January in McMillan bites harder than in 95% of Canadian towns
Sunny July days climb to about 25.8°C. Rain and snow together come to less here than on 72% of Canadian towns. Precipitation follows the seasons: July brings about 5.8 times as much as February. Heating does most of its work from October to April, in months below 10°C on average.
1991–2020 normals from ECCC’s Winnipeg Richardson (Airport) location, 7.7 km north-west.
A year in McMillan at a glance
Each month’s typical high and low, in °C.
What stands out about McMillan’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in McMillan feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 193 frosts and 110 warm days a year
Frost comes from September to May; in January almost every night freezes. Some 52 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 519 mm of rain and snow a year
On about 80 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
126 cm of snow in a typical year
From October to May snow is likely; December is the peak, at about 27 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in McMillan
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. That means homes here need more heating than 89% of Canadian towns.
Living with McMillan’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The frost-free stretch runs from about 23 May to about 22 September, some 122 days in a normal year.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Plan for about 86 days a year with a wind chill below −20.
Summer brings about 37 days when the humidex passes 30.
What averages leave out, the floods and ice storms, is on McMillan’s hazards page.
Flood & hazards →ECCC’s normals location: Winnipeg Richardson (Airport)
ECCC builds the Winnipeg Richardson (Airport) normals from 4 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 7.7 km north-west |
| Station altitude | 239 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.8°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 17.5 km/h on average, most often from the south |
| Next-nearest location | Portage Southport, 80 km |
How McMillan 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 McMillan’s would only repeat its figures. McMillan has few close neighbours with figures, so the list reaches 43–50 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| McMillan Winnipeg Richardson (Airport) | 25.8°C | −21.2°C | 519 mm |
| Brokenhead 43 km · Pinawa | 25.2°C 0.6°C cooler | −21.7°C 0.5°C colder | 571 mm |
| Cartier 45 km · Portage Southport | 25.4°C about the same | −19.1°C 2.1°C milder | 493 mm |
| St-Pierre-Jolys 49 km · Emerson | 26.0°C about the same | −20.4°C 0.8°C milder | 543 mm |
McMillan 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 | −11.4°C | −21.2°C | −16.3°C | 18 mm | 25 cm |
| February | −8.8°C | −19.3°C | −14.1°C | 13 mm | 12 cm |
| March | −0.9°C | −11.2°C | −6.1°C | 26 mm | 19 cm |
| April | 10.0°C | −2.5°C | 3.8°C | 33 mm | 14 cm |
| May | 18.1°C | 4.2°C | 11.1°C | 70 mm | 4 cm |
| June | 23.3°C | 10.9°C | 17.1°C | 74 mm | 0 cm |
| July | 25.8°C | 13.2°C | 19.5°C | 77 mm | 0 cm |
| August | 25.4°C | 11.9°C | 18.7°C | 74 mm | 0 cm |
| September | 19.6°C | 6.9°C | 13.3°C | 53 mm | 0 cm |
| October | 10.4°C | −0.2°C | 5.1°C | 38 mm | 4 cm |
| November | 0.1°C | −8.8°C | −4.4°C | 25 mm | 21 cm |
| December | −8.2°C | −17.3°C | −12.7°C | 19 mm | 27 cm |
| Year | 8.6°C | −2.8°C | 2.9°C | 519 mm | 126 cm |
March: −37.4°C at its coldest, 23.7°C at its warmest
The month to count on least is December: one year in three its average strays more than 4.1°C from −12.7°C. July moves least, typically by 1.4°C.
Where McMillan’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Winnipeg Richardson (Airport): the nearest of its locations with every month’s 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 McMillan’s climate
How warm does McMillan get in summer?
On a normal day in July the thermometer climbs to 25.8°C, the warmest of the year.
How cold does McMillan get in winter?
Of all twelve months, January has the coldest nights, about −21.2°C.
How much rain and snow does McMillan get?
Rain and snow add up to about 519 mm of water a year; July brings the most (77 mm), February the least (13 mm).
Are these figures for McMillan itself?
They are the normals for Winnipeg Richardson (Airport), measured just outside McMillan itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for McMillan →
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).