January in Rockwood bites harder than in 95% of Canadian towns
On a normal July day the thermometer tops out near 25.8°C. Rain and snow together come to less here than on 72% of Canadian towns. A year here swings 47°C from midwinter lows to midsummer highs. Wet days, with 1 mm of rain or snow or more, come about 80 times a year.
Read at Winnipeg Richardson (Airport), 8.1 km north-west: ECCC’s normals for 1991–2020.
A year in Rockwood at a glance
Each month’s typical high and low, in °C.
What stands out about Rockwood’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in Rockwood feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 193 frosts and 110 warm days a year
From September to May frost is routine, and in January it comes on almost every night. On about 52 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
519 mm of precipitation in a typical year
The most falls in July, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 126 cm of snow a year
The snow season runs October to May; December brings the most, about 27 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Rockwood
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. A house here needs more heating than 89% of Canadian towns.
Living with Rockwood’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 23 May and the first autumn frost around 22 September: about 122 frost-free days between.
Plan time outside for Jun, Jul and Aug: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 86 days a year.
Roughly 37 days a year feel hotter than 30 once humidity is counted.
For blizzards, floods and wildfire, turn to Rockwood’s hazards page.
Flood & hazards →ECCC’s normals location: Winnipeg Richardson (Airport)
ECCC builds the Winnipeg Richardson (Airport) normals from 4 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 8.1 km north-west |
| Station altitude | 239 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.8°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 17.5 km/h on average, most often from the south |
| Next-nearest location | Portage Southport, 79 km |
How Rockwood compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Manitoba.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Rockwood’s own would show the same figures). The nearest places to Rockwood with figures are 44–48 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Rockwood Winnipeg Richardson (Airport) | 25.8°C | −21.2°C | 519 mm |
| Cartier 44 km · Portage Southport | 25.4°C about the same | −19.1°C 2.1°C milder | 493 mm |
| Brokenhead 44 km · Pinawa | 25.2°C 0.6°C cooler | −21.7°C 0.5°C colder | 571 mm |
| St-Pierre-Jolys 48 km · Emerson | 26.0°C about the same | −20.4°C 0.8°C milder | 543 mm |
Rockwood 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 | −11.4°C | −21.2°C | −16.3°C | 18 mm | 25 cm |
| February | −8.8°C | −19.3°C | −14.1°C | 13 mm | 12 cm |
| March | −0.9°C | −11.2°C | −6.1°C | 26 mm | 19 cm |
| April | 10.0°C | −2.5°C | 3.8°C | 33 mm | 14 cm |
| May | 18.1°C | 4.2°C | 11.1°C | 70 mm | 4 cm |
| June | 23.3°C | 10.9°C | 17.1°C | 74 mm | 0 cm |
| July | 25.8°C | 13.2°C | 19.5°C | 77 mm | 0 cm |
| August | 25.4°C | 11.9°C | 18.7°C | 74 mm | 0 cm |
| September | 19.6°C | 6.9°C | 13.3°C | 53 mm | 0 cm |
| October | 10.4°C | −0.2°C | 5.1°C | 38 mm | 4 cm |
| November | 0.1°C | −8.8°C | −4.4°C | 25 mm | 21 cm |
| December | −8.2°C | −17.3°C | −12.7°C | 19 mm | 27 cm |
| Year | 8.6°C | −2.8°C | 2.9°C | 519 mm | 126 cm |
December strays furthest from its normal year to year, by 4.1°C; July the least
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −37.4°C in 2003 to 23.7°C in 2012.
Where Rockwood’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Winnipeg Richardson (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- 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 Rockwood’s climate
How warm does Rockwood get in summer?
Midsummer means July, with afternoons near 25.8°C on a typical day.
How cold does Rockwood get in winter?
Lows sink to −21.2°C on an average January night.
How much rain and snow does Rockwood get?
519 mm a year counting snow as water. The wettest month is July (77 mm); the driest, February (13 mm).
Are these figures for Rockwood itself?
Close to it: they are ECCC’s 1991–2020 normals for Winnipeg Richardson (Airport), just outside Rockwood’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Rockwood →
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).