Grand Falls swings 40°C across the year, from 23°C highs in July to -17°C lows in January, and July is usually the wettest month in a year that brings about 1105 mm of precipitation.
Warmest month
July
23°C average high
Coldest month
January
-17°C average low
Wettest month
July
1105 mm a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
4 months
May, June, August and September
Residents
5,220
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The weather map: all three models at once
Env. Canada, European, American side by side around Grand Falls and nearby towns.Live rain radar →
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Grand Falls 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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Grand Falls 10-day forecast, out to 14 days
where the models agree, and where they split
Grand Falls, New Brunswick is at its warmest in Jul (average highs near 23°C) and coldest in Jan (lows around -17°C), with roughly 1105 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Grand Falls right now, and see exactly where they disagree.
average daytime high and overnight low across a typical year (1991-2020)
Jan
-7°
-17°
Feb
-5°
-16°
Mar
-1°
-9°
Apr
8°
-3°
May
16°
4°
Jun
20°
10°
Jul
23°
14°
Aug
22°
14°
Sep
18°
8°
Oct
11°
3°
Nov
4°
-3°
Dec
-4°
-12°
Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How Grand Falls' weather has changed since 1995
30 years of daily data, 1995-2024, shown as change
+0.7°C
Around Grand Falls, 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
7 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
−0.8°C
+6
+11
−3%
1996
−0.6°C
−10
+15
+1%
1997
−1.8°C
−6
+14
−3%
1998
+0.4°C
−5
−7
+1%
1999
+1.0°C
+10
+5
+4%
2000
−0.6°C
−14
−6
+1%
2001
+0.6°C
+6
−6
−3%
2002
−0.6°C
+1
+20
+1%
2003
−0.6°C
+5
+0
+1%
2004
−0.9°C
−9
+11
+4%
2005
+0.2°C
+4
−12
+4%
2006
+1.1°C
+0
−8
−3%
2007
−0.8°C
−2
+2
+4%
2008
−0.3°C
−7
−3
−3%
2009
−0.5°C
−8
+7
−3%
2010
+1.6°C
+4
−20
+1%
2011
+0.4°C
−10
−8
−3%
2012
+0.8°C
−5
−7
−3%
2013
±0.0°C
−6
−2
+1%
2014
−0.2°C
−5
−8
+1%
2015
−0.5°C
+1
+5
+4%
2016
+0.2°C
−3
−2
+1%
2017
−0.1°C
−7
−10
+1%
2018
−0.5°C
+14
+14
+4%
2019
−1.0°C
−5
+2
+4%
2020
+0.4°C
+16
+17
+1%
2021
+1.2°C
+10
−10
−3%
2022
+0.4°C
+1
−6
+1%
2023
+1.1°C
+10
−5
−9%
2024
+1.8°C
+14
−12
−3%
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Grand Falls, 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 Grand Falls?
CheckWeather Score, graded against the weather that actually happened
Provider
CheckWeather-score
Temp
Wind
Rain
Run by
European ★ Best
92
/100rank #1
90±0.6°C
99±0.7 km/h
8994% hit
ECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American
83
/100rank #2
85±0.8°C
95±2.3 km/h
7184% hit
NOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
80
/100rank #3
82±1.0°C
96±2.1 km/h
6581% 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.
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AmericanNOAA GFS
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Common questions
What's the weather in Grand Falls today?
On this page we show what Env. Canada, European, American each forecast for Grand Falls 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 Grand Falls today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Grand Falls 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 Grand Falls?
Over the last 30 days, the European model has been the most accurate for Grand Falls (CheckWeather Score 92/100), ahead of the American 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 Grand Falls?
July is typically the warmest month in Grand Falls, with average highs around 23°C.
How cold does Grand Falls get?
The coldest month in Grand Falls is January, when overnight lows average about -17°C.
How much rain does Grand Falls get?
Grand Falls sees roughly 1105 mm of precipitation a year, with July usually the wettest month.
Is Grand Falls getting warmer?
Not clearly. In NASA's reanalysis for the area around Grand Falls, the difference between 1995-2004 and 2015-2024 is 0.7°C, within the normal swing from year to year.
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