Afternoon heat in Mont-Joli trails that of 92% of Canadian towns
The coldest hours of a January night bottom out at −15.4°C on average. From frozen January to warm July, readings climb 38°C. Winter nights are cold: in January they are colder than in 73% of Canadian towns. Picnics, hikes and garden evenings come into their own from June to September, with highs of 17–23°C.
1991–2020 normals from ECCC’s Mont-Joli location, 2.5 km north-west.
A year in Mont-Joli at a glance
Each month’s typical high and low, in °C.
What stands out about Mont-Joli’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Mont-Joli feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
172 frost days and 72 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Some 16 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
932 mm of precipitation in a typical year
October brings the most rain and snow; April, the least. On about 132 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 323 cm of snow a year
The snow season runs October to May; January brings the most, about 72 cm.
Snowfall by month
Centimetres
Heating a home in Mont-Joli
87% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. By this count, homes here need more heating than 81% of Canadian towns.
Living with Mont-Joli’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Frost usually lets go around 16 May and returns near 14 October, about 150 days apart.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →Expect around 59 days a year when the wind chill sinks below −20.
Plan shade and water for about 16 days a year above 30 on the humidex.
A typical year is calm by definition; Mont-Joli’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Mont-Joli
ECCC builds the Mont-Joli normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 2.5 km north-west |
| Station altitude | 52 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −34.7°C |
| Hottest reading, 1991–2020 | 35.1°C |
| Average wind | 17.3 km/h on average, most often from the west |
| Next-nearest location | Rimouski, 28 km |
How Mont-Joli 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
Places around Mont-Joli whose figures come from another normals location. No closer place has figures: this one lies 23 km from Mont-Joli.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Mont-Joli | 22.9°C | −15.4°C | 932 mm |
| Saint-Anaclet-de-Lessard 23 km · Rimouski | 23.5°C 0.6°C warmer | −14.6°C 0.8°C milder | 965 mm |
Mont-Joli 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 | −7.2°C | −15.4°C | −11.3°C | 74 mm | 72 cm |
| February | −6.2°C | −14.4°C | −10.3°C | 65 mm | 66 cm |
| March | −0.9°C | −8.9°C | −4.9°C | 70 mm | 60 cm |
| April | 6.0°C | −1.9°C | 2.0°C | 64 mm | 22 cm |
| May | 14.0°C | 3.9°C | 9.0°C | 76 mm | 2 cm |
| June | 19.8°C | 9.2°C | 14.6°C | 76 mm | 0 cm |
| July | 22.9°C | 12.9°C | 17.9°C | 93 mm | 0 cm |
| August | 22.1°C | 12.1°C | 17.1°C | 78 mm | 0 cm |
| September | 17.3°C | 8.0°C | 12.7°C | 86 mm | 0 cm |
| October | 9.7°C | 2.5°C | 6.1°C | 97 mm | 4 cm |
| November | 3.5°C | −2.8°C | 0.4°C | 74 mm | 31 cm |
| December | −2.9°C | −9.6°C | −6.2°C | 81 mm | 67 cm |
| Year | 8.2°C | −0.4°C | 3.9°C | 932 mm | 323 cm |
March: −25.4°C at its coldest, 23.3°C at its warmest
From one year to the next, February’s average typically shifts by 2.7°C around its normal of −10.3°C, the widest of any month, while August’s shifts by 0.9°C.
Where Mont-Joli’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Mont-Joli, the nearest location with a full year of temperatures.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 Mont-Joli’s climate
How warm does Mont-Joli get in summer?
Highs reach 22.9°C on an average July day; no month is warmer.
How cold does Mont-Joli get in winter?
In January, the coldest month, the typical low is −15.4°C.
How much rain and snow does Mont-Joli get?
The year adds up to 932 mm. October is the peak month (97 mm) and April the low one (64 mm).
Are these figures for Mont-Joli itself?
Almost: ECCC’s Mont-Joli location, which gives these figures, lies a short way outside Mont-Joli.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Mont-Joli →
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).