Winter nights in River-Osborne are colder than in 95% of Canadian towns
The warmest part of a July day comes in at 25.8°C on average. Its yearly rain and snow fall short of 72% of Canadian towns. Rain or snow is most frequent in July and least in February. Heating does most of its work from October to April, in months below 10°C on average.
Read at Winnipeg Richardson (Airport), 7.8 km north-west: ECCC’s normals for 1991–2020.
A year in River-Osborne at a glance
Each month’s typical high and low, in °C.
What stands out about River-Osborne’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in River-Osborne feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 193 days, 20°C on 110
Frost comes from September to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 52 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
519 mm of precipitation in a typical year
About 80 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
126 cm of snow in a typical year
Expect snow from October to May, with about 27 cm in December, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in River-Osborne
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. Homes here need more heating than 89% of Canadian towns.
Living with River-Osborne’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Seedlings can go out once the average last frost, around 23 May, has passed; autumn’s first, near 22 September, ends a season of about 122 days.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul and Aug.
Parks & trails →Count on some 86 days a year when the wind makes it feel below −20.
Humid heat, a humidex over 30, comes on about 37 days a year.
What averages leave out, the floods and ice storms, is on River-Osborne’s hazards page.
Flood & hazards →ECCC’s normals location: Winnipeg Richardson (Airport)
Winnipeg Richardson (Airport) is a composite: ECCC joins 4 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 7.8 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, 81 km |
How River-Osborne 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
The nearest places on a normals location of their own: those that share River-Osborne’s would only repeat its figures. River-Osborne has few close neighbours with figures, so the list reaches 41–49 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| River-Osborne Winnipeg Richardson (Airport) | 25.8°C | −21.2°C | 519 mm |
| Brokenhead 41 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 |
River-Osborne 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 | −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 |
Two years in three, December’s average lands within 4.1°C of normal, against the steadier July
The thirty-year records stretch furthest in March: a low of −37.4°C in 2003 and a high of 23.7°C in 2012.
Where River-Osborne’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Winnipeg Richardson (Airport), its nearest location with complete temperatures.
- 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: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about River-Osborne’s climate
How warm does River-Osborne get in summer?
Highs reach 25.8°C on an average July day; no month is warmer.
How cold does River-Osborne get in winter?
January nights average −21.2°C, the coldest of the year.
How much rain and snow does River-Osborne get?
Count on roughly 519 mm a year, heaviest in July (77 mm) and lightest in February (13 mm).
Are these figures for River-Osborne itself?
Close to it: they are ECCC’s 1991–2020 normals for Winnipeg Richardson (Airport), just outside River-Osborne’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for River-Osborne →
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).