Photo: Vince pahkala · CC BY-SA 3.0Midwinter lows in St. Laurent sink below those of 86% of Canadian towns
Midsummer highs settle at about 25.4°C. June is the wettest month here, with about 4.7 times the rain and snow of February. Precipitation is light here, less than falls on 76% of Canadian towns. Plan for rain or snow on about 82 days a year, the days with 1 mm or more.
St. Laurent has no ECCC normals station nearby: the figures come from Portage Southport, 59 km south-west, so read them as the wider area’s climate.
A year in St. Laurent at a glance
Each month’s typical high and low, in °C.
What stands out about St. Laurent’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in St. Laurent feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 184 frosts and 105 warm days a year
Frost comes from October to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 42 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 493 mm a year
Rain and snow by month
Millimetres
126 cm of snow in a typical year
The snow season runs October to May; December brings the most, about 27 cm.
Snowfall by month
Centimetres
Snowfall: Winnipeg Richardson (Airport), 72 km away (Portage Southport records no complete year of it).
Heating a home in St. Laurent
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year. In heating terms, homes need more heating than 83% of Canadian towns.
Living with St. Laurent’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Plant out after about 19 May; the first frost of autumn usually arrives near 28 September, leaving roughly 130 days without frost.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul and Aug.
Parks & trails →On some 77 days a year the wind chill drops past −20; mitts and a scarf earn their place.
Roughly 38 days a year feel hotter than 30 once humidity is counted.
Severe weather is a separate story from the averages: see St. Laurent’s hazards page.
Flood & hazards →ECCC’s normals location: Portage Southport
ECCC builds the Portage Southport normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 59 km south-west |
| Station altitude | 270 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Winnipeg Richardson (Airport), 72 km |
| Coldest reading, 1991–2020 | −39.8°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 13.7 km/h on average, most often from the north-west |
| Next-nearest location | Gimli, 70 km |
How St. Laurent compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Manitoba.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on St. Laurent’s own would show the same figures). No closer places have figures: these lie 29–48 km from St. Laurent.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| St. Laurent Portage Southport | 25.4°C | −19.1°C | 493 mm |
| Woodlands 29 km · Winnipeg Richardson (Airport) | 25.8°C about the same | −21.2°C 2.1°C colder | 519 mm |
| Coldwell 35 km · Hodgson | 25.2°C about the same | −24.3°C 5.2°C colder | 602 mm |
| Armstrong 46 km · Gimli | 25.3°C about the same | −22.7°C 3.6°C colder | 517 mm |
St. Laurent weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −10.0°C | −19.1°C | −14.6°C | 18 mm | 25 cm |
| February | −7.7°C | −17.4°C | −12.6°C | 17 mm | 12 cm |
| March | −0.6°C | −10.2°C | −5.5°C | 30 mm | 19 cm |
| April | 9.7°C | −1.9°C | 4.0°C | 37 mm | 14 cm |
| May | 17.4°C | 5.1°C | 11.3°C | 65 mm | 4 cm |
| June | 22.5°C | 11.4°C | 16.9°C | 80 mm | 0 cm |
| July | 25.4°C | 14.2°C | 19.8°C | 62 mm | 0 cm |
| August | 24.8°C | 12.6°C | 18.7°C | 51 mm | 0 cm |
| September | 19.3°C | 7.7°C | 13.5°C | 48 mm | 0 cm |
| October | 10.6°C | 0.7°C | 5.7°C | 41 mm | 4 cm |
| November | 0.3°C | −8.1°C | −3.9°C | 25 mm | 21 cm |
| December | −7.3°C | −15.7°C | −11.5°C | 20 mm | 27 cm |
| Year | 8.7°C | −1.7°C | 3.5°C | 493 mm | 126 cm |
December varies most from one year to the next (4.1°C), July least
Records from 1991 to 2020: no month spans more than March, between −34.0°C (2003) and 24.6°C (2012).
Where St. Laurent’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Portage Southport from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 St. Laurent’s climate
How warm does St. Laurent get in summer?
Summer peaks in July: a typical afternoon reaches 25.4°C.
How cold does St. Laurent get in winter?
The coldest nights come in January, averaging −19.1°C.
How much rain and snow does St. Laurent get?
Rain and snow, with snow counted as water, total 493 mm a year; June leads with 80 mm and February trails with 17 mm.
Are these figures for St. Laurent itself?
They are the figures for Portage Southport, which read better as the region’s climate than St. Laurent’s own.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for St. Laurent →
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).