Photo: Balcer~commonswiki · CC BY 2.5Frosty mornings in Caledonia are scarcer than in 73% of Canadian towns
July afternoons average 26.6°C. Summer afternoons here are warmer than in 70% of Canadian towns. Some 36°C separates winter nights from summer afternoons. An umbrella or a shovel earns its place on about 114 days a year with 1 mm or more.
Borrowed figures: Caledonia has no normals station, so these come from Hamilton, 25 km north.
A year in Caledonia at a glance
Each month’s typical high and low, in °C.
What stands out about Caledonia’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Caledonia feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
139 frost days and 123 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Heat of 30°C or more comes on about 13 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 902 mm a year
July is the wettest month and February the driest.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 141 cm of snow a year
Snow falls from November to April, most of all in January (about 44 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Snowfall: Welland-Pelham, 49 km away (Hamilton records no complete year of it).
Heating a home in Caledonia
92% 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. Over a year, a home here needs less heating than 77% of Canadian towns.
Living with Caledonia’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
From about 1 May to 12 October the garden is usually clear of frost, some 164 days.
Plan time outside for Jun, Jul, Aug and Sep: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →Winter brings about 20 days with a wind chill below −20.
Muggy heat with a humidex over 30 arrives on about 59 days a year.
Severe weather is a separate story from the averages: see Caledonia’s hazards page.
Flood & hazards →ECCC’s normals location: Hamilton
ECCC builds the Hamilton normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 25 km north |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Welland-Pelham, 49 km |
| Coldest reading, 1991–2020 | −30.0°C |
| Hottest reading, 1991–2020 | 36.4°C |
| Average wind | 16.0 km/h on average, most often from the south-west |
| Next-nearest location | Burlington Piers, 39 km |
How Caledonia 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
The nearest places on a normals location of their own: those that share Caledonia’s would only repeat its figures. No closer places have figures: these lie 29–42 km from Caledonia.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Caledonia Hamilton | 26.6°C | −9.1°C | 902 mm |
| Smithville 29 km · Vineland | 27.1°C 0.5°C warmer | −6.8°C 2.3°C milder | 838 mm |
| Hamilton 31 km · Burlington Piers | 25.5°C 1.1°C cooler | −6.3°C 2.8°C milder | 902 mm |
| Wainfleet 37 km · Welland-Pelham | 26.8°C about the same | −8.0°C 1.1°C milder | 967 mm |
Caledonia 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 | −1.4°C | −9.1°C | −5.3°C | 73 mm | 44 cm |
| February | −0.9°C | −9.2°C | −5.0°C | 53 mm | 24 cm |
| March | 4.7°C | −4.4°C | 0.2°C | 69 mm | 28 cm |
| April | 11.8°C | 1.3°C | 6.5°C | 81 mm | 5 cm |
| May | 18.9°C | 7.3°C | 13.1°C | 81 mm | 0 cm |
| June | 24.2°C | 12.8°C | 18.5°C | 78 mm | 0 cm |
| July | 26.6°C | 15.2°C | 20.9°C | 98 mm | 0 cm |
| August | 25.6°C | 14.5°C | 20.1°C | 67 mm | 0 cm |
| September | 21.7°C | 10.5°C | 16.1°C | 74 mm | 0 cm |
| October | 14.5°C | 4.8°C | 9.7°C | 84 mm | under 1 cm |
| November | 7.7°C | −0.2°C | 3.8°C | 78 mm | 9 cm |
| December | 1.5°C | −5.4°C | −1.9°C | 67 mm | 32 cm |
| Year | 12.9°C | 3.2°C | 8.1°C | 902 mm | 141 cm |
From year to year, January moves by 3.0°C, more than any month, and June least
Bars run from each month’s record low to its record high since 1991. March spans the most, from −24.6°C (2003) to 26.8°C (2012).
Where Caledonia’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Hamilton: the nearest of its locations with every month’s temperatures.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Caledonia’s climate
How warm does Caledonia get in summer?
Peak warmth comes in July, at about 26.6°C by mid-afternoon.
How cold does Caledonia get in winter?
Midwinter means February, when a typical night reaches −9.2°C.
How much rain and snow does Caledonia get?
Count on roughly 902 mm a year, heaviest in July (98 mm) and lightest in February (53 mm).
How long does snow stay on the ground?
In a normal winter there are about 82 days with at least 1 cm of snow lying.
Are these figures for Caledonia itself?
They are the closest available: the normals for Hamilton, since Caledonia has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Caledonia →
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).