No extremes in Plattsville: its weather tracks the middle of Canadian towns
A typical January night drops to −10.3°C and a July afternoon reaches 26.6°C; 851 mm of rain and snow falls in a year. Summer afternoons here are warmer than in 70% of Canadian towns. Expect the most rain and snow in July and the least in February. The furnace earns its keep from October to April, the months that average under 10°C.
These are not Plattsville’s own readings: ECCC keeps no normals there, so the page uses Kitchener/Waterloo, 29 km north-east.
A year in Plattsville at a glance
Each month’s typical high and low, in °C.
What stands out about Plattsville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Plattsville feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 156 days, 20°C on 122
The frost season runs October to May, and January freezes nearly every night. Some 7 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 851 mm a year
On about 115 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Snowfall: about 115 cm in a normal year
Expect snow from November to April, with about 32 cm in January, the snowiest month.
Snowfall by month
Centimetres
ECCC’s Kitchener/Waterloo normals leave snowfall out; the figures here come from Toronto Pearson (Airport), 90 km away.
Heating a home in Plattsville
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. Homes here need less heating than 69% of Canadian towns.
Living with Plattsville’s climate
What the normals mean for a garden, a day outside and the depth of winter.
From about 8 May to 5 October the garden is usually clear of frost, some 149 days.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →For the weather that does damage, from ice storms to floods, see Plattsville’s hazards page.
Flood & hazards →ECCC’s normals location: Kitchener/Waterloo
ECCC builds the Kitchener/Waterloo normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 29 km north-east |
| Station altitude | 322 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 90 km |
| Coldest reading, 1991–2020 | −34.1°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Average wind | 13.8 km/h on average, most often from the west |
| Next-nearest location | Delhi, 41 km |
How Plattsville compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Ontario.
Nearby towns’ climate
Places around Plattsville whose figures come from another normals location. The nearest places to Plattsville with figures are 18–28 km away.
Plattsville weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −2.3°C | −10.3°C | −6.3°C | 66 mm | 32 cm |
| February | −1.4°C | −10.3°C | −5.9°C | 46 mm | 28 cm |
| March | 4.1°C | −5.6°C | −0.8°C | 57 mm | 17 cm |
| April | 11.6°C | 0.1°C | 5.9°C | 81 mm | 5 cm |
| May | 19.0°C | 6.2°C | 12.6°C | 80 mm | under 1 cm |
| June | 24.1°C | 11.5°C | 17.8°C | 81 mm | 0 cm |
| July | 26.6°C | 13.7°C | 20.2°C | 96 mm | 0 cm |
| August | 25.5°C | 12.7°C | 19.1°C | 67 mm | 0 cm |
| September | 21.6°C | 8.7°C | 15.2°C | 75 mm | 0 cm |
| October | 14.1°C | 3.4°C | 8.8°C | 71 mm | under 1 cm |
| November | 6.8°C | −1.6°C | 2.6°C | 75 mm | 9 cm |
| December | 0.7°C | −6.3°C | −2.8°C | 55 mm | 24 cm |
| Year | 12.5°C | 1.9°C | 7.2°C | 851 mm | 115 cm |
March has run from −29.4°C to 26.5°C in thirty years
From one year to the next, February’s average typically shifts by 3.1°C around its normal of −5.9°C, the widest of any month, while June’s shifts by 1.1°C.
Where Plattsville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Kitchener/Waterloo, 1991–2020.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Plattsville’s climate
How warm does Plattsville get in summer?
Of all twelve months, July has the warmest afternoons, about 26.6°C.
How cold does Plattsville get in winter?
Winter bottoms out in January, with lows near −10.3°C.
How much rain and snow does Plattsville get?
The yearly total is about 851 mm. July gets 96 mm, the most of any month; February gets 46 mm, the least.
Are these figures for Plattsville itself?
No, the station behind them is Kitchener/Waterloo, beyond Plattsville’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Plattsville →
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).