Photo: J. S. Bond · CC BY-SA 3.0Clinton has milder winter nights than 83% of Canadian towns
On a normal July day the thermometer tops out near 24.4°C. A year here swings 32°C from midwinter lows to midsummer highs. Its July afternoons stay fresher than in 67% of Canadian towns. Warm coats and heating bills mark the months from November to April, when means dip under 10°C.
These are not Clinton’s own readings: ECCC keeps no normals there, so the page uses Goderich, 18 km north-west.
A year in Clinton at a glance
Each month’s typical high and low, in °C.
What stands out about Clinton’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Clinton feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 134 days, 20°C on 109
From October to May frost is routine, and in January it comes on almost every night. Heat of 30°C or more comes on about 4 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 966 mm of rain and snow a year
November is the wettest month and February the driest. About 132 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s Goderich normals leave out precipitation and snow; both come from Strathroy-Mullifarry here, 75 km away.
About 152 cm of snow a year
Snow falls from October to April, most of all in January (about 43 cm).
Snowfall by month
Centimetres
Heating a home in Clinton
90% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
The total grows by a degree for every degree a day’s mean sits under 18°C. Over a year, a home here needs less heating than 76% of Canadian towns.
Living with Clinton’s climate
What the normals mean for a garden, a day outside and the depth of winter.
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 →A wind chill below −20 is part of about 17 days a year here.
Plan shade and water for about 44 days a year above 30 on the humidex.
Severe weather is a separate story from the averages: see Clinton’s hazards page.
Flood & hazards →ECCC’s normals location: Goderich
Behind the 1991–2020 normals for Goderich are 2 stations, which ECCC combines into one record.
| Distance from the town | 18 km north-west |
| Station altitude | 214 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | Strathroy-Mullifarry, 75 km |
| Coldest reading, 1991–2020 | −31.1°C |
| Hottest reading, 1991–2020 | 34.4°C |
| Average wind | 16.8 km/h on average, most often from the south |
| Next-nearest location | Strathroy-Mullifarry, 75 km |
How Clinton 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
The nearest places on a normals location of their own: those that share Clinton’s would only repeat its figures. No closer places have figures: these lie 34–49 km from Clinton.
Clinton 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 | −7.8°C | −4.6°C | 81 mm | 43 cm |
| February | −0.6°C | −8.0°C | −4.3°C | 62 mm | 32 cm |
| March | 3.8°C | −4.4°C | −0.3°C | 66 mm | 20 cm |
| April | 10.6°C | 1.1°C | 5.9°C | 88 mm | 5 cm |
| May | 17.4°C | 7.1°C | 12.3°C | 84 mm | under 1 cm |
| June | 22.4°C | 12.4°C | 17.4°C | 86 mm | 0 cm |
| July | 24.4°C | 14.8°C | 19.6°C | 78 mm | 0 cm |
| August | 24.0°C | 14.5°C | 19.3°C | 81 mm | 0 cm |
| September | 21.0°C | 11.2°C | 16.1°C | 88 mm | 0 cm |
| October | 14.3°C | 6.0°C | 10.2°C | 84 mm | 2 cm |
| November | 7.3°C | 0.8°C | 4.1°C | 90 mm | 13 cm |
| December | 1.7°C | −3.9°C | −1.1°C | 79 mm | 37 cm |
| Year | 12.1°C | 3.7°C | 7.9°C | 966 mm | 152 cm |
February strays furthest from its normal year to year, by 3.0°C; August the least
March has the widest record range, −25.5°C in 2003 to 25.1°C in 2012; the tick on each bar is the month’s normal.
Where Clinton’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Goderich, the closest ECCC location with twelve months of temperature normals.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- 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 Clinton’s climate
How warm does Clinton get in summer?
Summer peaks in July: a typical afternoon reaches 24.4°C.
How cold does Clinton get in winter?
Lows sink to −8.0°C on an average February night.
How much rain and snow does Clinton get?
Measured as water, a year brings 966 mm: 90 mm in November, the wettest month, and 62 mm in February, the driest.
Are these figures for Clinton itself?
They describe Goderich, the nearest normals location, rather than Clinton itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Clinton →
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).