Photo: WabbitWanderer from London, Canada · CC BY-SA 2.0Hardly any Canadian towns see harsher January nights than Chapleau
Expect July afternoons of about 23.6°C. Temperatures cover 45°C across the year, low to high. By July afternoons alone, it runs cooler than 72% of Canadian towns. Warm coats and heating bills mark the months from October to May, when means dip under 10°C.
Figures: ECCC’s 1991–2020 normals for Chapleau (4.5 km south-east).
A year in Chapleau at a glance
Each month’s typical high and low, in °C.
What stands out about Chapleau’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Chapleau feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
206 frost days and 88 days above 20°C a year
Frost comes from September to May; in January almost every night freezes. On about 55 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
Rain and melted snow: about 841 mm a year
September brings the most rain and snow; February, the least. Some 136 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 284 cm of snow a year
The snow season runs October to May; January brings the most, about 56 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Chapleau
88% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. A house here needs more heating than 97% of Canadian towns.
Living with Chapleau’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Gardens get from about 29 May to 18 September without frost, around 111 days in all.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul and Aug.
Parks & trails →Severe weather is a separate story from the averages: see Chapleau’s hazards page.
Flood & hazards →ECCC’s normals location: Chapleau
Behind the 1991–2020 normals for Chapleau are 3 stations, which ECCC combines into one record.
| Distance from the town | 4.5 km south-east |
| Station altitude | 448 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −46.1°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Next-nearest location | Wawa, 105 km |
How Chapleau compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Chapleau’s own would show the same figures). Chapleau has few close neighbours with figures, so the list reaches 104–155 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Chapleau | 23.6°C | −21.6°C | 841 mm |
| Wawa 104 km · Wawa | 20.8°C 2.8°C cooler | −19.6°C 2.0°C milder | 967 mm |
| Algoma, Unorganized, North Part 131 km · Sault Ste Marie | 24.2°C 0.6°C warmer | −14.5°C 7.1°C milder | 915 mm |
Chapleau 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 | −9.2°C | −21.6°C | −15.5°C | 51 mm | 56 cm |
| February | −6.8°C | −20.4°C | −13.6°C | 42 mm | 45 cm |
| March | −0.2°C | −13.9°C | −7.0°C | 48 mm | 37 cm |
| April | 7.2°C | −5.1°C | 1.1°C | 66 mm | 28 cm |
| May | 16.3°C | 2.7°C | 9.6°C | 72 mm | 5 cm |
| June | 21.9°C | 8.7°C | 15.3°C | 84 mm | 0 cm |
| July | 23.6°C | 11.2°C | 17.4°C | 86 mm | 0 cm |
| August | 22.2°C | 10.1°C | 16.2°C | 78 mm | 0 cm |
| September | 17.2°C | 5.9°C | 11.5°C | 101 mm | 1 cm |
| October | 8.9°C | 0.1°C | 4.6°C | 89 mm | 11 cm |
| November | 0.8°C | −7.3°C | −3.3°C | 72 mm | 46 cm |
| December | −5.8°C | −15.5°C | −10.6°C | 55 mm | 54 cm |
| Year | 8.0°C | −3.8°C | 2.1°C | 841 mm | 284 cm |
From −38.4°C to 26.2°C: March’s coldest and warmest days since 1991
The month to count on least is January: one year in three its average strays more than 3.5°C from −15.5°C. August moves least, typically by 1.2°C.
Where Chapleau’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Chapleau (the closest location with all twelve months of 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 Chapleau’s climate
How warm does Chapleau get in summer?
Expect highs near 23.6°C in July, the hottest month on average.
How cold does Chapleau get in winter?
Overnight lows average −21.6°C in January, the coldest month.
How much rain and snow does Chapleau get?
Some 841 mm falls in a year. Most of it comes in September (101 mm), the least in February (42 mm).
How long does snow stay on the ground?
The ground is white, with 1 cm or more, on some 162 days a year.
Are these figures for Chapleau itself?
They are the normals for Chapleau, measured just outside Chapleau itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Chapleau →
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).