Photo: P199 · CC BY-SA 3.0July in North Stormont runs hotter than in 91% of Canadian towns
January nights here settle around −11.8°C. Precipitation peaks in October and eases off in February. Frosty nights are scarcer than in 72% of Canadian towns. Heating does most of its work from October to April, in months below 10°C on average.
ECCC publishes no normals for North Stormont itself; the figures are those of Cornwall, 35 km south-east.
A year in North Stormont at a glance
Each month’s typical high and low, in °C.
What stands out about North Stormont’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in North Stormont feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 140 days, 20°C on 125
From October to April frost is routine, and in January it comes on almost every night. On about 8 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,006 mm of precipitation in a typical year
On about 134 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 198 cm of snow a year
Snow falls from November to April, most of all in January (about 51 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in North Stormont
94% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together. That means homes here need less heating than 71% of Canadian towns.
Living with North Stormont’s climate
What the normals mean for a garden, a day outside and the depth of winter.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Averages smooth over blizzards, ice storms, floods and heat waves; North Stormont’s hazards page covers the risks.
Flood & hazards →ECCC’s normals location: Cornwall
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Cornwall.
| Distance from the town | 35 km south-east |
| Station altitude | 64 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −32.0°C |
| Hottest reading, 1991–2020 | 37.5°C |
| Next-nearest location | Ottawa (Airport), 46 km |
How North Stormont compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share North Stormont’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| North Stormont Cornwall | 27.3°C | −11.8°C | 1,006 mm |
| Casselman 12 km · Cornwall | 27.3°C about the same | −11.8°C about the same | 1,006 mm |
| Limoges 16 km · Angers | 26.2°C 1.1°C cooler | −16.5°C 4.7°C colder | 930 mm |
| Embrun 17 km · Ottawa (Airport) | 27.0°C about the same | −14.3°C 2.5°C colder | 930 mm |
North Stormont 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 | −3.8°C | −11.8°C | −7.8°C | 80 mm | 51 cm |
| February | −2.1°C | −10.6°C | −6.4°C | 63 mm | 48 cm |
| March | 3.5°C | −5.3°C | −0.9°C | 64 mm | 35 cm |
| April | 11.8°C | 2.0°C | 6.9°C | 83 mm | 11 cm |
| May | 19.8°C | 8.8°C | 14.3°C | 85 mm | 0 cm |
| June | 24.6°C | 14.1°C | 19.3°C | 95 mm | 0 cm |
| July | 27.3°C | 17.0°C | 22.2°C | 97 mm | 0 cm |
| August | 26.3°C | 16.2°C | 21.2°C | 83 mm | 0 cm |
| September | 22.0°C | 11.8°C | 16.9°C | 99 mm | 0 cm |
| October | 14.1°C | 5.7°C | 9.7°C | 100 mm | 1 cm |
| November | 6.9°C | −0.3°C | 3.3°C | 82 mm | 16 cm |
| December | 0.0°C | −6.7°C | −3.3°C | 75 mm | 37 cm |
| Year | 12.5°C | 3.4°C | 8.0°C | 1,006 mm | 198 cm |
The month with the widest range: March, −27.0°C to 26.0°C
Bars run from each month’s record low to its record high over 1991–2020; January is the month whose average wanders most from year to year (±3.0°C around −7.8°C), June the one that wanders least (±1.1°C).
Where North Stormont’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Cornwall, the nearest location with a full year of temperatures.
- 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, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about North Stormont’s climate
How warm does North Stormont get in summer?
At its warmest, in July, the normal high is 27.3°C.
How cold does North Stormont get in winter?
The year’s coldest nights belong to January, at about −11.8°C.
How much rain and snow does North Stormont get?
Over twelve months, rain and melted snow come to 1,006 mm; the range runs from 63 mm in February to 100 mm in October.
Are these figures for North Stormont itself?
No, they come from Cornwall; ECCC keeps no 1991–2020 normals in North Stormont itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for North Stormont →
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).