Photo: David Wilson · CC BY 2.0Petit-Rocher is among the snowiest of Canadian towns: about 337 cm a year
Deep winter brings January lows near −16.0°C. By precipitation alone, it ranks wetter than 82% of Canadian towns. Expect the most rain and snow in October and the least in February. Heating does most of its work from October to May, in months below 10°C on average.
The nearest ECCC normals location to Petit-Rocher is Bathurst, 18 km south, and every figure on this page is its.
A year in Petit-Rocher at a glance
Each month’s typical high and low, in °C.
What stands out about Petit-Rocher’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Petit-Rocher feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
181 frost days and 96 days above 20°C a year
From September to May frost is routine, and in January it comes on almost every night. On about 22 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
Rain and melted snow: about 1,118 mm a year
On about 125 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
337 cm of snow in a typical year
Expect snow from October to May, with about 71 cm in January, the snowiest month. 5th snowiest of 61 towns of 2,500+ in New Brunswick.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Petit-Rocher
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. Over a year, a home here needs more heating than 62% of Canadian towns.
Living with Petit-Rocher’s climate
What the normals mean for a garden, a day outside and the depth of winter.
On average the last spring frost comes around 20 May and the first autumn frost around 26 September: about 127 frost-free days between.
The outdoor season by the averages is Jun, Jul and Aug, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →The normals describe a typical year, not its worst days; the hazards page covers Petit-Rocher’s.
Flood & hazards →ECCC’s normals location: Bathurst
ECCC builds the Bathurst normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 18 km south |
| Station altitude | 59 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −35.6°C |
| Hottest reading, 1991–2020 | 37.4°C |
| Next-nearest location | New Carlisle, 43 km |
How Petit-Rocher 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 New Brunswick.
Nearby towns’ climate
Places around Petit-Rocher whose figures come from another normals location. Distances here run 23–37 km: that is how far the nearest places with figures are from Petit-Rocher.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Petit-Rocher Bathurst | 25.1°C | −16.0°C | 1,118 mm |
| Belledune 23 km · Charlo | 23.8°C 1.3°C cooler | −16.2°C about the same | 1,011 mm |
| New Bandon 32 km · New Carlisle | 22.7°C 2.4°C cooler | −14.2°C 1.8°C milder | 1,095 mm |
Petit-Rocher 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 | −5.2°C | −16.0°C | −10.6°C | 82 mm | 71 cm |
| February | −3.7°C | −15.1°C | −9.5°C | 72 mm | 69 cm |
| March | 1.6°C | −9.3°C | −3.8°C | 87 mm | 68 cm |
| April | 8.2°C | −2.0°C | 3.1°C | 78 mm | 30 cm |
| May | 15.8°C | 3.5°C | 9.7°C | 108 mm | 2 cm |
| June | 21.8°C | 9.2°C | 15.5°C | 99 mm | 0 cm |
| July | 25.1°C | 13.1°C | 19.1°C | 99 mm | 0 cm |
| August | 24.4°C | 12.2°C | 18.3°C | 88 mm | 0 cm |
| September | 19.7°C | 7.3°C | 13.5°C | 88 mm | 0 cm |
| October | 12.0°C | 1.8°C | 6.9°C | 120 mm | 6 cm |
| November | 4.8°C | −3.6°C | 0.6°C | 97 mm | 22 cm |
| December | −1.5°C | −10.6°C | −6.1°C | 100 mm | 68 cm |
| Year | 10.2°C | −0.8°C | 4.7°C | 1,118 mm | 337 cm |
February strays furthest from its normal year to year, by 2.5°C; August the least
March has the widest record range, −33.5°C in 2014 to 24.5°C in 2012; the tick on each bar is the month’s normal.
Where Petit-Rocher’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Bathurst: the nearest of its locations with every month’s temperatures.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest 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 Petit-Rocher’s climate
How warm does Petit-Rocher get in summer?
Expect highs near 25.1°C in July, the hottest month on average.
How cold does Petit-Rocher get in winter?
The year’s coldest nights belong to January, at about −16.0°C.
How much rain and snow does Petit-Rocher get?
Some 1,118 mm falls in a year. Most of it comes in October (120 mm), the least in February (72 mm).
How long does snow stay on the ground?
Snow cover of 1 cm or more lasts about 143 days in a typical year.
Are these figures for Petit-Rocher itself?
No. ECCC measures normals at Bathurst, not in Petit-Rocher; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Petit-Rocher →
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).