Photo: Canadian Postcard Company · Public domainAmherstburg has some of the warmest summer afternoons among Canadian towns
The depth of winter brings overnight lows near −7.0°C. Frosty nights are scarcer than in 86% of Canadian towns. Expect the most rain and snow in May and the least in February. Warm coats and heating bills mark the months from November to April, when means dip under 10°C.
Borrowed figures: Amherstburg has no normals station, so these come from Harrow, 18 km south-east.
A year in Amherstburg at a glance
Each month’s typical high and low, in °C.
What stands out about Amherstburg’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Amherstburg feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 117 days, 20°C on 135
Frosts fall from October to April; January has the most, about 26. About 18 days a year top 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 827 mm a year
On about 101 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
About 140 cm of snow a year
Expect snow from November to April, with about 43 cm in January, the snowiest month.
Snowfall by month
Centimetres
Harrow publishes no full year of snowfall, so these figures come from Windsor, 22 km away.
Heating a home in Amherstburg
94% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. In heating terms, homes need less heating than 92% of Canadian towns.
Living with Amherstburg’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Seedlings can go out once the average last frost, around 25 April, has passed; autumn’s first, near 23 October, ends a season of about 180 days.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to May, Jun, Aug and Sep.
Parks & trails →Roughly 10 days a year feel colder than −20 in the wind.
The air feels heavier than 30 on the humidex for about 69 days a year.
What averages leave out, the floods and ice storms, is on Amherstburg’s hazards page.
Flood & hazards →ECCC’s normals location: Harrow
ECCC builds the Harrow normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 18 km south-east |
| Station altitude | 191 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Windsor, 22 km |
| Coldest reading, 1991–2020 | −27.2°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 11.7 km/h on average, most often from the west |
| Next-nearest location | Windsor, 22 km |
How Amherstburg 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 Amherstburg’s would only repeat its figures.
Amherstburg 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 | −0.4°C | −7.0°C | −3.7°C | 60 mm | 43 cm |
| February | 1.2°C | −6.0°C | −2.5°C | 52 mm | 33 cm |
| March | 6.4°C | −2.1°C | 2.2°C | 68 mm | 23 cm |
| April | 13.4°C | 3.2°C | 8.3°C | 79 mm | 6 cm |
| May | 20.0°C | 9.7°C | 14.8°C | 81 mm | 0 cm |
| June | 25.4°C | 15.4°C | 20.4°C | 72 mm | 0 cm |
| July | 27.6°C | 17.6°C | 22.6°C | 70 mm | 0 cm |
| August | 26.5°C | 16.7°C | 21.6°C | 73 mm | 0 cm |
| September | 22.9°C | 12.9°C | 17.9°C | 77 mm | 0 cm |
| October | 15.8°C | 6.9°C | 11.4°C | 67 mm | under 1 cm |
| November | 8.5°C | 1.4°C | 5.0°C | 65 mm | 5 cm |
| December | 2.4°C | −3.5°C | −0.6°C | 64 mm | 30 cm |
| Year | 14.1°C | 5.4°C | 9.8°C | 827 mm | 140 cm |
Two years in three, January’s average lands within 2.8°C of normal, against the steadier June
Over 1991–2020, March saw both −22.8°C (2003) and 24.5°C (2012), the widest span of any month.
Where Amherstburg’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Harrow, its nearest location with complete temperatures.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- 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, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Amherstburg’s climate
How warm does Amherstburg get in summer?
The year’s warmest days come in July, with highs averaging 27.6°C.
How cold does Amherstburg get in winter?
January nights average −7.0°C, the coldest of the year.
How much rain and snow does Amherstburg get?
A normal year brings 827 mm, snow included as water: May is wettest at 81 mm, February driest at 52 mm.
Are these figures for Amherstburg itself?
No. ECCC measures normals at Harrow, not in Amherstburg; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Amherstburg →
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).