Barnstown gets fewer frosts than 73% of Canadian towns
Sunny July days climb to about 26.6°C. In July, afternoons here are warmer than in 70% of Canadian towns. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 36°C apart. Picnics, hikes and garden evenings come into their own from June to September, with highs of 22–27°C.
Read at Hamilton, 6.1 km south-west: ECCC’s normals for 1991–2020.
A year in Barnstown at a glance
Each month’s typical high and low, in °C.
What stands out about Barnstown’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Barnstown feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 139 days, 20°C on 123
Frost comes from October to May; in January almost every night freezes. 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 brings the most rain and snow; February, the least. About 114 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 141 cm in a normal year
Expect snow from November to April, with about 44 cm in January, the snowiest month.
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, 56 km away.
Heating a home in Barnstown
92% 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. By this count, homes here need less heating than 77% of Canadian towns.
Living with Barnstown’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Count on about 164 frost-free days: the last frost averages 1 May, the first 12 October.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul, Aug and Sep.
Parks & trails →Roughly 20 days a year feel colder than −20 in the wind.
Humid summer days, the humidex above 30, number about 59 a year.
Storms, floods and heat waves sit outside these normals; Barnstown’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Hamilton
Behind the 1991–2020 normals for Hamilton are 2 stations, which ECCC combines into one record.
| Distance from the town | 6.1 km south-west |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Welland-Pelham, 56 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, 13 km |
How Barnstown 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 Barnstown’s would only repeat its figures. Distances here run 4–29 km: that is how far the nearest places with figures are from Barnstown.
Barnstown weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and 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 |
In March, anything from −24.6°C to 26.8°C
Bars run from each month’s record low to its record high over 1991–2020; January is the month whose average wanders most from year to year (±3.0°C around −5.3°C), June the one that wanders least (±1.1°C).
Where Barnstown’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Hamilton, 1991–2020, chosen as the nearest location with a full temperature record.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- 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, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Barnstown’s climate
How warm does Barnstown get in summer?
Highs reach 26.6°C on an average July day; no month is warmer.
How cold does Barnstown get in winter?
At its coldest, in February, the normal low is −9.2°C.
How much rain and snow does Barnstown get?
About 902 mm a year, rain and melted snow together. July is the wettest month (98 mm) and February the driest (53 mm).
How long does snow stay on the ground?
Count on about 82 days of snow cover a year, 1 cm or deeper.
Are these figures for Barnstown itself?
They are the normals for Hamilton, measured just outside Barnstown itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Barnstown →
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).