Hardly any Canadian towns see hotter July days than Walpole Island 46
The coldest hours of a January night bottom out at −6.3°C on average. Its January nights stay gentler than in 91% of Canadian towns. A year here swings 36°C from midwinter lows to midsummer highs. Frost comes on about 113 days a year, so leave time to clear the car.
ECCC publishes no normals for Walpole Island 46 itself; the figures are those of Windsor Riverside, 44 km south-west.
A year in Walpole Island 46 at a glance
Each month’s typical high and low, in °C.
What stands out about Walpole Island 46’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Walpole Island 46 feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 113 days, 20°C on 148
Frost comes from October to April, most of all in January (about 27 nights). About 33 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
About 935 mm of rain and snow a year
May brings the most rain and snow; February, the least. On about 109 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 107 cm of snow a year
Snow falls from November to April, most of all in January (about 33 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Walpole Island 46
95% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. That means homes here need less heating than 93% of Canadian towns.
Living with Walpole Island 46’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
On average the last spring frost comes around 24 April and the first autumn frost around 27 October: about 186 frost-free days between.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to May, Jun and Sep.
Parks & trails →Ice storms, floods and heat waves are risks, not averages: they are on Walpole Island 46’s hazards page.
Flood & hazards →ECCC’s normals location: Windsor Riverside
Windsor Riverside is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 44 km south-west |
| Station altitude | 188 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −28.0°C |
| Hottest reading, 1991–2020 | 39.0°C |
| Next-nearest location | Windsor, 49 km |
How Walpole Island 46 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
Nearby places read from a different ECCC location (places on Walpole Island 46’s own would show the same figures). Distances here run 29–45 km: that is how far the nearest places with figures are from Walpole Island 46.
Walpole Island 46 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 | 0.5°C | −6.3°C | −2.9°C | 70 mm | 33 cm |
| February | 2.3°C | −5.6°C | −1.6°C | 62 mm | 26 cm |
| March | 7.8°C | −1.6°C | 3.1°C | 65 mm | 16 cm |
| April | 14.8°C | 4.0°C | 9.4°C | 88 mm | 5 cm |
| May | 21.5°C | 10.1°C | 15.8°C | 94 mm | under 1 cm |
| June | 27.0°C | 16.0°C | 21.5°C | 80 mm | 0 cm |
| July | 29.2°C | 18.4°C | 23.8°C | 87 mm | 0 cm |
| August | 28.0°C | 17.8°C | 22.9°C | 91 mm | 0 cm |
| September | 24.3°C | 13.9°C | 19.1°C | 94 mm | 0 cm |
| October | 17.0°C | 7.7°C | 12.4°C | 69 mm | 0 cm |
| November | 9.5°C | 1.9°C | 5.7°C | 71 mm | 5 cm |
| December | 3.2°C | −2.9°C | 0.2°C | 65 mm | 21 cm |
| Year | 15.4°C | 6.1°C | 10.8°C | 935 mm | 107 cm |
February strays furthest from its normal year to year, by 2.8°C; June the least
Records from 1991 to 2020: no month spans more than March, between −20.0°C (2003) and 28.5°C (2012).
Where Walpole Island 46’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Windsor Riverside, the closest ECCC location with twelve months of temperature normals.
- 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 (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Walpole Island 46’s climate
How warm does Walpole Island 46 get in summer?
Highs reach 29.2°C on an average July day; no month is warmer.
How cold does Walpole Island 46 get in winter?
In January, the coldest month, the typical low is −6.3°C.
How much rain and snow does Walpole Island 46 get?
Rain and snow, with snow counted as water, total 935 mm a year; May leads with 94 mm and February trails with 62 mm.
How long does snow stay on the ground?
Snow lies on the ground for about 54 days in a normal year.
Are these figures for Walpole Island 46 itself?
No, the station behind them is Windsor Riverside, beyond Walpole Island 46’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Walpole Island 46 →
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).