Hardly any Canadian towns see harsher January nights than Wemindji
Peak summer warmth arrives in July, with afternoons near 20.7°C. Expect the most rain and snow in September and the least in February. By July afternoons alone, it runs cooler than almost every Canadian town. Homes need heating from September to May, the months averaging under 10°C.
Every figure here comes from La Grande Rivière, 99 km north-east; ECCC has no normals closer to Wemindji, so they describe the wider area.
A year in Wemindji at a glance
Each month’s typical high and low, in °C.
What stands out about Wemindji’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Wemindji feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
228 frost days and 48 days above 20°C a year
Frost comes from September to June; in January almost every night freezes. On about 78 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
About 702 mm of rain and snow a year
511th wettest of 514 towns of 2,500+ in Quebec. About 125 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 236 cm in a normal year
The snow season runs September to June; November brings the most, about 55 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Wemindji
84% of a year’s heating need falls between October and April. Months averaging under 10°C: September to May.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. Homes here need more heating than almost every Canadian town.
Living with Wemindji’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
About 95 days a year pass without frost, from an average last frost of 16 June to a first of 21 September.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jul and Aug.
Parks & trails →Winter brings about 116 days with a wind chill below −20.
On some 5 days a year the humidex climbs past 30.
Averages smooth over blizzards, ice storms, floods and heat waves; Wemindji’s hazards page covers the risks.
Flood & hazards →ECCC’s normals location: La Grande Rivière
Behind the 1991–2020 normals for La Grande Rivière are 2 stations, which ECCC combines into one record.
| Distance from the town | 99 km north-east |
| Station altitude | 195 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −42.1°C |
| Hottest reading, 1991–2020 | 37.3°C |
| Average wind | 14.9 km/h on average, most often from the west |
| Next-nearest location | Moosonee, 229 km |
How Wemindji 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.
Wemindji 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 | −17.2°C | −26.1°C | −21.7°C | 31 mm | 30 cm |
| February | −15.4°C | −26.1°C | −20.8°C | 22 mm | 22 cm |
| March | −7.9°C | −20.0°C | −14.0°C | 28 mm | 25 cm |
| April | 0.5°C | −10.6°C | −5.1°C | 29 mm | 20 cm |
| May | 10.1°C | −1.6°C | 4.3°C | 44 mm | 10 cm |
| June | 18.1°C | 4.9°C | 11.5°C | 62 mm | 2 cm |
| July | 20.7°C | 8.8°C | 14.8°C | 86 mm | 0 cm |
| August | 18.8°C | 8.3°C | 13.6°C | 90 mm | 0 cm |
| September | 12.9°C | 4.3°C | 8.6°C | 110 mm | 3 cm |
| October | 5.5°C | −0.7°C | 2.4°C | 89 mm | 26 cm |
| November | −2.5°C | −8.3°C | −5.4°C | 68 mm | 55 cm |
| December | −10.8°C | −18.1°C | −14.5°C | 44 mm | 43 cm |
| Year | 2.7°C | −7.1°C | −2.2°C | 702 mm | 236 cm |
From year to year, January moves by 3.5°C, more than any month, and July least
Bars run from each month’s record low to its record high since 1991. May spans the most, from −22.6°C (2019) to 32.6°C (1998).
Where Wemindji’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, La Grande Rivière, 1991–2020.
- 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, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Wemindji’s climate
How warm does Wemindji get in summer?
Expect highs near 20.7°C in July, the hottest month on average.
How cold does Wemindji get in winter?
On a normal January night the air drops to −26.1°C, the coldest of the year.
How much rain and snow does Wemindji get?
About 702 mm a year, rain and melted snow together. September is the wettest month (110 mm) and February the driest (22 mm).
How long does snow stay on the ground?
Around 193 days a year see 1 cm of snow or more lying.
Are these figures for Wemindji itself?
They are the figures for La Grande Rivière, which read better as the region’s climate than Wemindji’s own.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Wemindji →
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).