Wet weather: 1,271 mm of rain and snow a year falls on Saint Martins, more than on 92% of Canadian towns
Midsummer highs settle at about 23.0°C. By July afternoons alone, it runs cooler than 90% of Canadian towns. A year here swings 36°C from midwinter lows to midsummer highs. Warm coats and heating bills mark the months from October to May, when means dip under 10°C.
These are not Saint Martins’s own readings: ECCC keeps no normals there, so the page uses Saint John, 20 km west.
A year in Saint Martins at a glance
Each month’s typical high and low, in °C.
What stands out about Saint Martins’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Saint Martins feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 170 frosts and 80 warm days a year
The frost season runs September to May, and January freezes nearly every night. Deep cold, under −20°C, comes on about 13 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,271 mm of precipitation in a typical year
November brings the most rain and snow; August, the least. The wettest of 61 towns of 2,500+ in New Brunswick. Some 120 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
215 cm of snow in a typical year
Expect snow from November to April, with about 60 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint Martins
87% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C.
Living with Saint Martins’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Frost usually lets go around 21 May and returns near 27 September, about 128 days apart.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul and Aug.
Parks & trails →Wind chill falls below −20 on about 37 days a year: cover skin and dress in layers.
Count on some 12 humid days a year with the humidex past 30.
Thirty years of averages say little about one bad storm; Saint Martins’s hazards page does.
Flood & hazards →ECCC’s normals location: Saint John
Behind the 1991–2020 normals for Saint John are 2 stations, which ECCC combines into one record.
| Distance from the town | 20 km west |
| Station altitude | 109 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −33.2°C |
| Hottest reading, 1991–2020 | 33.7°C |
| Average wind | 15.3 km/h on average, most often from the north |
| Next-nearest location | Sussex/Four Corners, 39 km |
How Saint Martins 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
Places around Saint Martins whose figures come from another normals location. Saint Martins has no close neighbour with figures; the nearest is 21 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint Martins Saint John | 23.0°C | −13.2°C | 1,271 mm |
| Norton 21 km · Sussex/Four Corners | 25.7°C 2.7°C warmer | −13.2°C about the same | 1,152 mm |
Saint Martins 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 | −2.5°C | −13.2°C | −7.9°C | 116 mm | 60 cm |
| February | −1.6°C | −12.6°C | −7.1°C | 92 mm | 46 cm |
| March | 2.6°C | −7.7°C | −2.6°C | 107 mm | 37 cm |
| April | 8.8°C | −1.6°C | 3.7°C | 100 mm | 16 cm |
| May | 15.3°C | 3.5°C | 9.4°C | 94 mm | 1 cm |
| June | 20.0°C | 8.1°C | 14.1°C | 87 mm | 0 cm |
| July | 23.0°C | 11.6°C | 17.3°C | 90 mm | 0 cm |
| August | 23.0°C | 11.2°C | 17.1°C | 73 mm | 0 cm |
| September | 18.8°C | 7.4°C | 13.1°C | 109 mm | 0 cm |
| October | 13.0°C | 2.6°C | 7.9°C | 138 mm | 1 cm |
| November | 6.9°C | −2.0°C | 2.4°C | 138 mm | 13 cm |
| December | 1.3°C | −8.3°C | −3.5°C | 128 mm | 42 cm |
| Year | 10.7°C | −0.1°C | 5.3°C | 1,271 mm | 215 cm |
March has run from −28.4°C to 25.4°C in thirty years
Year to year, January varies most (a standard deviation of 2.5°C around −7.9°C) and August least (0.7°C).
Where Saint Martins’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Saint John, the nearest location with a full year of temperatures.
- 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 (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 Martins’s climate
How warm does Saint Martins get in summer?
July is the warmest month, with average highs of 23.0°C.
How cold does Saint Martins get in winter?
Overnight lows average −13.2°C in January, the coldest month.
How much rain and snow does Saint Martins get?
The yearly total is about 1,271 mm. November gets 138 mm, the most of any month; August gets 73 mm, the least.
Are these figures for Saint Martins itself?
Not directly: Saint Martins has no ECCC normals of its own, and Saint John stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint Martins →
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).