Photo: Jorshua59 at English Wikipedia · CC BY-SA 3.0Hardly any Canadian towns see fresher July days than Marystown
January nights here settle around −6.9°C. Precipitation is plentiful here, more than falls on 96% of Canadian towns. October is the wettest month, June the driest. Frost comes on about 153 days a year, so leave time to clear the car.
No ECCC station in Marystown has 1991–2020 normals; the page reads St. Lawrence, 31 km south-west, instead.
A year in Marystown at a glance
Each month’s typical high and low, in °C.
What stands out about Marystown’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Newfoundland and Labrador beside it.
What a year in Marystown feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 153 frosts and 35 warm days a year
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
Rain and melted snow: about 1,505 mm a year
10th wettest of 32 towns of 2,500+ in Newfoundland and Labrador. On about 149 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Snowfall: about 173 cm in a normal year
The snow season runs November to April; January brings the most, about 54 cm. 31st snowiest of 31 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, 60 km away.
Heating a home in Marystown
80% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year.
Living with Marystown’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jul, Aug and Sep.
Parks & trails →About 9 days a year bring a wind chill under −20, when bare skin chills fast.
About 6 days a year turn sultry, with the humidex past 30.
Thirty-year normals hide the storms and the extremes: the hazards page has Marystown’s risks.
Flood & hazards →ECCC’s normals location: St. Lawrence
ECCC builds the St. Lawrence normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 31 km south-west |
| Station altitude | 49 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Harbour Breton, 60 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, 60 km |
How Marystown compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Newfoundland and Labrador.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Marystown’s own would show the same figures). The nearest places to Marystown with figures are 59–111 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Marystown St. Lawrence | 18.8°C | −6.9°C | 1,505 mm |
| Harbour Breton 59 km · Harbour Breton | 17.3°C 1.5°C cooler | −7.1°C about the same | 1,486 mm |
| Placentia 93 km · Dunville/Argentia | 17.4°C 1.4°C cooler | −5.6°C 1.3°C milder | 1,133 mm |
Marystown weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and 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 |
February strays furthest from its normal year to year, by 1.8°C; August the least
The thirty-year records stretch furthest in June: a low of −10.7°C in 2018 and a high of 27.8°C in 2003.
Where Marystown’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, St. Lawrence, 1991–2020.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Marystown’s climate
How warm does Marystown get in summer?
The year’s warmest days come in August, with highs averaging 20.1°C.
How cold does Marystown get in winter?
Winter bottoms out in February, with lows near −7.4°C.
How much rain and snow does Marystown get?
Around 1,505 mm a year in all, from 162 mm in October down to 103 mm in June.
Are these figures for Marystown itself?
No: Marystown has no normals location, so the figures come from St. Lawrence, the nearest with 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Marystown →
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).