Photo: Andrew Filer from Seattle (ex-Minneapolis) · CC BY-SA 2.0Nights turn raw in Altona each January, colder than in 89% of Canadian towns
The warmest part of a July day comes in at 26.0°C on average. Precipitation is light here, less than falls on 69% of Canadian towns. June is the wettest month, February the driest. Ice scrapers and block heaters earn their keep on roughly 186 days a year at 0°C or below.
Borrowed figures: Altona has no normals station, so these come from Emerson, 28 km east.
A year in Altona at a glance
Each month’s typical high and low, in °C.
What stands out about Altona’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in Altona feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 186 frosts and 117 warm days a year
Frost comes from September to May; in January almost every night freezes. Some 46 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
Rain and melted snow: about 543 mm a year
8th wettest of 189 towns of 2,500+ in Manitoba. Some 75 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
About 126 cm of snow a year
Snow falls from October to May, most of all in December (about 27 cm).
Snowfall by month
Centimetres
Snowfall: Winnipeg Richardson (Airport), 94 km away (Emerson records no complete year of it).
Heating a home in Altona
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. By this count, homes here need more heating than 82% of Canadian towns.
Living with Altona’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →A wind chill below −20 is part of about 79 days a year here.
The humidex tops 30 on about 43 days a year: muggy days to plan around.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Altona’s hazards page.
Flood & hazards →ECCC’s normals location: Emerson
ECCC builds the Emerson normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 28 km east |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Winnipeg Richardson (Airport), 94 km |
| Coldest reading, 1991–2020 | −43.2°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 16.7 km/h on average, most often from the south |
| Next-nearest location | Morden, 39 km |
How Altona 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 Altona’s would only repeat its figures. The nearest place to Altona with figures is 12 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Altona Emerson | 26.0°C | −20.4°C | 543 mm |
| Rhineland 12 km · Morden | 25.6°C about the same | −18.5°C 1.9°C milder | 528 mm |
Altona 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 | −10.6°C | −20.4°C | −15.5°C | 16 mm | 25 cm |
| February | −7.8°C | −18.4°C | −13.1°C | 16 mm | 12 cm |
| March | −0.1°C | −10.2°C | −5.2°C | 24 mm | 19 cm |
| April | 10.6°C | −1.5°C | 4.6°C | 29 mm | 14 cm |
| May | 19.2°C | 5.4°C | 12.3°C | 79 mm | 4 cm |
| June | 23.8°C | 11.5°C | 17.7°C | 90 mm | 0 cm |
| July | 26.0°C | 13.4°C | 19.7°C | 88 mm | 0 cm |
| August | 25.6°C | 11.8°C | 18.7°C | 62 mm | 0 cm |
| September | 20.5°C | 7.1°C | 13.8°C | 51 mm | 0 cm |
| October | 11.2°C | 0.2°C | 5.7°C | 41 mm | 4 cm |
| November | 1.1°C | −7.8°C | −3.4°C | 25 mm | 21 cm |
| December | −7.3°C | −16.3°C | −11.8°C | 21 mm | 27 cm |
| Year | 9.4°C | −2.1°C | 3.6°C | 543 mm | 126 cm |
In February, anything from −43.2°C to 14.1°C
Two years in three, February’s average falls within 4.1°C of its normal of −13.1°C; July keeps to within 1.2°C.
Where Altona’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Emerson, 1991–2020.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- 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 Altona’s climate
How warm does Altona get in summer?
July is the warmest month, with average highs of 26.0°C.
How cold does Altona get in winter?
Midwinter means January, when a typical night reaches −20.4°C.
How much rain and snow does Altona get?
Count on roughly 543 mm a year, heaviest in June (90 mm) and lightest in February (16 mm).
Are these figures for Altona itself?
No: Altona has no normals location, so the figures come from Emerson, the nearest with 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Altona →
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).