Photo: Fishonleash · CC BY 4.0Summer afternoons in King are warmer than in 91% of Canadian towns
The coldest hours of a January night bottom out at −10.1°C on average. A year here swings 37°C from midwinter lows to midsummer highs. Only about 145 nights a year bring a frost, fewer than in 70% of Canadian towns. Have the furnace checked before October to April, the months that average under 10°C.
These are not King’s own readings: ECCC keeps no normals there, so the page uses Toronto Buttonville (Airport), 19 km south-east.
A year in King at a glance
Each month’s typical high and low, in °C.
What stands out about King’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in King feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 145 frosts and 126 warm days 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
862 mm of precipitation in a typical year
June is the wettest month and February the driest. About 113 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 146 cm of snow a year
From November to April snow is likely; January is the peak, at about 40 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in King
93% 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. Homes here need less heating than 74% of Canadian towns.
Living with King’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
A normal year gives the garden about 161 frost-free days, roughly 3 May to 13 October.
For long days outdoors, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 22 days a year when the wind makes it feel below −20.
Summer brings about 55 days when the humidex passes 30.
Ice storms, floods and heat waves are risks, not averages: they are on King’s hazards page.
Flood & hazards →ECCC’s normals location: Toronto Buttonville (Airport)
ECCC builds the Toronto Buttonville (Airport) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 19 km south-east |
| Station altitude | 198 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −35.2°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 12.2 km/h on average, most often from the north |
| Next-nearest location | Toronto Pearson (Airport), 30 km |
How King 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
Places around King whose figures come from another normals location. The nearest places to King with figures are 18–29 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| King Toronto Buttonville (Airport) | 27.3°C | −10.1°C | 862 mm |
| Bradford 18 km · Egbert | 26.0°C 1.3°C cooler | −11.3°C 1.2°C colder | 793 mm |
| Bolton 20 km · Toronto Pearson (Airport) | 27.4°C about the same | −8.9°C 1.2°C milder | 807 mm |
| East Gwillimbury 22 km · Udora | 26.3°C 1.0°C cooler | −11.7°C 1.6°C colder | 883 mm |
King 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 | −1.7°C | −10.1°C | −6.0°C | 64 mm | 40 cm |
| February | −1.0°C | −10.1°C | −5.6°C | 51 mm | 34 cm |
| March | 4.6°C | −5.0°C | −0.2°C | 52 mm | 20 cm |
| April | 11.8°C | 1.2°C | 6.5°C | 79 mm | 7 cm |
| May | 19.3°C | 7.4°C | 13.4°C | 80 mm | under 1 cm |
| June | 24.6°C | 13.0°C | 18.8°C | 87 mm | 0 cm |
| July | 27.3°C | 15.6°C | 21.5°C | 85 mm | 0 cm |
| August | 26.3°C | 14.8°C | 20.6°C | 72 mm | 0 cm |
| September | 21.9°C | 10.4°C | 16.2°C | 83 mm | 0 cm |
| October | 14.3°C | 4.3°C | 9.4°C | 71 mm | 1 cm |
| November | 7.4°C | −0.8°C | 3.3°C | 77 mm | 12 cm |
| December | 1.5°C | −5.8°C | −2.2°C | 63 mm | 33 cm |
| Year | 13.0°C | 2.9°C | 8.0°C | 862 mm | 146 cm |
From −25.6°C to 26.3°C: March’s coldest and warmest days since 1991
From one year to the next, January’s average typically shifts by 3.1°C around its normal of −6.0°C, the widest of any month, while June’s shifts by 1.2°C.
Where King’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Toronto Buttonville (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- 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, 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 King’s climate
How warm does King get in summer?
Of all twelve months, July has the warmest afternoons, about 27.3°C.
How cold does King get in winter?
January nights average −10.1°C, the coldest of the year.
How much rain and snow does King get?
Around 862 mm a year in all, from 87 mm in June down to 51 mm in February.
How long does snow stay on the ground?
Count on about 76 days of snow cover a year, 1 cm or deeper.
Are these figures for King itself?
No, they come from Toronto Buttonville (Airport); ECCC keeps no 1991–2020 normals in King itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for King →
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).