Few Canadian towns have warmer summer afternoons than Riverside
The coldest hours of a January night bottom out at −6.3°C on average. None of the 871 towns of 2,500+ in Ontario has milder January nights. Of all months, May brings the most precipitation and February the least. An umbrella or a shovel earns its place on about 109 days a year with 1 mm or more.
Measured at Windsor Riverside, 1.7 km east: ECCC’s normals for 1991–2020.
A year in Riverside at a glance
Each month’s typical high and low, in °C.
What stands out about Riverside’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Riverside feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 113 frosts and 148 warm days a year
Frost comes from October to April, most of all in January (about 27 nights). Some 33 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
About 935 mm of rain and snow a year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 107 cm in a normal 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 Riverside
95% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. Over a year, a home here needs less heating than 93% of Canadian towns.
Living with Riverside’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Seedlings can go out once the average last frost, around 24 April, has passed; autumn’s first, near 27 October, ends a season of about 186 days.
The outdoor season by the averages is May, Jun and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Storms, floods and heat waves sit outside these normals; Riverside’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Windsor Riverside
The page’s figures are ECCC’s 1991–2020 normals for Windsor Riverside, one of its 450 normals locations.
| Distance from the town | 1.7 km east |
| 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, 5.4 km |
How Riverside 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 Riverside whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Riverside Windsor Riverside | 29.2°C | −6.3°C | 935 mm |
| East Windsor 2.6 km · Windsor Riverside | 29.2°C about the same | −6.3°C about the same | 935 mm |
| Fontainebleau 3.2 km · Windsor | 28.3°C 0.9°C cooler | −7.1°C 0.8°C colder | 954 mm |
Riverside 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 |
Two years in three, February’s average lands within 2.8°C of normal, against the steadier June
Bars run from each month’s record low to its record high since 1991. March spans the most, from −20.0°C (2003) to 28.5°C (2012).
Where Riverside’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Windsor Riverside (the closest location with all twelve months of temperatures).
- 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: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Riverside’s climate
How warm does Riverside get in summer?
Of all twelve months, July has the warmest afternoons, about 29.2°C.
How cold does Riverside get in winter?
In January, the coldest month, the typical low is −6.3°C.
How much rain and snow does Riverside get?
Some 935 mm falls in a year. Most of it comes in May (94 mm), the least in February (62 mm).
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 54 days a year.
Are these figures for Riverside itself?
Yes: ECCC’s 1991–2020 normals for Windsor Riverside, which is in Riverside.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Riverside →
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).