
1996
−0.8°C
−8
+17
+1%
1997
−1.4°C
−8
+16
+1%
1998
+0.8°C
−0
−8
−2%
1999
+0.7°C
+2
+8
+1%
2000
−1.0°C
−12
+5
+1%
2001
+0.3°C
+6
−6
−6%
2002
−0.2°C
+4
+14
+1%
2003
−0.9°C
+2
+2
−2%
2004
−1.0°C
−13
+11
+1%
2005
−0.2°C
+7
−5
+1%
2006
+0.9°C
−0
−9
+1%
2007
−1.0°C
−0
+6
+1%
2008
−0.3°C
−5
−7
−2%
2009
−0.7°C
−6
+5
−2%
2010
+0.8°C
+5
−11
+1%
2011
+0.5°C
−6
−9
−2%
2012
+0.9°C
+2
−6
−2%
2013
−0.2°C
−0
+5
+1%
2014
−0.7°C
−3
−1
+1%
2015
−0.5°C
+3
−5
+1%
2016
+0.4°C
−0
+6
+1%
2017
+0.2°C
−4
−9
+1%
2018
−0.2°C
+10
+11
+1%
2019
−0.7°C
−4
+5
+5%
2020
+0.6°C
+5
+16
+1%
2021
+1.0°C
+5
−13
−2%
2022
+0.6°C
+5
−4
+1%
2023
+1.0°C
+7
−11
−6%
2024
+1.5°C
+10
−10
−2%
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Lac-Megantic, 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 Lac-Megantic?
CheckWeather Score, graded against the weather that actually happened
Provider
CheckWeather-score
Temp
Wind
Rain
Run by
European ★ Best
89
/100rank #1
89±0.6°C
97±1.5 km/h
8290% hit
ECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American
84
/100rank #2
83±1.0°C
97±1.5 km/h
7687% hit
NOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
80
/100rank #3
81±1.1°C
93±3.4 km/h
7184% hit
Environment and Climate Change CanadaDorval, Québec, Canada
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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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
±1°11° to 12°
models agree0% to 0% chance
Tomorrow
±1°14° to 14°
models agree0% to 0% chance
Mon
±2°8° to 10°
±34%15% to 49% chance
Tue
±1°3° to 4°
±10%2% to 12% chance
Wed
±1°6° to 7°
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-Megantic
today, local time
Sunrise
07:12
Sunset
17:42
Daylight
10h 30m
Common questions
What's the weather in Lac-Megantic today?
Saturday, October 24: Env. Canada, the European and the American model agree on a high near 11° in Lac-Megantic today. Tomorrow: cloudy, around 14°, with a 0% chance of rain. The forecast on this page refreshes live.
Will it rain in Lac-Megantic today or tomorrow?
Rain looks unlikely in Lac-Megantic 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 0%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for Lac-Megantic?
Over the last 30 days, the European model has been the most accurate for Lac-Megantic (CheckWeather Score 89/100), ahead of the American at 84. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Lac-Megantic?
July is typically the warmest month in Lac-Megantic, with average highs around 22°C.
How cold does Lac-Megantic get?
The coldest month in Lac-Megantic is February, when overnight lows average about -14°C.
How much rain does Lac-Megantic get?
Lac-Megantic sees roughly 1225 mm of precipitation a year, with June usually the wettest month.
Is Lac-Megantic getting warmer?
Yes. In NASA's reanalysis for the area around Lac-Megantic, 2015-2024 averaged 0.8°C warmer than 1995-2004.
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