Photo: Tango7174 · CC BY-SA 4.0Conception Bay South sits near the bottom of Canadian towns for July heat
Deep winter brings January lows near −7.2°C. By precipitation alone, it ranks wetter than 94% of Canadian towns. December is the wettest month, June the driest. Plan time outside from July to September, when highs sit at 17–21°C.
The nearest ECCC normals location to Conception Bay South is St. John's (West), 15 km east, and every figure on this page is its.
A year in Conception Bay South at a glance
Each month’s typical high and low, in °C.
What stands out about Conception Bay South’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Newfoundland and Labrador beside it.
What a year in Conception Bay South feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 154 frosts and 58 warm days 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
About 1,381 mm of rain and snow a year
About 155 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
363 cm of snow in a typical year
The snow season runs October to May; January brings the most, 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), 22 km away.
Heating a home in Conception Bay South
82% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
The total grows by a degree for every degree a day’s mean sits under 18°C.
Living with Conception Bay South’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The outdoor season by the averages is Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 9 days a year when the wind makes it feel below −20.
Count on some 18 humid days a year with the humidex past 30.
What averages leave out, the floods and ice storms, is on Conception Bay South’s hazards page.
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 | 15 km east |
| Station altitude | 114 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | St. John's (Airport), 22 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), 22 km |
How Conception Bay South 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 Newfoundland and Labrador.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Conception Bay South’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Conception Bay South St. John's (West) | 21.3°C | −7.2°C | 1,381 mm |
| Paradise 9.5 km · St. John's (West) | 21.3°C about the same | −7.2°C about the same | 1,381 mm |
| Harbour Main-Chapel's Cove-Lakeview 15 km · Whitbourne | 21.1°C about the same | −8.7°C 1.5°C colder | 1,748 mm |
| Portugal Cove-St. Philip's 15 km · St. John's (Airport) | 20.9°C about the same | −7.8°C 0.6°C colder | 1,539 mm |
Conception Bay South 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 |
February has run from −26.0°C to 15.3°C in thirty years
From one year to the next, July’s average typically shifts by 2.2°C around its normal of 16.5°C, the widest of any month, while September’s shifts by 1.3°C.
Where Conception Bay South’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: 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 (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 Conception Bay South’s climate
How warm does Conception Bay South get in summer?
The year’s warmest days come in July, with highs averaging 21.3°C.
How cold does Conception Bay South get in winter?
Winter bottoms out in February, with lows near −7.7°C.
How much rain and snow does Conception Bay South get?
The year adds up to 1,381 mm. December is the peak month (161 mm) and June the low one (73 mm).
Are these figures for Conception Bay South itself?
They describe St. John's (West), the nearest normals location, rather than Conception Bay South itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Conception Bay South →
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).