Photo: P199 · CC BY-SA 3.0Lucan gets fewer frosts than 75% of Canadian towns
July afternoons average 26.6°C. Summer afternoons here are warmer than in 70% of Canadian towns. Winter and summer sit 36°C apart. Heating does most of its work from October to April, in months below 10°C on average.
The nearest ECCC normals location to Lucan is London, 26 km south-east, and every figure on this page is its.
A year in Lucan at a glance
Each month’s typical high and low, in °C.
What stands out about Lucan’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Lucan feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 139 days, 20°C on 128
From October to May frost is routine, and in January it comes on almost every night. About 11 days a year top 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 962 mm of rain and snow a year
September is the wettest month and February the driest. Some 128 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
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
Snow on the ground by month
Centimetres at month’s end
ECCC’s London normals leave snowfall out; the figures here come from Strathroy-Mullifarry, 34 km away.
Heating a home in Lucan
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The total grows by a degree for every degree a day’s mean sits under 18°C. By this count, homes here need less heating than 79% of Canadian towns.
Living with Lucan’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
On average the last spring frost comes around 3 May and the first autumn frost around 16 October: about 165 frost-free days between.
Plan time outside for Jun, Jul, Aug and Sep: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →Wind chill falls below −20 on about 18 days a year: cover skin and dress in layers.
A humidex above 30 marks about 55 days in a normal year.
Averages smooth over blizzards, ice storms, floods and heat waves; Lucan’s hazards page covers the risks.
Flood & hazards →ECCC’s normals location: London
Behind the 1991–2020 normals for London are 3 stations, which ECCC combines into one record.
| Distance from the town | 26 km south-east |
| Station altitude | 278 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Strathroy-Mullifarry, 34 km |
| Coldest reading, 1991–2020 | −29.1°C |
| Hottest reading, 1991–2020 | 37.0°C |
| Average wind | 14.0 km/h on average, most often from the west |
| Next-nearest location | Strathroy-Mullifarry, 34 km |
How Lucan 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
Places around Lucan whose figures come from another normals location. The nearest place to Lucan with figures is 18 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lucan London | 26.6°C | −9.1°C | 962 mm |
| Exeter 18 km · Strathroy-Mullifarry | 27.3°C 0.7°C warmer | −8.5°C 0.6°C milder | 966 mm |
Lucan 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 | −1.6°C | −9.1°C | −5.4°C | 79 mm | 43 cm |
| February | −0.6°C | −9.0°C | −4.8°C | 63 mm | 32 cm |
| March | 4.6°C | −4.5°C | 0.1°C | 67 mm | 20 cm |
| April | 12.2°C | 1.4°C | 6.8°C | 89 mm | 5 cm |
| May | 19.3°C | 7.7°C | 13.5°C | 89 mm | under 1 cm |
| June | 24.4°C | 13.2°C | 18.8°C | 86 mm | 0 cm |
| July | 26.6°C | 15.3°C | 21.0°C | 81 mm | 0 cm |
| August | 25.7°C | 14.4°C | 20.1°C | 67 mm | 0 cm |
| September | 22.1°C | 10.5°C | 16.3°C | 93 mm | 0 cm |
| October | 14.7°C | 5.0°C | 9.9°C | 83 mm | 2 cm |
| November | 7.5°C | −0.3°C | 3.6°C | 88 mm | 13 cm |
| December | 1.4°C | −5.2°C | −2.0°C | 79 mm | 37 cm |
| Year | 13.0°C | 3.3°C | 8.2°C | 962 mm | 152 cm |
From year to year, February moves by 3.0°C, more than any month, and June least
March has the widest record range, −25.6°C in 2003 to 27.2°C in 2012; the tick on each bar is the month’s normal.
Where Lucan’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for London, 1991–2020, chosen as the nearest location with a full temperature record.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- 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 Lucan’s climate
How warm does Lucan get in summer?
At its warmest, in July, the normal high is 26.6°C.
How cold does Lucan get in winter?
The coldest nights come in January, averaging −9.1°C.
How much rain and snow does Lucan get?
Some 962 mm falls in a year. Most of it comes in September (93 mm), the least in February (63 mm).
Are these figures for Lucan itself?
Not directly: Lucan has no ECCC normals of its own, and London stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lucan →
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).