Photo: Krazytea · CC BY-SA 4.0Grey has colder winter nights than 86% of Canadian towns
Sunny July days climb to about 25.4°C. Precipitation is light here, less than falls on 76% of Canadian towns. Seasons differ by 45°C, from the coldest nights to the warmest afternoons. Ice scrapers and block heaters earn their keep on roughly 184 days a year at 0°C or below.
These are not Grey’s own readings: ECCC keeps no normals there, so the page uses Portage Southport, 26 km north.
A year in Grey at a glance
Each month’s typical high and low, in °C.
What stands out about Grey’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in Grey feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
184 frost days and 105 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. On about 42 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
493 mm of precipitation in a typical year
The most falls in June, the least in February. About 82 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
137 cm of snow in a typical year
From October to May snow is likely; December is the peak, at about 34 cm. 9th snowiest of 187 towns of 2,500+ in Manitoba.
Snowfall by month
Centimetres
Snowfall: Cypress River, 64 km away (Portage Southport records no complete year of it).
Heating a home in Grey
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C. By this count, homes here need more heating than 83% of Canadian towns.
Living with Grey’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The growing season between frosts lasts about 130 days, roughly 19 May to 28 September.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul and Aug.
Parks & trails →Winter brings about 77 days with a wind chill below −20.
About 38 days a year turn sultry, with the humidex past 30.
Averages smooth over blizzards, ice storms, floods and heat waves; Grey’s hazards page covers the risks.
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 | 26 km north |
| Station altitude | 270 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Cypress River, 64 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 | Morden, 55 km |
How Grey 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 Manitoba.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Grey’s would only repeat its figures. The nearest places to Grey with figures are 16–38 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Grey Portage Southport | 25.4°C | −19.1°C | 493 mm |
| Dufferin 16 km · Morden | 25.6°C about the same | −18.5°C 0.6°C milder | 528 mm |
| Norfolk-Treherne 35 km · Cypress River | 25.9°C 0.5°C warmer | −20.1°C 1.0°C colder | 517 mm |
Grey weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −10.0°C | −19.1°C | −14.6°C | 18 mm | 23 cm |
| February | −7.7°C | −17.4°C | −12.6°C | 17 mm | 18 cm |
| March | −0.6°C | −10.2°C | −5.5°C | 30 mm | 16 cm |
| April | 9.7°C | −1.9°C | 4.0°C | 37 mm | 11 cm |
| May | 17.4°C | 5.1°C | 11.3°C | 65 mm | 6 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 | under 1 cm |
| October | 10.6°C | 0.7°C | 5.7°C | 41 mm | 8 cm |
| November | 0.3°C | −8.1°C | −3.9°C | 25 mm | 22 cm |
| December | −7.3°C | −15.7°C | −11.5°C | 20 mm | 34 cm |
| Year | 8.7°C | −1.7°C | 3.5°C | 493 mm | 137 cm |
March has run from −34.0°C to 24.6°C in thirty years
From one year to the next, December’s average typically shifts by 4.1°C around its normal of −11.5°C, the widest of any month, while July’s shifts by 1.3°C.
Where Grey’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Portage Southport, the nearest location with a full year of temperatures.
- 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: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Grey’s climate
How warm does Grey get in summer?
Peak warmth comes in July, at about 25.4°C by mid-afternoon.
How cold does Grey get in winter?
Midwinter means January, when a typical night reaches −19.1°C.
How much rain and snow does Grey get?
June is the wettest month at 80 mm and February the driest at 17 mm, for 493 mm over the year.
Are these figures for Grey itself?
They describe Portage Southport, the nearest normals location, rather than Grey itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Grey →
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).