Sheridan has warmer summer afternoons than 95% of Canadian towns
Midwinter brings lows of about −8.9°C. Frosty nights are scarcer than in 82% of Canadian towns. June is the wettest month, February the driest. The heating season runs November to April: each of those months averages under 10°C.
The nearest ECCC normals location to Sheridan is Toronto Pearson (Airport), 16 km north, and every figure on this page is its.
A year in Sheridan at a glance
Each month’s typical high and low, in °C.
What stands out about Sheridan’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Sheridan feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 131 days, 20°C on 125
From October to April frost is routine, and in January it comes on almost every night. Some 17 days a year climb past 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 807 mm of rain and snow a year
Some 106 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 115 cm in a normal year
Snow falls from November to April, most of all in January (about 32 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Sheridan
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. By this count, homes here need less heating than 83% of Canadian towns.
Living with Sheridan’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Seedlings can go out once the average last frost, around 27 April, has passed; autumn’s first, near 20 October, ends a season of about 174 days.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Expect around 21 days a year when the wind chill sinks below −20.
About 56 days a year feel above 30 on the humidex.
Thirty-year normals hide the storms and the extremes: the hazards page has Sheridan’s risks.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
Behind the 1991–2020 normals for Toronto Pearson (Airport) are 2 stations, which ECCC combines into one record.
| Distance from the town | 16 km north |
| Station altitude | 173 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.0°C |
| Hottest reading, 1991–2020 | 37.9°C |
| Average wind | 15.7 km/h on average, most often from the west |
| Next-nearest location | Toronto (Island), 24 km |
How Sheridan 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
Places around Sheridan whose figures come from another normals location. Sheridan has few close neighbours with figures, so the list reaches 10–30 km out.
Sheridan 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 | −1.2°C | −8.9°C | −5.0°C | 62 mm | 32 cm |
| February | −0.3°C | −8.5°C | −4.4°C | 50 mm | 28 cm |
| March | 5.0°C | −3.8°C | 0.6°C | 51 mm | 17 cm |
| April | 12.0°C | 1.9°C | 7.0°C | 77 mm | 5 cm |
| May | 19.2°C | 8.2°C | 13.7°C | 78 mm | under 1 cm |
| June | 24.5°C | 13.9°C | 19.2°C | 81 mm | 0 cm |
| July | 27.4°C | 16.6°C | 22.1°C | 74 mm | 0 cm |
| August | 26.3°C | 15.8°C | 21.1°C | 69 mm | 0 cm |
| September | 22.3°C | 11.6°C | 16.9°C | 69 mm | 0 cm |
| October | 14.6°C | 5.3°C | 10.0°C | 67 mm | under 1 cm |
| November | 7.9°C | 0.2°C | 4.1°C | 72 mm | 9 cm |
| December | 1.9°C | −5.0°C | −1.6°C | 59 mm | 24 cm |
| Year | 13.3°C | 3.9°C | 8.6°C | 807 mm | 115 cm |
From −24.7°C to 26.0°C: March’s coldest and warmest days since 1991
Year to year, January varies most (a standard deviation of 3.0°C around −5.0°C) and June least (1.3°C).
Where Sheridan’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Toronto Pearson (Airport) (the closest location with all twelve months of temperatures).
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Sheridan’s climate
How warm does Sheridan get in summer?
The year’s warmest days come in July, with highs averaging 27.4°C.
How cold does Sheridan get in winter?
January nights average −8.9°C, the coldest of the year.
How much rain and snow does Sheridan get?
Some 807 mm falls in a year. Most of it comes in June (81 mm), the least in February (50 mm).
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 69 days a year.
Are these figures for Sheridan itself?
Only indirectly: the readings are made at Toronto Pearson (Airport), outside Sheridan.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Sheridan →
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).