Photo: P199 · CC BY-SA 3.0Summer afternoons in Winchester are warmer than in 83% of Canadian towns
On a normal January night the air cools to about −14.0°C. Rain or snow is most frequent in July and least in February. Windshields need scraping on about 157 mornings a year, the days the air reaches 0°C or below.
ECCC publishes no normals for Winchester itself; the figures are those of Kemptville, 24 km south-west.
A year in Winchester at a glance
Each month’s typical high and low, in °C.
What stands out about Winchester’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Winchester feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 157 frosts and 121 warm days a year
Frost comes from October to May; in January almost every night freezes. Some 17 nights a year drop under −20°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 925 mm a year
About 116 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Snowfall: about 232 cm in a normal year
Snow falls from October to April, most of all in January (about 59 cm).
Snowfall by month
Centimetres
ECCC’s Kemptville normals leave snowfall out; the figures here come from Ottawa (Airport), 36 km away.
Heating a home in Winchester
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total.
Living with Winchester’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →Plan for about 32 days a year with a wind chill below −20.
The humidex tops 30 on about 53 days a year: muggy days to plan around.
For the weather that does damage, from ice storms to floods, see Winchester’s hazards page.
Flood & hazards →ECCC’s normals location: Kemptville
ECCC builds the Kemptville normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 24 km south-west |
| Station altitude | 99 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Ottawa (Airport), 36 km |
| Coldest reading, 1991–2020 | −35.0°C |
| Hottest reading, 1991–2020 | 36.7°C |
| Average wind | 8.3 km/h on average, most often from the south-west |
| Next-nearest location | Ottawa (Airport), 36 km |
How Winchester 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 Winchester’s would only repeat its figures. No closer places have figures: these lie 21–34 km from Winchester.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Winchester Kemptville | 26.8°C | −14.0°C | 925 mm |
| Embrun 21 km · Ottawa (Airport) | 27.0°C about the same | −14.3°C about the same | 930 mm |
| North Stormont 23 km · Cornwall | 27.3°C 0.5°C warmer | −11.8°C 2.2°C milder | 1,006 mm |
| Limoges 34 km · Angers | 26.2°C 0.6°C cooler | −16.5°C 2.5°C colder | 930 mm |
Winchester weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −4.3°C | −14.0°C | −9.1°C | 70 mm | 59 cm |
| February | −2.4°C | −12.9°C | −7.7°C | 52 mm | 49 cm |
| March | 3.4°C | −7.0°C | −1.8°C | 62 mm | 39 cm |
| April | 11.4°C | 0.3°C | 5.9°C | 88 mm | 12 cm |
| May | 19.3°C | 6.9°C | 13.1°C | 73 mm | under 1 cm |
| June | 24.3°C | 12.3°C | 18.3°C | 82 mm | 0 cm |
| July | 26.8°C | 14.8°C | 20.8°C | 98 mm | 0 cm |
| August | 25.6°C | 13.7°C | 19.7°C | 75 mm | 0 cm |
| September | 21.3°C | 9.4°C | 15.4°C | 83 mm | 0 cm |
| October | 13.6°C | 3.6°C | 8.6°C | 92 mm | 3 cm |
| November | 6.3°C | −2.3°C | 2.0°C | 79 mm | 21 cm |
| December | −0.9°C | −8.8°C | −4.9°C | 72 mm | 50 cm |
| Year | 12.0°C | 1.3°C | 6.7°C | 925 mm | 232 cm |
In March, anything from −28.3°C to 26.3°C
January is the least predictable month: about two years in three its average lands within 3.0°C of the normal, −9.1°C. June is the steadiest, within 1.1°C.
Where Winchester’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Kemptville, 1991–2020.
- 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, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Winchester’s climate
How warm does Winchester get in summer?
Of all twelve months, July has the warmest afternoons, about 26.8°C.
How cold does Winchester get in winter?
Deep winter means January, when nights average −14.0°C.
How much rain and snow does Winchester get?
Over twelve months, rain and melted snow come to 925 mm; the range runs from 52 mm in February to 98 mm in July.
Are these figures for Winchester itself?
They are borrowed from Kemptville, the nearest place to Winchester where ECCC publishes 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Winchester →
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).