Photo: Interaction Qui Ltée · Public domainNights turn raw in Saint-Ambroise each January, colder than in 89% of Canadian towns
High summer brings afternoon highs near 24.5°C. By July afternoons alone, it runs cooler than 67% of Canadian towns. Some 45°C separates winter nights from summer afternoons. The furnace earns its keep from October to April, the months that average under 10°C.
The nearest ECCC normals location to Saint-Ambroise is Bagotville, 35 km south-east, and every figure on this page is its.
A year in Saint-Ambroise at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Ambroise’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Ambroise feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
188 frost days and 92 days above 20°C a year
Frost comes from September to May; in January almost every night freezes. Some 43 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
928 mm of precipitation in a typical year
The most falls in July, the least in February. About 143 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
302 cm of snow in a typical year
Expect snow from October to May, with about 65 cm in December, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Ambroise
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. A house here needs more heating than 83% of Canadian towns.
Living with Saint-Ambroise’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Count on about 128 frost-free days: the last frost averages 20 May, the first 27 September.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul and Aug.
Parks & trails →The wind chill passes −20 on about 76 days in a normal year.
About 23 days a year turn sultry, with the humidex past 30.
What averages leave out, the floods and ice storms, is on Saint-Ambroise’s hazards page.
Flood & hazards →ECCC’s normals location: Bagotville
Bagotville is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 35 km south-east |
| Station altitude | 159 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −40.6°C |
| Hottest reading, 1991–2020 | 38.4°C |
| Average wind | 14.9 km/h on average, most often from the west |
| Next-nearest location | Roberval, 70 km |
How Saint-Ambroise 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 Saint-Ambroise’s would only repeat its figures. No closer place has figures: this one lies 24 km from Saint-Ambroise.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Ambroise Bagotville | 24.5°C | −20.4°C | 928 mm |
| Alma 24 km · Roberval | 23.7°C 0.8°C cooler | −20.8°C about the same | 911 mm |
Saint-Ambroise 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 | −9.7°C | −20.4°C | −15.1°C | 58 mm | 62 cm |
| February | −7.4°C | −18.7°C | −13.1°C | 48 mm | 52 cm |
| March | −0.7°C | −11.8°C | −6.3°C | 58 mm | 49 cm |
| April | 7.4°C | −3.2°C | 2.1°C | 61 mm | 23 cm |
| May | 16.6°C | 3.7°C | 10.2°C | 78 mm | 3 cm |
| June | 22.3°C | 9.6°C | 16.0°C | 89 mm | 0 cm |
| July | 24.5°C | 12.9°C | 18.7°C | 112 mm | 0 cm |
| August | 23.4°C | 11.8°C | 17.6°C | 100 mm | 0 cm |
| September | 18.2°C | 6.9°C | 12.6°C | 102 mm | 0 cm |
| October | 9.9°C | 1.4°C | 5.7°C | 92 mm | 8 cm |
| November | 2.3°C | −5.4°C | −1.5°C | 66 mm | 39 cm |
| December | −5.1°C | −13.9°C | −9.5°C | 64 mm | 65 cm |
| Year | 8.5°C | −2.3°C | 3.1°C | 928 mm | 302 cm |
The most changeable month: January, give or take 3.2°C; the steadiest, August
March has the widest record range, −33.0°C in 2014 to 25.2°C in 2012; the tick on each bar is the month’s normal.
Where Saint-Ambroise’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Bagotville, the closest ECCC location with twelve months of temperature normals.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- 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 Saint-Ambroise’s climate
How warm does Saint-Ambroise get in summer?
A normal July afternoon tops out at about 24.5°C, the year’s high point.
How cold does Saint-Ambroise get in winter?
In January, the coldest month, the typical low is −20.4°C.
How much rain and snow does Saint-Ambroise get?
July is the wettest month at 112 mm and February the driest at 48 mm, for 928 mm over the year.
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 156 days a year.
Are these figures for Saint-Ambroise itself?
They are the closest available: the normals for Bagotville, since Saint-Ambroise has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Ambroise →
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).