Photo: Millerman68 at English Wikipedia · Public domainFew Canadian towns have cooler summers than Grand Bank
Deep winter brings January lows near −6.9°C. Temperatures cover 28°C across the year, low to high. Rain and snow together come to more here than on 96% of Canadian towns. About 149 days a year bring 1 mm of precipitation or more.
ECCC publishes no normals for Grand Bank itself; the figures are those of St. Lawrence, 35 km south-east.
A year in Grand Bank at a glance
Each month’s typical high and low, in °C.
What stands out about Grand Bank’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Newfoundland and Labrador beside it.
What a year in Grand Bank feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 153 days, 20°C on 35
From October to May frost is routine, and in January it comes on almost every night.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,505 mm of precipitation in a typical year
October is the wettest month and June the driest. 10th wettest of 33 towns of 2,500+ in Newfoundland and Labrador.
Rain and snow by month
Millimetres
Snowfall: about 173 cm in a normal year
Snow falls from November to April, most of all in January (about 54 cm). 31st snowiest of 32 towns of 2,500+ in Newfoundland and Labrador.
Snowfall by month
Centimetres
ECCC’s St. Lawrence normals leave snowfall out; the figures here come from Harbour Breton, 42 km away.
Heating a home in Grand Bank
80% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months.
Living with Grand Bank’s climate
What the normals mean for a garden, a day outside and the depth of winter.
For long days outdoors, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Bitter wind chill, under −20, comes on about 9 days a year.
On some 6 days a year the humidex climbs past 30.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Grand Bank’s hazards page.
Flood & hazards →ECCC’s normals location: St. Lawrence
Behind the 1991–2020 normals for St. Lawrence are 3 stations, which ECCC combines into one record.
| Distance from the town | 35 km south-east |
| Station altitude | 49 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Harbour Breton, 42 km |
| Coldest reading, 1991–2020 | −21.5°C |
| Hottest reading, 1991–2020 | 30.1°C |
| Average wind | 22.2 km/h on average, most often from the west |
| Next-nearest location | Harbour Breton, 42 km |
How Grand Bank compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Newfoundland and Labrador.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Grand Bank’s own would show the same figures). The nearest places to Grand Bank with figures are 42–152 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Grand Bank St. Lawrence | 18.8°C | −6.9°C | 1,505 mm |
| Harbour Breton 42 km · Harbour Breton | 17.3°C 1.5°C cooler | −7.1°C about the same | 1,486 mm |
| Placentia 137 km · Dunville/Argentia | 17.4°C 1.4°C cooler | −5.6°C 1.3°C milder | 1,133 mm |
| Burgeo 151 km · Burgeo | 17.3°C 1.5°C cooler | −7.8°C 0.9°C colder | 1,316 mm |
Grand Bank 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 | 0.1°C | −6.9°C | −3.4°C | 131 mm | 54 cm |
| February | −0.4°C | −7.4°C | −3.9°C | 112 mm | 40 cm |
| March | 1.7°C | −5.2°C | −1.8°C | 117 mm | 24 cm |
| April | 6.1°C | −1.5°C | 2.3°C | 104 mm | 9 cm |
| May | 10.9°C | 2.2°C | 6.6°C | 118 mm | 0 cm |
| June | 14.9°C | 6.3°C | 10.6°C | 103 mm | 0 cm |
| July | 18.8°C | 11.1°C | 15.0°C | 109 mm | 0 cm |
| August | 20.1°C | 12.4°C | 16.2°C | 107 mm | 0 cm |
| September | 17.2°C | 8.9°C | 13.1°C | 132 mm | 0 cm |
| October | 12.1°C | 4.5°C | 8.3°C | 162 mm | under 1 cm |
| November | 7.5°C | 0.8°C | 4.1°C | 153 mm | 7 cm |
| December | 2.9°C | −3.5°C | −0.3°C | 158 mm | 39 cm |
| Year | 9.3°C | 1.8°C | 5.6°C | 1,505 mm | 173 cm |
A June here can run from −10.7°C to 27.8°C
Bars run from each month’s record low to its record high over 1991–2020; February is the month whose average wanders most from year to year (±1.8°C around −3.9°C), August the one that wanders least (±1.0°C).
Where Grand Bank’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for St. Lawrence, its nearest location with complete temperatures.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Grand Bank’s climate
How warm does Grand Bank get in summer?
Peak warmth comes in August, at about 20.1°C by mid-afternoon.
How cold does Grand Bank get in winter?
Lows sink to −7.4°C on an average February night.
How much rain and snow does Grand Bank get?
Over twelve months, rain and melted snow come to 1,505 mm; the range runs from 103 mm in June to 162 mm in October.
Are these figures for Grand Bank itself?
The figures are ECCC’s for St. Lawrence; Grand Bank has no normals station.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Grand Bank →
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).