January in Mashteuiatsh bites harder than in 91% of Canadian towns
Expect July afternoons of about 23.7°C. Its July afternoons stay fresher than in 71% of Canadian towns. The wettest month is July; the driest is February. The outdoor season runs from June to August, with highs of 22–24°C.
Mashteuiatsh has no ECCC normals station of its own: every figure here comes from Roberval, 6.3 km south.
A year in Mashteuiatsh at a glance
Each month’s typical high and low, in °C.
What stands out about Mashteuiatsh’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Mashteuiatsh feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
187 frost days and 85 days above 20°C a year
Frost comes from September to May; in January almost every night freezes. Some 45 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
911 mm of precipitation in a typical year
About 124 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
271 cm of snow in a typical year
From October to May snow is likely; December is the peak, at about 55 cm.
Snowfall by month
Centimetres
Heating a home in Mashteuiatsh
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The count adds up, day by day, how far the mean temperature falls short of 18°C. By this count, homes here need more heating than 84% of Canadian towns.
Living with Mashteuiatsh’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
On average the last spring frost comes around 17 May and the first autumn frost around 2 October: about 137 frost-free days between.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul and Aug.
Parks & trails →Bitter wind chill, under −20, comes on about 79 days a year.
Humid summer days, the humidex above 30, number about 22 a year.
For blizzards, floods and wildfire, turn to Mashteuiatsh’s hazards page.
Flood & hazards →ECCC’s normals location: Roberval
Roberval is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 6.3 km south |
| Station altitude | 179 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −40.0°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Average wind | 13.5 km/h on average, most often from the north-west |
| Next-nearest location | Normandin, 37 km |
How Mashteuiatsh 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
Nearby places read from a different ECCC location (places on Mashteuiatsh’s own would show the same figures). Mashteuiatsh has no close neighbour with figures; the nearest is 32 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Mashteuiatsh Roberval | 23.7°C | −20.8°C | 911 mm |
| La Doré 32 km · Normandin | 23.9°C about the same | −23.4°C 2.6°C colder | 911 mm |
Mashteuiatsh 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 | −10.5°C | −20.8°C | −15.7°C | 55 mm | 47 cm |
| February | −8.2°C | −18.8°C | −13.5°C | 45 mm | 44 cm |
| March | −1.2°C | −11.9°C | −6.6°C | 57 mm | 45 cm |
| April | 6.9°C | −3.2°C | 1.9°C | 64 mm | 29 cm |
| May | 16.2°C | 3.8°C | 10.0°C | 71 mm | 4 cm |
| June | 21.6°C | 10.0°C | 15.8°C | 87 mm | 0 cm |
| July | 23.7°C | 13.3°C | 18.5°C | 112 mm | 0 cm |
| August | 22.6°C | 12.2°C | 17.4°C | 104 mm | 0 cm |
| September | 17.7°C | 7.4°C | 12.6°C | 99 mm | under 1 cm |
| October | 9.8°C | 1.3°C | 5.6°C | 81 mm | 8 cm |
| November | 2.3°C | −5.1°C | −1.4°C | 71 mm | 39 cm |
| December | −5.8°C | −14.5°C | −10.2°C | 66 mm | 55 cm |
| Year | 7.9°C | −2.2°C | 2.9°C | 911 mm | 271 cm |
The most changeable month: February, give or take 3.3°C; the steadiest, August
Records from 1991 to 2020: no month spans more than March, between −33.1°C (2001) and 26.2°C (2012).
Where Mashteuiatsh’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Roberval: the nearest of its locations with every month’s 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: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Mashteuiatsh’s climate
How warm does Mashteuiatsh get in summer?
Summer peaks in July: a typical afternoon reaches 23.7°C.
How cold does Mashteuiatsh get in winter?
The coldest nights come in January, averaging −20.8°C.
How much rain and snow does Mashteuiatsh get?
About 911 mm a year, rain and melted snow together. July is the wettest month (112 mm) and February the driest (45 mm).
Are these figures for Mashteuiatsh itself?
Not quite: they come from Roberval, the closest ECCC normals location to Mashteuiatsh.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Mashteuiatsh →
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).