Photo: Hayden Soloviev · CC BY 4.0Hardly any Canadian towns see more snow than Grand Falls / Grand-Sault, with about 329 cm a year
January nights here settle around −17.9°C. Seasons differ by 42°C, from the coldest nights to the warmest afternoons. Counting rain and snow together, it is wetter than 83% of Canadian towns. Heating does most of its work from October to April, in months below 10°C on average.
No ECCC station in Grand Falls / Grand-Sault has 1991–2020 normals; the page reads St. Leonard, 14 km north-west, instead.
A year in Grand Falls / Grand-Sault at a glance
Each month’s typical high and low, in °C.
What stands out about Grand Falls / Grand-Sault’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Grand Falls / Grand-Sault feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 192 frosts and 93 warm days a year
Frost comes from September to May; in January almost every night freezes. On about 33 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,128 mm a year
July brings the most rain and snow; February, the least. Some 131 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 329 cm in a normal year
The snow season runs October to May; February brings the most, about 70 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Grand Falls / Grand-Sault
88% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. By this count, homes here need more heating than 82% of Canadian towns.
Living with Grand Falls / Grand-Sault’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Wait until about 21 May to plant out; frost tends to come back around 15 September, about 116 days later.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul and Aug.
Parks & trails →A wind chill below −20 is part of about 57 days a year here.
About 24 days a year feel above 30 on the humidex.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Grand Falls / Grand-Sault’s hazards page.
Flood & hazards →ECCC’s normals location: St. Leonard
ECCC builds the St. Leonard normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 14 km north-west |
| Station altitude | 242 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −38.8°C |
| Hottest reading, 1991–2020 | 34.6°C |
| Average wind | 11.4 km/h on average, most often from the north-west |
| Next-nearest location | Aroostook, 38 km |
How Grand Falls / Grand-Sault compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in New Brunswick.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Grand Falls / Grand-Sault’s own would show the same figures). No closer place has figures: this one lies 26 km from Grand Falls / Grand-Sault.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Grand Falls / Grand-Sault St. Leonard | 24.2°C | −17.9°C | 1,128 mm |
| Gordon 26 km · Aroostook | 25.7°C 1.5°C warmer | −17.5°C about the same | 1,149 mm |
Grand Falls / Grand-Sault weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −7.1°C | −17.9°C | −12.5°C | 85 mm | 70 cm |
| February | −5.4°C | −16.8°C | −11.1°C | 73 mm | 70 cm |
| March | 0.6°C | −10.5°C | −4.9°C | 83 mm | 64 cm |
| April | 8.0°C | −2.9°C | 2.6°C | 83 mm | 26 cm |
| May | 16.6°C | 3.6°C | 10.1°C | 95 mm | 2 cm |
| June | 21.7°C | 8.6°C | 15.2°C | 108 mm | 0 cm |
| July | 24.2°C | 11.9°C | 18.1°C | 115 mm | 0 cm |
| August | 23.5°C | 10.6°C | 17.1°C | 102 mm | 0 cm |
| September | 18.8°C | 6.1°C | 12.5°C | 96 mm | 0 cm |
| October | 10.7°C | 0.6°C | 5.7°C | 103 mm | 7 cm |
| November | 3.6°C | −4.8°C | −0.6°C | 92 mm | 25 cm |
| December | −3.3°C | −12.3°C | −7.8°C | 93 mm | 66 cm |
| Year | 9.3°C | −2.0°C | 3.7°C | 1,128 mm | 329 cm |
March: −33.6°C at its coldest, 24.1°C at its warmest
The month to count on least is January: one year in three its average strays more than 2.7°C from −12.5°C. August moves least, typically by 1.0°C.
Where Grand Falls / Grand-Sault’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for St. Leonard, 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Grand Falls / Grand-Sault’s climate
How warm does Grand Falls / Grand-Sault get in summer?
In July, the warmest month, the typical high is 24.2°C.
How cold does Grand Falls / Grand-Sault get in winter?
A typical January night falls to −17.9°C, the year’s low point.
How much rain and snow does Grand Falls / Grand-Sault get?
The yearly total is about 1,128 mm. July gets 115 mm, the most of any month; February gets 73 mm, the least.
How long does snow stay on the ground?
About 151 days a year have 1 cm of snow or more on the ground.
Are these figures for Grand Falls / Grand-Sault itself?
Not exactly. Grand Falls / Grand-Sault lacks a normals station, so St. Leonard supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Grand Falls / Grand-Sault →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).