Photo: Ryan Hodnett · CC BY-SA 4.0Humber Arm South is wetter than 93% of Canadian towns: 1,293 mm of rain and snow a year
Sunny July days climb to about 22.8°C. Its July afternoons stay fresher than in 93% of Canadian towns. The gap between a January night and a July afternoon is 34°C. The furnace earns its keep from October to May, the months that average under 10°C.
No ECCC station in Humber Arm South has 1991–2020 normals; the page reads Corner Brook, 19 km south-east, instead.
A year in Humber Arm South at a glance
Each month’s typical high and low, in °C.
What stands out about Humber Arm 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 Humber Arm South feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 171 frosts and 72 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
1,293 mm of precipitation in a typical year
The most falls in January, the least in April. Some 171 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 408 cm of snow a year
Snow falls from October to May, most of all in January (about 99 cm). 9th snowiest of 32 towns of 2,500+ in Newfoundland and Labrador.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Humber Arm South
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year.
Living with Humber Arm South’s climate
What the normals mean for a garden, a day outside and the depth of winter.
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 →Wind chill falls below −20 on about 24 days a year: cover skin and dress in layers.
Plan shade and water for about 13 days a year above 30 on the humidex.
Thirty years of averages say little about one bad storm; Humber Arm South’s hazards page does.
Flood & hazards →ECCC’s normals location: Corner Brook
Behind the 1991–2020 normals for Corner Brook are 2 stations, which ECCC combines into one record.
| Distance from the town | 19 km south-east |
| Station altitude | 152 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −28.2°C |
| Hottest reading, 1991–2020 | 33.3°C |
| Average wind | 10.6 km/h on average, most often from the west |
| Next-nearest location | Deer Lake, 59 km |
How Humber Arm 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
Places around Humber Arm South whose figures come from another normals location. The nearest places to Humber Arm South with figures are 56–70 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Humber Arm South Corner Brook | 22.8°C | −9.9°C | 1,293 mm |
| Deer Lake 56 km · Deer Lake | 22.9°C about the same | −12.7°C 2.8°C colder | 1,146 mm |
| Stephenville Crossing 60 km · Stephenville | 20.3°C 2.5°C cooler | −9.0°C 0.9°C milder | 1,316 mm |
Humber Arm 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 | −2.6°C | −9.9°C | −6.2°C | 140 mm | 99 cm |
| February | −2.5°C | −10.7°C | −6.6°C | 118 mm | 93 cm |
| March | 0.9°C | −8.1°C | −3.6°C | 101 mm | 59 cm |
| April | 6.2°C | −2.6°C | 1.8°C | 79 mm | 29 cm |
| May | 12.6°C | 2.1°C | 7.4°C | 85 mm | 5 cm |
| June | 18.3°C | 7.6°C | 13.0°C | 81 mm | under 1 cm |
| July | 22.8°C | 12.4°C | 17.6°C | 88 mm | 0 cm |
| August | 22.4°C | 12.5°C | 17.5°C | 108 mm | 0 cm |
| September | 17.6°C | 8.3°C | 13.0°C | 112 mm | 0 cm |
| October | 10.9°C | 3.2°C | 7.1°C | 119 mm | 6 cm |
| November | 5.1°C | −1.2°C | 2.0°C | 127 mm | 34 cm |
| December | 0.3°C | −5.7°C | −2.7°C | 136 mm | 84 cm |
| Year | 9.3°C | 0.7°C | 5.0°C | 1,293 mm | 408 cm |
February varies most from one year to the next (2.3°C), August least
March has the widest record range, −26.2°C in 1997 to 19.9°C in 1999; the tick on each bar is the month’s normal.
Where Humber Arm South’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Corner Brook (the closest location with all twelve months of temperatures).
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Humber Arm South’s climate
How warm does Humber Arm South get in summer?
At its warmest, in July, the normal high is 22.8°C.
How cold does Humber Arm South get in winter?
The year’s coldest nights belong to February, at about −10.7°C.
How much rain and snow does Humber Arm South get?
Some 1,293 mm falls in a year. Most of it comes in January (140 mm), the least in April (79 mm).
How long does snow stay on the ground?
In a normal winter there are about 133 days with at least 1 cm of snow lying.
Are these figures for Humber Arm South itself?
They are borrowed from Corner Brook, the nearest place to Humber Arm South where ECCC publishes 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Humber Arm 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).