Summer afternoons in Fatima are warmer than in 78% of Canadian towns
Deep winter brings January lows near −13.5°C. Its yearly rain and snow top those of 74% of Canadian towns. October is the wettest month, February the driest. Long walks are most pleasant from May to September, when afternoons reach 19–27°C.
Fatima has no ECCC normals station of its own: every figure here comes from Montréal Trudeau (Airport), 23 km south-west.
A year in Fatima at a glance
Each month’s typical high and low, in °C.
What stands out about Fatima’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Fatima feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 146 days, 20°C on 121
The frost season runs October to April, and January freezes nearly every night. On about 12 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,041 mm a year
On about 122 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 217 cm of snow a year
From October to April snow is likely; January is the peak, at about 52 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Fatima
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. In heating terms, homes need less heating than 62% of Canadian towns.
Living with Fatima’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Plant out after about 29 April; the first frost of autumn usually arrives near 14 October, leaving roughly 167 days without frost.
Highs of 17–27°C with nights of 8°C or more come in May, Jun, Jul, Aug and Sep.
Parks & trails →Expect around 40 days a year when the wind chill sinks below −20.
The air feels heavier than 30 on the humidex for about 50 days a year.
Bad-weather days, from blizzards to floods, get their own page for Fatima: the hazards page.
Flood & hazards →ECCC’s normals location: Montréal Trudeau (Airport)
Behind the 1991–2020 normals for Montréal Trudeau (Airport) are 3 stations, which ECCC combines into one record.
| Distance from the town | 23 km south-west |
| Station altitude | 36 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.8°C |
| Hottest reading, 1991–2020 | 36.6°C |
| Average wind | 15.4 km/h on average, most often from the west |
| Next-nearest location | L'Assomption, 27 km |
How Fatima 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 Quebec.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Fatima’s own would show the same figures). The nearest places to Fatima with figures are 5–12 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Fatima Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Boucherville 5.1 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
| Brossard 12 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Fatima 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 | −5.0°C | −13.5°C | −9.2°C | 86 mm | 52 cm |
| February | −3.4°C | −12.4°C | −8.0°C | 66 mm | 47 cm |
| March | 2.4°C | −6.5°C | −2.0°C | 77 mm | 37 cm |
| April | 11.3°C | 1.1°C | 6.2°C | 90 mm | 15 cm |
| May | 19.4°C | 8.3°C | 13.9°C | 86 mm | 0 cm |
| June | 24.2°C | 13.8°C | 19.0°C | 84 mm | 0 cm |
| July | 26.7°C | 16.7°C | 21.7°C | 91 mm | 0 cm |
| August | 25.7°C | 15.6°C | 20.6°C | 94 mm | 0 cm |
| September | 21.1°C | 10.9°C | 16.0°C | 89 mm | 0 cm |
| October | 13.2°C | 4.5°C | 8.9°C | 103 mm | 1 cm |
| November | 6.1°C | −1.7°C | 2.3°C | 84 mm | 16 cm |
| December | −1.2°C | −8.7°C | −5.0°C | 92 mm | 48 cm |
| Year | 11.7°C | 2.3°C | 7.0°C | 1,041 mm | 217 cm |
Two years in three, January’s average lands within 3.0°C of normal, against the steadier June
The thirty-year records stretch furthest in March: a low of −26.9°C in 1992 and a high of 25.8°C in 2012.
Where Fatima’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Montréal Trudeau (Airport), the nearest location with a full year of temperatures.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Fatima’s climate
How warm does Fatima get in summer?
Afternoons average 26.7°C in July, the warmest time of year.
How cold does Fatima get in winter?
In January, the coldest month, the typical low is −13.5°C.
How much rain and snow does Fatima get?
Count on roughly 1,041 mm a year, heaviest in October (103 mm) and lightest in February (66 mm).
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 101 days a year.
Are these figures for Fatima itself?
No, the station behind them is Montréal Trudeau (Airport), beyond Fatima’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Fatima →
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).