Photo: Hayden Soloviev · CC BY 4.0Wet weather: 1,041 mm of rain and snow a year falls on Lacolle, more than on 74% of Canadian towns
July afternoons average 26.6°C. Summer afternoons here are warmer than in 70% of Canadian towns. Expect the most rain and snow in October and the least in February. For walks and days out, the stretch from June to September brings highs of 21–27°C.
ECCC publishes no normals for Lacolle itself; the figures are those of L'Acadie, 24 km north.
A year in Lacolle at a glance
Each month’s typical high and low, in °C.
What stands out about Lacolle’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Lacolle feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 149 frosts and 124 warm days a year
From October to April frost is routine, and in January it comes on almost every night. Some 15 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
About 1,041 mm of rain and snow a year
On about 122 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Precipitation and snowfall: Montréal Trudeau (Airport), 53 km away (L'Acadie records no complete year of either).
About 217 cm of snow a year
Snow falls from October to April, most of all in January (about 52 cm).
Snowfall by month
Centimetres
Heating a home in Lacolle
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together.
Living with Lacolle’s climate
What the normals mean for a garden, a day outside and the depth of winter.
For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →About 36 days a year bring a wind chill under −20, when bare skin chills fast.
Roughly 50 days a year feel hotter than 30 once humidity is counted.
Bad-weather days, from blizzards to floods, get their own page for Lacolle: the hazards page.
Flood & hazards →ECCC’s normals location: L'Acadie
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for L'Acadie.
| Distance from the town | 24 km north |
| Station altitude | 44 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Montréal Trudeau (Airport), 53 km |
| Coldest reading, 1991–2020 | −32.5°C |
| Hottest reading, 1991–2020 | 36.1°C |
| Average wind | 11.4 km/h on average, most often from the west |
| Next-nearest location | Frelighsburg, 42 km |
How Lacolle 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 Quebec.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Lacolle’s would only repeat its figures. No closer place has figures: this one lies 16 km from Lacolle.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lacolle L'Acadie | 26.6°C | −13.6°C | 1,041 mm |
| Saint-Georges-de-Clarenceville 16 km · Frelighsburg | 25.6°C 1.0°C cooler | −12.9°C 0.7°C milder | 1,340 mm |
Lacolle weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −4.3°C | −13.6°C | −9.0°C | 86 mm | 52 cm |
| February | −2.9°C | −12.7°C | −7.8°C | 66 mm | 47 cm |
| March | 2.6°C | −6.7°C | −2.1°C | 77 mm | 37 cm |
| April | 11.1°C | 0.7°C | 5.9°C | 90 mm | 15 cm |
| May | 19.5°C | 7.8°C | 13.7°C | 86 mm | 0 cm |
| June | 24.2°C | 13.2°C | 18.7°C | 84 mm | 0 cm |
| July | 26.6°C | 15.5°C | 21.1°C | 91 mm | 0 cm |
| August | 25.3°C | 13.9°C | 19.6°C | 94 mm | 0 cm |
| September | 21.4°C | 9.7°C | 15.6°C | 89 mm | 0 cm |
| October | 13.6°C | 4.1°C | 8.9°C | 103 mm | 1 cm |
| November | 6.1°C | −1.7°C | 2.2°C | 84 mm | 16 cm |
| December | −0.7°C | −8.6°C | −4.7°C | 92 mm | 48 cm |
| Year | 11.9°C | 1.8°C | 6.8°C | 1,041 mm | 217 cm |
A March here can run from −28.7°C to 25.4°C
January is the least predictable month: about two years in three its average lands within 2.9°C of the normal, −9.0°C. August is the steadiest, within 1.0°C.
Where Lacolle’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for L'Acadie from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- 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 Lacolle’s climate
How warm does Lacolle get in summer?
Of all twelve months, July has the warmest afternoons, about 26.6°C.
How cold does Lacolle get in winter?
At its coldest, in January, the normal low is −13.6°C.
How much rain and snow does Lacolle get?
Precipitation totals 1,041 mm a year, with October the wettest month (103 mm) and February the driest (66 mm).
Are these figures for Lacolle itself?
They come from L'Acadie, which ECCC uses as the nearest normals location for Lacolle.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lacolle →
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).