Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainA middle-of-the-road climate: Dundas is close to most Canadian towns on every count
July afternoons reach 25.1°C on a typical day and January nights drop to −13.2°C; 1,002 mm of rain and melted snow falls in a year. Precipitation is plentiful here, more than falls on 68% of Canadian towns. A year here swings 38°C from midwinter lows to midsummer highs. Heating does most of its work from October to April, in months below 10°C on average.
The nearest ECCC normals location to Dundas is Bouctouche, 19 km north-west, and every figure on this page is its.
A year in Dundas at a glance
Each month’s typical high and low, in °C.
What stands out about Dundas’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Dundas feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 166 frosts and 99 warm days a year
The frost season runs October to May, and January freezes nearly every night. On about 13 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 1,002 mm of rain and snow a year
The most falls in October, the least in February. 53rd wettest of 60 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
Snowfall: about 310 cm in a normal year
From October to May snow is likely; January is the peak, at about 74 cm.
Snowfall by month
Centimetres
ECCC’s Bouctouche normals leave snowfall out; the figures here come from Moncton, 24 km away.
Heating a home in Dundas
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The total grows by a degree for every degree a day’s mean sits under 18°C.
Living with Dundas’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Wait until about 14 May to plant out; frost tends to come back around 3 October, about 141 days later.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul, Aug and Sep.
Parks & trails →What averages leave out, the floods and ice storms, is on Dundas’s hazards page.
Flood & hazards →ECCC’s normals location: Bouctouche
ECCC builds the Bouctouche normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 19 km north-west |
| Station altitude | 36 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Moncton, 24 km |
| Coldest reading, 1991–2020 | −31.0°C |
| Hottest reading, 1991–2020 | 36.0°C |
| Next-nearest location | Moncton, 24 km |
How Dundas 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 Dundas’s own would show the same figures).
Dundas weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −3.4°C | −13.2°C | −8.3°C | 72 mm | 74 cm |
| February | −2.3°C | −12.7°C | −7.5°C | 59 mm | 65 cm |
| March | 2.0°C | −7.5°C | −2.8°C | 79 mm | 60 cm |
| April | 8.3°C | −1.3°C | 3.5°C | 69 mm | 29 cm |
| May | 15.7°C | 4.5°C | 10.2°C | 93 mm | 2 cm |
| June | 21.3°C | 10.2°C | 15.8°C | 82 mm | 0 cm |
| July | 25.1°C | 14.2°C | 19.7°C | 89 mm | 0 cm |
| August | 24.6°C | 13.4°C | 19.1°C | 74 mm | 0 cm |
| September | 20.2°C | 9.1°C | 14.7°C | 101 mm | 0 cm |
| October | 13.1°C | 3.4°C | 8.3°C | 106 mm | 2 cm |
| November | 6.3°C | −2.0°C | 2.2°C | 92 mm | 19 cm |
| December | 0.0°C | −8.3°C | −4.1°C | 86 mm | 59 cm |
| Year | 10.9°C | 0.8°C | 5.9°C | 1,002 mm | 310 cm |
From −27.0°C to 26.0°C: March’s coldest and warmest days since 1991
Year to year, February varies most (a standard deviation of 2.5°C around −7.5°C) and August least (0.9°C).
Where Dundas’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Bouctouche, 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: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- 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 Dundas’s climate
How warm does Dundas get in summer?
A normal July afternoon tops out at about 25.1°C, the year’s high point.
How cold does Dundas get in winter?
Deep winter means January, when nights average −13.2°C.
How much rain and snow does Dundas get?
Around 1,002 mm a year in all, from 106 mm in October down to 59 mm in February.
Are these figures for Dundas itself?
Not directly: Dundas has no ECCC normals of its own, and Bouctouche stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Dundas →
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).