Midwinter lows in Penetanguishene stay above those of 81% of Canadian towns
Peak summer warmth arrives in July, with afternoons near 25.3°C. The gap between a January night and a July afternoon is 34°C. Precipitation is plentiful here, more than falls on 79% of Canadian towns. From June to September, highs of 21–25°C make it easy to spend the day outdoors.
No ECCC station in Penetanguishene has 1991–2020 normals; the page reads Collingwood, 38 km south-west, instead.
A year in Penetanguishene at a glance
Each month’s typical high and low, in °C.
What stands out about Penetanguishene’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Penetanguishene feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 131 frosts and 111 warm days a year
From October to April frost is routine, and in January it comes on almost every night. Some 10 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
Rain and melted snow: about 1,062 mm a year
The most falls in October, the least in February. On about 141 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Precipitation: Muskoka, 54 km away (Collingwood records no complete year of it).
Snowfall: about 174 cm in a normal year
From October to April snow is likely; December is the peak, at about 42 cm.
Snowfall by month
Centimetres
ECCC’s Collingwood normals leave snowfall out; the figures here come from Egbert, 62 km away.
Heating a home in Penetanguishene
91% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together. Over a year, a home here needs less heating than 76% of Canadian towns.
Living with Penetanguishene’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 →The wind chill passes −20 on about 18 days in a normal year.
Expect around 46 sticky days a year with the humidex above 30.
Storms, floods and heat waves sit outside these normals; Penetanguishene’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Collingwood
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Collingwood.
| Distance from the town | 38 km south-west |
| Station altitude | 178 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Muskoka, 54 km |
| Snowfall from | Egbert, 62 km |
| Coldest reading, 1991–2020 | −29.1°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Average wind | 12.1 km/h on average, most often from the west |
| Next-nearest location | Muskoka, 54 km |
How Penetanguishene 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 Penetanguishene’s would only repeat its figures. Distances here run 13–40 km: that is how far the nearest places with figures are from Penetanguishene.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Penetanguishene Collingwood | 25.3°C | −8.7°C | 1,062 mm |
| Tay 13 km · Muskoka | 25.3°C about the same | −15.3°C 6.6°C colder | 1,062 mm |
| Springwater 35 km · Egbert | 26.0°C 0.7°C warmer | −11.3°C 2.6°C colder | 793 mm |
| Oro-Medonte 38 km · Lagoon City | 24.5°C 0.8°C cooler | −12.6°C 3.9°C colder | 793 mm |
Penetanguishene weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −1.3°C | −8.7°C | −5.0°C | 92 mm | 40 cm |
| February | −0.6°C | −8.4°C | −4.5°C | 56 mm | 33 cm |
| March | 3.7°C | −4.4°C | −0.3°C | 72 mm | 26 cm |
| April | 10.1°C | 1.2°C | 5.6°C | 79 mm | 9 cm |
| May | 17.2°C | 7.2°C | 12.2°C | 93 mm | under 1 cm |
| June | 22.4°C | 12.7°C | 17.6°C | 86 mm | 0 cm |
| July | 25.3°C | 16.2°C | 20.8°C | 100 mm | 0 cm |
| August | 24.9°C | 15.7°C | 20.3°C | 82 mm | 0 cm |
| September | 21.4°C | 12.0°C | 16.7°C | 102 mm | 0 cm |
| October | 14.3°C | 6.3°C | 10.3°C | 111 mm | 3 cm |
| November | 7.6°C | 0.8°C | 4.2°C | 103 mm | 22 cm |
| December | 1.6°C | −4.7°C | −1.6°C | 87 mm | 42 cm |
| Year | 12.2°C | 3.8°C | 8.0°C | 1,062 mm | 174 cm |
March: −26.7°C at its coldest, 27.0°C at its warmest
Year to year, January varies most (a standard deviation of 2.8°C around −5.0°C) and August least (1.1°C).
Where Penetanguishene’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Collingwood (the closest location with all twelve months of temperatures).
- 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: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 Penetanguishene’s climate
How warm does Penetanguishene get in summer?
A normal July afternoon tops out at about 25.3°C, the year’s high point.
How cold does Penetanguishene get in winter?
Deep winter means January, when nights average −8.7°C.
How much rain and snow does Penetanguishene get?
Rain and snow add up to about 1,062 mm of water a year; October brings the most (111 mm), February the least (56 mm).
Are these figures for Penetanguishene itself?
They come from Collingwood, which ECCC uses as the nearest normals location for Penetanguishene.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Penetanguishene →
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).