Wet weather: 1,240 mm of rain and snow a year falls on Saint-Louis, more than on 91% of Canadian towns
In July the day’s top temperature is typically 25.8°C. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 40°C apart. Frost is common: about 176 nights a year drop below freezing, more than in 61% of Canadian towns. Comfortable outdoor weather lasts from June to September, with highs of 21–26°C.
Measured at Kouchibougauac, 2.4 km north: ECCC’s normals for 1991–2020.
A year in Saint-Louis at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Louis’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Saint-Louis feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 176 frosts and 104 warm days a year
The frost season runs September to May, and January freezes nearly every night. On about 15 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 1,240 mm of rain and snow a year
October brings the most rain and snow; August, the least. 9th wettest of 61 towns of 2,500+ in New Brunswick. About 121 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
310 cm of snow in a typical year
The snow season runs October to May; January brings the most, about 74 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Kouchibougauac publishes no full year of snowfall, so these figures come from Moncton, 75 km away.
Heating a home in Saint-Louis
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up.
Living with Saint-Louis’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The outdoor season by the averages is Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →For the weather that does damage, from ice storms to floods, see Saint-Louis’s hazards page.
Flood & hazards →ECCC’s normals location: Kouchibougauac
ECCC builds the Kouchibougauac normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 2.4 km north |
| Station altitude | 35 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Moncton, 75 km |
| Coldest reading, 1991–2020 | −32.0°C |
| Hottest reading, 1991–2020 | 37.3°C |
| Next-nearest location | Bouctouche, 39 km |
How Saint-Louis 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 New Brunswick.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Saint-Louis’s own would show the same figures). Saint-Louis has few close neighbours with figures, so the list reaches 21–35 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Louis Kouchibougauac | 25.8°C | −14.1°C | 1,240 mm |
| Richibucto 21 km · Bouctouche | 25.1°C 0.7°C cooler | −13.2°C 0.9°C milder | 1,002 mm |
| Glenelg 30 km · Miramichi | 25.5°C about the same | −15.3°C 1.2°C colder | 1,083 mm |
Saint-Louis 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 | −3.7°C | −14.1°C | −8.9°C | 116 mm | 74 cm |
| February | −1.8°C | −13.3°C | −7.6°C | 90 mm | 65 cm |
| March | 3.2°C | −7.9°C | −2.4°C | 116 mm | 60 cm |
| April | 9.3°C | −1.9°C | 3.8°C | 96 mm | 29 cm |
| May | 16.5°C | 3.6°C | 10.1°C | 89 mm | 2 cm |
| June | 22.3°C | 9.4°C | 15.9°C | 95 mm | 0 cm |
| July | 25.8°C | 13.6°C | 19.7°C | 93 mm | 0 cm |
| August | 25.4°C | 12.8°C | 19.1°C | 83 mm | 0 cm |
| September | 20.5°C | 8.2°C | 14.4°C | 96 mm | 0 cm |
| October | 13.2°C | 2.7°C | 8.0°C | 133 mm | 2 cm |
| November | 6.0°C | −2.6°C | 1.7°C | 109 mm | 19 cm |
| December | −0.4°C | −8.9°C | −4.7°C | 124 mm | 59 cm |
| Year | 11.4°C | 0.1°C | 5.7°C | 1,240 mm | 310 cm |
The most changeable month: January, give or take 2.4°C; the steadiest, August
Records from 1991 to 2020: no month spans more than March, between −27.7°C (1997) and 26.6°C (2012).
Where Saint-Louis’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Kouchibougauac, the closest ECCC location with twelve months of temperature normals.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- 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 Saint-Louis’s climate
How warm does Saint-Louis get in summer?
The warmest month is July, when afternoons average 25.8°C.
How cold does Saint-Louis get in winter?
Expect nights around −14.1°C in January; no month is colder.
How much rain and snow does Saint-Louis get?
Around 1,240 mm a year in all, from 133 mm in October down to 83 mm in August.
Are these figures for Saint-Louis itself?
Yes: ECCC’s 1991–2020 normals for Kouchibougauac, which is in Saint-Louis.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Louis →
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).