Photo: Quintin Soloviev · CC BY 4.0More rain and snow fall on St. Stephen than on 83% of Canadian towns: 1,125 mm a year
The depth of winter brings overnight lows near −13.6°C. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 39°C apart. Heating does most of its work from October to April, in months below 10°C on average.
Read at St. Stephen, 3.8 km north-east: ECCC’s normals for 1991–2020.
A year in St. Stephen at a glance
Each month’s typical high and low, in °C.
What stands out about St. Stephen’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in St. Stephen feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
172 frost days a year
Frost comes from September to May; in January almost every night freezes. On about 16 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
About 1,125 mm of rain and snow a year
October is the wettest month and August the driest. About 109 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
ECCC’s St. Stephen normals leave precipitation out; the figures here come from Point Lepreau, 67 km away.
241 cm of snow in a typical year
The snow season runs November to April; January brings the most, about 64 cm.
Snowfall by month
Centimetres
ECCC’s St. Stephen normals leave snowfall out; the figures here come from Fredericton (Airport), 96 km away.
Living with St. Stephen’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plan time outside for Jun, Jul and Aug: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →Wind chill falls below −20 on about 26 days a year: cover skin and dress in layers.
Count on some 37 humid days a year with the humidex past 30.
For blizzards, floods and wildfire, turn to St. Stephen’s hazards page.
Flood & hazards →ECCC’s normals location: St. Stephen
Behind the 1991–2020 normals for St. Stephen are 2 stations, which ECCC combines into one record.
| Distance from the town | 3.8 km north-east |
| Station altitude | 26 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Point Lepreau, 67 km |
| Snowfall from | Fredericton (Airport), 96 km |
| Coldest reading, 1991–2020 | −33.0°C |
| Hottest reading, 1991–2020 | 35.2°C |
| Average wind | 7.5 km/h on average, most often from the west |
| Next-nearest location | Grand Manan, 66 km |
How St. Stephen compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in New Brunswick.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on St. Stephen’s own would show the same figures). St. Stephen has no close neighbour with figures; the nearest is 37 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| St. Stephen | 25.7°C | −13.6°C | 1,125 mm |
| Saint George 37 km · Point Lepreau | 19.9°C 5.8°C cooler | −9.5°C 4.1°C milder | 1,125 mm |
St. Stephen 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 | −2.1°C | −13.6°C | −8.0°C | 82 mm | 64 cm |
| February | −0.5°C | −12.7°C | −6.6°C | 74 mm | 49 cm |
| March | 4.0°C | −7.3°C | −1.7°C | 94 mm | 46 cm |
| April | 10.7°C | −1.0°C | 4.8°C | 100 mm | 17 cm |
| May | 17.4°C | 4.2°C | 10.9°C | 96 mm | 1 cm |
| June | 22.1°C | 9.1°C | 15.6°C | 109 mm | 0 cm |
| July | 25.7°C | 12.7°C | 19.2°C | 76 mm | 0 cm |
| August | 25.3°C | 11.9°C | 18.6°C | 65 mm | 0 cm |
| September | 21.3°C | 7.5°C | 14.4°C | 99 mm | 0 cm |
| October | 14.0°C | 2.1°C | 8.1°C | 120 mm | 1 cm |
| November | 7.2°C | −2.6°C | 2.3°C | 103 mm | 13 cm |
| December | 1.2°C | −8.9°C | −3.9°C | 108 mm | 52 cm |
| Year | 12.2°C | 0.1°C | 6.2°C | 1,125 mm | 241 cm |
March has run from −27.8°C to 28.6°C in thirty years
From one year to the next, February’s average typically shifts by 2.7°C around its normal of −6.6°C, the widest of any month, while August’s shifts by 0.9°C.
Where St. Stephen’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at St. Stephen, the closest ECCC location with twelve months of temperature normals.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- 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, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about St. Stephen’s climate
How warm does St. Stephen get in summer?
At its warmest, in July, the normal high is 25.7°C.
How cold does St. Stephen get in winter?
Lows sink to −13.6°C on an average January night.
How much rain and snow does St. Stephen get?
Measured as water, a year brings 1,125 mm: 120 mm in October, the wettest month, and 65 mm in August, the driest.
Are these figures for St. Stephen itself?
Close to it: they are ECCC’s 1991–2020 normals for St. Stephen, just outside St. Stephen’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for St. Stephen →
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).