Souris has cooler summers than 87% of Canadian towns
In January the night’s low is typically −9.9°C. The gap between a January night and a July afternoon is 34°C. Precipitation is plentiful here, more than falls on 82% of Canadian towns. Ice scrapers and block heaters earn their keep on roughly 155 days a year at 0°C or below.
ECCC publishes no normals for Souris itself; the figures are those of St. Peters/Monticello, 12 km north-west.
A year in Souris at a glance
Each month’s typical high and low, in °C.
What stands out about Souris’s climate
Compared with Canadian towns, with its place among towns of 2,500+ on Prince Edward Island beside it.
What a year in Souris feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 155 frosts and 77 warm days a year
Frost comes from October to May; in January almost every night freezes.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,116 mm a year
The most falls in October, the least in February. 12th wettest of 13 towns of 2,500+ on Prince Edward Island. About 141 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
About 248 cm of snow a year
Expect snow from November to April, with about 68 cm in February, the snowiest month. 12th snowiest of 13 towns of 2,500+ on Prince Edward Island.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Snowfall: Alliston, 41 km away (St. Peters/Monticello records no complete year of it).
Heating a home in Souris
87% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C.
Living with Souris’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plant out after about 28 May; the first frost of autumn usually arrives near 19 October, leaving roughly 143 days without frost.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →Bad-weather days, from blizzards to floods, get their own page for Souris: the hazards page.
Flood & hazards →ECCC’s normals location: St. Peters/Monticello
ECCC builds the St. Peters/Monticello normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 12 km north-west |
| Station altitude | 32 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Alliston, 41 km |
| Coldest reading, 1991–2020 | −34.5°C |
| Hottest reading, 1991–2020 | 34.0°C |
| Next-nearest location | East Point, 29 km |
How Souris compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used on Prince Edward Island.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Souris’s would only repeat its figures. The nearest places to Souris with figures are 31–45 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Souris St. Peters/Monticello | 23.4°C | −9.9°C | 1,116 mm |
| Three Rivers 31 km · Alliston | 24.3°C 0.9°C warmer | −9.7°C about the same | 1,263 mm |
| East River, Part 1 44 km · Charlottetown (Airport) | 23.6°C about the same | −11.5°C 1.6°C colder | 1,136 mm |
Souris weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −2.1°C | −9.9°C | −6.0°C | 88 mm | 60 cm |
| February | −2.5°C | −10.5°C | −6.5°C | 73 mm | 68 cm |
| March | 1.2°C | −6.2°C | −2.5°C | 86 mm | 42 cm |
| April | 6.7°C | −1.1°C | 2.8°C | 81 mm | 14 cm |
| May | 13.3°C | 3.9°C | 8.6°C | 76 mm | 1 cm |
| June | 18.9°C | 9.6°C | 14.3°C | 83 mm | 0 cm |
| July | 23.4°C | 14.4°C | 18.9°C | 84 mm | 0 cm |
| August | 23.1°C | 14.4°C | 18.8°C | 90 mm | 0 cm |
| September | 19.1°C | 10.8°C | 14.9°C | 103 mm | 0 cm |
| October | 12.8°C | 5.7°C | 9.2°C | 121 mm | under 1 cm |
| November | 7.2°C | 0.7°C | 3.9°C | 114 mm | 14 cm |
| December | 1.6°C | −4.8°C | −1.6°C | 116 mm | 50 cm |
| Year | 10.2°C | 2.2°C | 6.2°C | 1,116 mm | 248 cm |
A February here can run warm or cold, its average moving by about 2.2°C; the steadiest month is August
Records from 1991 to 2020: no month spans more than March, between −26.0°C (1997) and 23.6°C (2012).
Where Souris’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for St. Peters/Monticello from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Souris’s climate
How warm does Souris get in summer?
On a normal day in July the thermometer climbs to 23.4°C, the warmest of the year.
How cold does Souris get in winter?
Winter bottoms out in February, with lows near −10.5°C.
How much rain and snow does Souris get?
1,116 mm a year counting snow as water. The wettest month is October (121 mm); the driest, February (73 mm).
Are these figures for Souris itself?
They come from St. Peters/Monticello, which ECCC uses as the nearest normals location for Souris.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Souris →
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).