Neither notably warm, cold, wet nor dry, Grand River South sits near the middle of Canadian towns
A typical July afternoon reaches 26.6°C, a January night drops to −10.3°C, and 851 mm of rain and snow falls in a year. Its July heat outdoes that of 70% of Canadian towns. The seasons are far apart: from a winter night to a summer afternoon the average spans 37°C. Plan for rain or snow on about 115 days a year, the days with 1 mm or more.
Read at Kitchener/Waterloo, 2.6 km east: ECCC’s normals for 1991–2020.
A year in Grand River South at a glance
Each month’s typical high and low, in °C.
What stands out about Grand River South’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Grand River South feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 156 frosts and 122 warm days a year
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
851 mm of precipitation in a typical year
The most falls in July, the least in February.
Rain and snow by month
Millimetres
Snowfall: about 115 cm in a normal year
The snow season runs November to April; January brings the most, about 32 cm.
Snowfall by month
Centimetres
ECCC’s Kitchener/Waterloo normals leave snowfall out; the figures here come from Toronto Pearson (Airport), 68 km away.
Heating a home in Grand River South
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. Homes here need less heating than 69% of Canadian towns.
Living with Grand River South’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Frost usually lets go around 8 May and returns near 5 October, about 149 days apart.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul, Aug and Sep.
Parks & trails →A typical year is calm by definition; Grand River South’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Kitchener/Waterloo
Kitchener/Waterloo is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 2.6 km east |
| Station altitude | 322 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 68 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 | Elora, 22 km |
How Grand River South 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
Places around Grand River South whose figures come from another normals location. Grand River South has no close neighbour with figures; the nearest is 14 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Grand River South Kitchener/Waterloo | 26.6°C | −10.3°C | 851 mm |
| Elmira 14 km · Elora | 25.4°C 1.2°C cooler | −10.7°C about the same | 851 mm |
Grand River South weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 |
A February here can run warm or cold, its average moving by about 3.1°C; the steadiest month is June
March has the widest record range, −29.4°C in 2003 to 26.5°C in 2012; the tick on each bar is the month’s normal.
Where Grand River South’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Kitchener/Waterloo (the closest location with all twelve months of temperatures).
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- 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 Grand River South’s climate
How warm does Grand River South get in summer?
Highs reach 26.6°C on an average July day; no month is warmer.
How cold does Grand River South get in winter?
Expect nights around −10.3°C in January; no month is colder.
How much rain and snow does Grand River South 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 Grand River South itself?
Almost: ECCC’s Kitchener/Waterloo location, which gives these figures, lies a short way outside Grand River South.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Grand River South →
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).