Mount Pearl has some of the coolest summers among Canadian towns
January nights here settle around −7.2°C. The seasons are far apart: from a winter night to a summer afternoon the average spans 29°C. Counting rain and snow together, it is wetter than 94% of Canadian towns. Heating does most of its work from October to May, in months below 10°C on average.
Measured at St. John's (West), 2.2 km east: ECCC’s normals for 1991–2020.
A year in Mount Pearl at a glance
Each month’s typical high and low, in °C.
What stands out about Mount Pearl’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Newfoundland and Labrador beside it.
What a year in Mount Pearl feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
154 frost days and 58 days above 20°C a year
From October to June 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 1,381 mm a year
December brings the most rain and snow; June, the least. Some 155 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
About 363 cm of snow a year
From October to May snow is likely; January is the peak, at about 95 cm.
Snowfall by month
Centimetres
St. John's (West) publishes no full year of snowfall, so these figures come from St. John's (Airport), 12 km away.
Heating a home in Mount Pearl
82% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days.
Living with Mount Pearl’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plan time outside for Jul, Aug and Sep: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →About 9 days a year bring a wind chill under −20, when bare skin chills fast.
The air feels heavier than 30 on the humidex for about 18 days a year.
Storms, floods and heat waves sit outside these normals; Mount Pearl’s hazards page covers them.
Flood & hazards →ECCC’s normals location: St. John's (West)
Behind the 1991–2020 normals for St. John's (West) are 3 stations, which ECCC combines into one record.
| Distance from the town | 2.2 km east |
| Station altitude | 114 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | St. John's (Airport), 12 km |
| Coldest reading, 1991–2020 | −26.0°C |
| Hottest reading, 1991–2020 | 31.8°C |
| Average wind | 15.3 km/h on average, most often from the west |
| Next-nearest location | St. John's (Airport), 12 km |
How Mount Pearl 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
Places around Mount Pearl whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Mount Pearl St. John's (West) | 21.3°C | −7.2°C | 1,381 mm |
| Paradise 5.0 km · St. John's (West) | 21.3°C about the same | −7.2°C about the same | 1,381 mm |
| Portugal Cove-St. Philip's 10.0 km · St. John's (Airport) | 20.9°C about the same | −7.8°C 0.6°C colder | 1,539 mm |
Mount Pearl 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 | −7.2°C | −3.6°C | 140 mm | 95 cm |
| February | −0.3°C | −7.7°C | −4.0°C | 131 mm | 77 cm |
| March | 1.8°C | −5.2°C | −1.8°C | 129 mm | 62 cm |
| April | 6.3°C | −1.4°C | 2.5°C | 105 mm | 30 cm |
| May | 11.5°C | 2.3°C | 6.9°C | 83 mm | 5 cm |
| June | 16.4°C | 6.8°C | 11.6°C | 73 mm | 0 cm |
| July | 21.3°C | 11.7°C | 16.5°C | 86 mm | 0 cm |
| August | 21.3°C | 12.6°C | 17.0°C | 89 mm | 0 cm |
| September | 17.4°C | 9.1°C | 13.3°C | 117 mm | 0 cm |
| October | 11.8°C | 4.7°C | 8.2°C | 130 mm | 2 cm |
| November | 7.0°C | 0.5°C | 3.8°C | 138 mm | 22 cm |
| December | 2.6°C | −3.5°C | −0.4°C | 161 mm | 70 cm |
| Year | 9.8°C | 1.9°C | 5.8°C | 1,381 mm | 363 cm |
In February, anything from −26.0°C to 15.3°C
Two years in three, July’s average falls within 2.2°C of its normal of 16.5°C; September keeps to within 1.3°C.
Where Mount Pearl’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, St. John's (West): the nearest of its locations with every month’s temperatures.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- 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 (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 Mount Pearl’s climate
How warm does Mount Pearl get in summer?
Highs reach 21.3°C on an average July day; no month is warmer.
How cold does Mount Pearl get in winter?
February nights average −7.7°C, the coldest of the year.
How much rain and snow does Mount Pearl get?
About 1,381 mm a year, rain and melted snow together. December is the wettest month (161 mm) and June the driest (73 mm).
Are these figures for Mount Pearl itself?
Yes: they are ECCC’s 1991–2020 normals for St. John's (West), a location inside Mount Pearl.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Mount Pearl →
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).