Photo: P199 · Public domainMarkstay-Warren has colder winter nights than 82% of Canadian towns
Midsummer highs settle at about 25.0°C. Of all months, September brings the most precipitation and February the least. Summers stay cool: July afternoons here are cooler than in 62% of Canadian towns. An umbrella or a shovel earns its place on about 122 days a year with 1 mm or more.
ECCC publishes no normals for Markstay-Warren itself; the figures are those of Sudbury, 29 km north-west.
A year in Markstay-Warren at a glance
Each month’s typical high and low, in °C.
What stands out about Markstay-Warren’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Markstay-Warren feels like
Each season’s and each month’s usual high and low, 1991–2020.
177 frost days and 99 days above 20°C a year
The frost season runs September to May, and January freezes nearly every night. Some 28 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 912 mm of rain and snow a year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 263 cm in a normal year
Expect snow from October to May, with about 64 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Markstay-Warren
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. By this count, homes here need more heating than 73% of Canadian towns.
Living with Markstay-Warren’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
On average the last spring frost comes around 18 May and the first autumn frost around 1 October: about 136 frost-free days between.
The outdoor season by the averages is Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 66 days a year when the wind makes it feel below −20.
Muggy heat with a humidex over 30 arrives on about 25 days a year.
A typical year is calm by definition; Markstay-Warren’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Sudbury
Behind the 1991–2020 normals for Sudbury are 2 stations, which ECCC combines into one record.
| Distance from the town | 29 km north-west |
| Station altitude | 348 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −38.0°C |
| Hottest reading, 1991–2020 | 35.7°C |
| Average wind | 14.2 km/h on average, most often from the south-west |
| Next-nearest location | North Bay, 83 km |
How Markstay-Warren compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Markstay-Warren’s would only repeat its figures. Markstay-Warren has no close neighbour with figures; the nearest is 40 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Markstay-Warren Sudbury | 25.0°C | −17.5°C | 912 mm |
| Sturgeon Falls 40 km · North Bay | 24.3°C 0.7°C cooler | −17.3°C about the same | 1,020 mm |
Markstay-Warren weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −7.8°C | −17.5°C | −12.7°C | 67 mm | 64 cm |
| February | −5.9°C | −16.3°C | −11.1°C | 51 mm | 52 cm |
| March | 0.5°C | −10.2°C | −4.9°C | 58 mm | 33 cm |
| April | 8.6°C | −2.0°C | 3.3°C | 68 mm | 16 cm |
| May | 17.4°C | 5.3°C | 11.4°C | 79 mm | 2 cm |
| June | 22.6°C | 11.0°C | 16.8°C | 77 mm | 0 cm |
| July | 25.0°C | 13.4°C | 19.1°C | 84 mm | 0 cm |
| August | 23.5°C | 12.5°C | 18.0°C | 90 mm | 0 cm |
| September | 18.6°C | 8.1°C | 13.3°C | 103 mm | under 1 cm |
| October | 10.6°C | 1.9°C | 6.2°C | 94 mm | 7 cm |
| November | 2.9°C | −4.4°C | −0.8°C | 75 mm | 30 cm |
| December | −3.9°C | −11.7°C | −7.8°C | 66 mm | 60 cm |
| Year | 9.3°C | −0.8°C | 4.3°C | 912 mm | 263 cm |
The most changeable month: January, give or take 3.5°C; the steadiest, June
Records from 1991 to 2020: no month spans more than March, between −31.7°C (2003) and 25.9°C (2012).
Where Markstay-Warren’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Sudbury: 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: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Markstay-Warren’s climate
How warm does Markstay-Warren get in summer?
Of all twelve months, July has the warmest afternoons, about 25.0°C.
How cold does Markstay-Warren get in winter?
January nights average −17.5°C, the coldest of the year.
How much rain and snow does Markstay-Warren get?
Over twelve months, rain and melted snow come to 912 mm; the range runs from 51 mm in February to 103 mm in September.
How long does snow stay on the ground?
Count on about 131 days of snow cover a year, 1 cm or deeper.
Are these figures for Markstay-Warren itself?
No. ECCC measures normals at Sudbury, not in Markstay-Warren; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Markstay-Warren →
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).