Frost comes to Sheldon less often than to 73% of Canadian towns
The warmest part of a July day comes in at 26.6°C on average. By July afternoons alone, it runs hotter than 70% of Canadian towns. Of all months, July brings the most precipitation and February the least. The outdoor season runs from June to September, with highs of 22–27°C.
1991–2020 normals from ECCC’s Hamilton station, 4.9 km west.
A year in Sheldon at a glance
Each month’s typical high and low, in °C.
What stands out about Sheldon’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Sheldon feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 139 frosts and 123 warm days a year
From October to May frost is routine, and in January it comes on almost every night. Some 13 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 902 mm of rain and snow a year
Some 114 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 141 cm in a normal year
From November to April snow is likely; January is the peak, at about 44 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Hamilton publishes no full year of snowfall, so these figures come from Welland-Pelham, 55 km away.
Heating a home in Sheldon
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. Homes here need less heating than 77% of Canadian towns.
Living with Sheldon’s climate
What the normals mean for a garden, a day outside and the depth of winter.
A normal year gives the garden about 164 frost-free days, roughly 1 May to 12 October.
For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Plan for about 20 days a year with a wind chill below −20.
Muggy heat with a humidex over 30 arrives on about 59 days a year.
Thirty-year normals hide the storms and the extremes: the hazards page has Sheldon’s risks.
Flood & hazards →ECCC’s normals location: Hamilton
Hamilton is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 4.9 km west |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Welland-Pelham, 55 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, 14 km |
How Sheldon 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
The nearest places on a normals location of their own: those that share Sheldon’s would only repeat its figures. Sheldon has few close neighbours with figures, so the list reaches 6–28 km out.
Sheldon 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 | −1.4°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 |
A March here can run from −24.6°C to 26.8°C
January is the least predictable month: about two years in three its average lands within 3.0°C of the normal, −5.3°C. June is the steadiest, within 1.1°C.
Where Sheldon’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Hamilton, 1991–2020.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Sheldon’s climate
How warm does Sheldon get in summer?
A normal July afternoon tops out at about 26.6°C, the year’s high point.
How cold does Sheldon get in winter?
Expect nights around −9.2°C in February; no month is colder.
How much rain and snow does Sheldon get?
Precipitation totals 902 mm a year, with July the wettest month (98 mm) and February the driest (53 mm).
How long does snow stay on the ground?
On about 82 days a year the ground keeps at least 1 cm of snow.
Are these figures for Sheldon itself?
Yes. Hamilton, where ECCC’s 1991–2020 normals were measured, lies within Sheldon.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Sheldon →
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).