Photo: P199 · CC BY-SA 3.0Hardly any Canadian towns see more snow than Chatsworth, with about 385 cm a year
Expect July afternoons of about 24.3°C. Rain and snow together come to more here than on 80% of Canadian towns. Of all months, January brings the most precipitation and March the least. Ice scrapers and block heaters earn their keep on roughly 148 days a year at 0°C or below.
Borrowed figures: Chatsworth has no normals station, so these come from Wiarton, 44 km north-west.
A year in Chatsworth at a glance
Each month’s typical high and low, in °C.
What stands out about Chatsworth’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Chatsworth feels like
Each season’s and each month’s usual high and low, 1991–2020.
148 frost days and 102 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Some 6 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
1,074 mm of precipitation in a typical year
Some 147 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
385 cm of snow in a typical year
From October to April snow is likely; January is the peak, at about 111 cm. The snowiest of 854 towns of 2,500+ in Ontario.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Chatsworth
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. In heating terms, homes need less heating than 66% of Canadian towns.
Living with Chatsworth’s climate
What the normals mean for a garden, a day outside and the depth of winter.
A normal year gives the garden about 151 frost-free days, roughly 12 May to 10 October.
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 →About 24 days a year bring a wind chill under −20, when bare skin chills fast.
Muggy heat with a humidex over 30 arrives on about 36 days a year.
Thirty-year normals hide the storms and the extremes: the hazards page has Chatsworth’s risks.
Flood & hazards →ECCC’s normals location: Wiarton
Behind the 1991–2020 normals for Wiarton are 2 stations, which ECCC combines into one record.
| Distance from the town | 44 km north-west |
| Station altitude | 222 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −34.3°C |
| Hottest reading, 1991–2020 | 34.2°C |
| Average wind | 13.1 km/h on average, most often from the west |
| Next-nearest location | Mount Forest, 47 km |
How Chatsworth 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
Nearby places read from a different ECCC location (places on Chatsworth’s own would show the same figures). Distances here run 24–30 km: that is how far the nearest places with figures are from Chatsworth.
Chatsworth 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 | −2.2°C | −9.9°C | −6.1°C | 111 mm | 111 cm |
| February | −1.7°C | −10.2°C | −6.0°C | 77 mm | 74 cm |
| March | 2.7°C | −6.2°C | −1.8°C | 66 mm | 38 cm |
| April | 10.0°C | 0.1°C | 5.0°C | 84 mm | 18 cm |
| May | 16.9°C | 5.5°C | 11.2°C | 82 mm | 1 cm |
| June | 21.8°C | 10.5°C | 16.2°C | 79 mm | 0 cm |
| July | 24.3°C | 13.6°C | 18.9°C | 70 mm | 0 cm |
| August | 23.6°C | 13.1°C | 18.3°C | 83 mm | 0 cm |
| September | 20.1°C | 9.5°C | 14.8°C | 99 mm | 0 cm |
| October | 13.2°C | 4.6°C | 8.9°C | 110 mm | 5 cm |
| November | 6.5°C | −0.5°C | 3.0°C | 110 mm | 48 cm |
| December | 1.0°C | −5.3°C | −2.2°C | 104 mm | 92 cm |
| Year | 11.3°C | 2.1°C | 6.7°C | 1,074 mm | 385 cm |
From year to year, January moves by 3.0°C, more than any month, and August least
Bars run from each month’s record low to its record high since 1991. March spans the most, from −30.5°C (2003) to 27.2°C (2012).
Where Chatsworth’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Wiarton, 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Chatsworth’s climate
How warm does Chatsworth get in summer?
The warmest month is July, when afternoons average 24.3°C.
How cold does Chatsworth get in winter?
In February, the coldest month, the typical low is −10.2°C.
How much rain and snow does Chatsworth get?
Rain and snow, with snow counted as water, total 1,074 mm a year; January leads with 111 mm and March trails with 66 mm.
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 112 days a year.
Are these figures for Chatsworth itself?
Not exactly. Chatsworth lacks a normals station, so Wiarton supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Chatsworth →
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).