A middle-of-the-road climate: South Frontenac is close to most Canadian towns on every count
A typical year brings 984 mm of rain and melted snow, with July afternoons around 25.4°C and January nights around −11.5°C. Precipitation is plentiful here, more than falls on 67% of Canadian towns. September is the wettest month, February the driest. Wet days, with 1 mm of rain or snow or more, come about 128 times a year.
No ECCC station in South Frontenac has 1991–2020 normals; the page reads Kingston, 23 km south, instead.
A year in South Frontenac at a glance
Each month’s typical high and low, in °C.
What stands out about South Frontenac’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in South Frontenac feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
984 mm of precipitation in a typical year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s Kingston normals leave out precipitation and snow; both come from Centreville here, 28 km away.
158 cm of snow in a typical year
Expect snow from October to April, with about 45 cm in January, the snowiest month.
Snowfall by month
Centimetres
Living with South Frontenac’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The outdoor season by the averages is Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Bad-weather days, from blizzards to floods, get their own page for South Frontenac: the hazards page.
Flood & hazards →ECCC’s normals location: Kingston
ECCC builds the Kingston normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 23 km south |
| Station altitude | 93 m |
| Completeness | at least 15 years |
| WMO standard normals | No |
| Precipitation from | Centreville, 28 km |
| Coldest reading, 1991–2020 | −32.8°C |
| Hottest reading, 1991–2020 | 33.7°C |
| Average wind | 14.8 km/h on average, most often from the south |
| Next-nearest location | Centreville, 28 km |
How South Frontenac compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on South Frontenac’s own would show the same figures). The nearest places to South Frontenac with figures are 25–44 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| South Frontenac Kingston | 25.4°C | −11.5°C | 984 mm |
| Stone Mills 25 km · Centreville | 27.2°C 1.8°C warmer | −12.4°C 0.9°C colder | 984 mm |
| Leeds and the Thousand Islands 41 km · Brockville | 26.1°C 0.7°C warmer | −11.3°C about the same | 1,017 mm |
South Frontenac 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 | −2.6°C | −11.5°C | −7.0°C | 86 mm | 45 cm |
| February | −1.8°C | −10.9°C | −6.4°C | 61 mm | 34 cm |
| March | 3.2°C | −5.5°C | −1.1°C | 65 mm | 24 cm |
| April | 10.0°C | 0.9°C | 5.4°C | 88 mm | 7 cm |
| May | 17.6°C | 7.3°C | 12.4°C | 84 mm | under 1 cm |
| June | 22.1°C | 12.5°C | 17.3°C | 90 mm | 0 cm |
| July | 25.4°C | 16.1°C | 20.8°C | 68 mm | 0 cm |
| August | 24.6°C | 15.3°C | 20.0°C | 75 mm | 0 cm |
| September | 20.5°C | 10.7°C | 15.6°C | 100 mm | 0 cm |
| October | 13.8°C | 5.1°C | 9.5°C | 96 mm | 1 cm |
| November | 7.5°C | −0.6°C | 3.5°C | 88 mm | 12 cm |
| December | 1.6°C | −6.0°C | −2.2°C | 83 mm | 35 cm |
| Year | 11.8°C | 2.8°C | 7.3°C | 984 mm | 158 cm |
From −32.8°C to 13.5°C: January’s coldest and warmest days since 1991
Year to year, February varies most (a standard deviation of 3.2°C around −6.4°C) and June least (0.9°C).
Where South Frontenac’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Kingston, the nearest location with a full year 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: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 South Frontenac’s climate
How warm does South Frontenac get in summer?
Afternoons average 25.4°C in July, the warmest time of year.
How cold does South Frontenac get in winter?
Expect nights around −11.5°C in January; no month is colder.
How much rain and snow does South Frontenac get?
Rain and snow add up to about 984 mm of water a year; September brings the most (100 mm), February the least (61 mm).
Are these figures for South Frontenac itself?
They are the closest available: the normals for Kingston, since South Frontenac has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for South Frontenac →
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).