Photo: Jennifer Aitkens from Guelph, Ontario, Canada · CC BY 2.0Summer arrives in force in Brooke-Alvinston, hotter than in 91% of Canadian towns
In January the night’s low is typically −8.5°C. Expect the most rain and snow in November and the least in February. Winters are mild: January nights here are milder than in 81% of Canadian towns. The furnace earns its keep from November to April, the months that average under 10°C.
ECCC publishes no normals for Brooke-Alvinston itself; the figures are those of Strathroy-Mullifarry, 23 km north-east.
A year in Brooke-Alvinston at a glance
Each month’s typical high and low, in °C.
What stands out about Brooke-Alvinston’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Brooke-Alvinston feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 137 days, 20°C on 131
From October to May frost is routine, and in January it comes on almost every night. About 17 days a year top 30°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 966 mm a year
Some 132 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 152 cm of snow a year
The snow season runs October to April; January brings the most, about 43 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Brooke-Alvinston
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. A house here needs less heating than 86% of Canadian towns.
Living with Brooke-Alvinston’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The growing season between frosts lasts about 155 days, roughly 8 May to 11 October.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →A typical year is calm by definition; Brooke-Alvinston’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Strathroy-Mullifarry
ECCC builds the Strathroy-Mullifarry normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 23 km north-east |
| Station altitude | 229 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −32.5°C |
| Hottest reading, 1991–2020 | 37.5°C |
| Next-nearest location | New Glasgow, 40 km |
How Brooke-Alvinston compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Brooke-Alvinston’s own would show the same figures). No closer places have figures: these lie 19–28 km from Brooke-Alvinston.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Brooke-Alvinston Strathroy-Mullifarry | 27.3°C | −8.5°C | 966 mm |
| Dawn-Euphemia 19 km · Ridgetown | 27.2°C about the same | −8.2°C about the same | 903 mm |
| Petrolia 23 km · Sarnia | 26.5°C 0.8°C cooler | −8.2°C about the same | 871 mm |
Brooke-Alvinston 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 | −1.5°C | −8.5°C | −5.0°C | 81 mm | 43 cm |
| February | −0.4°C | −8.3°C | −4.4°C | 62 mm | 32 cm |
| March | 5.1°C | −3.8°C | 0.7°C | 66 mm | 20 cm |
| April | 12.7°C | 2.1°C | 7.4°C | 88 mm | 5 cm |
| May | 19.9°C | 8.2°C | 14.1°C | 84 mm | under 1 cm |
| June | 25.0°C | 13.5°C | 19.3°C | 86 mm | 0 cm |
| July | 27.3°C | 15.7°C | 21.5°C | 78 mm | 0 cm |
| August | 26.2°C | 14.8°C | 20.5°C | 81 mm | 0 cm |
| September | 22.8°C | 11.1°C | 17.0°C | 88 mm | 0 cm |
| October | 15.3°C | 5.8°C | 10.6°C | 84 mm | 2 cm |
| November | 7.8°C | 0.4°C | 4.1°C | 90 mm | 13 cm |
| December | 1.5°C | −4.7°C | −1.6°C | 79 mm | 37 cm |
| Year | 13.5°C | 3.9°C | 8.7°C | 966 mm | 152 cm |
A February here can run warm or cold, its average moving by about 3.2°C; the steadiest month is June
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −28.0°C in 2015 to 27.5°C in 2012.
Where Brooke-Alvinston’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Strathroy-Mullifarry, the nearest location with a full year of temperatures.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Brooke-Alvinston’s climate
How warm does Brooke-Alvinston get in summer?
The year’s warmest days come in July, with highs averaging 27.3°C.
How cold does Brooke-Alvinston get in winter?
In January, the coldest month, the typical low is −8.5°C.
How much rain and snow does Brooke-Alvinston get?
About 966 mm a year, rain and melted snow together. November is the wettest month (90 mm) and February the driest (62 mm).
How long does snow stay on the ground?
Count on about 80 days of snow cover a year, 1 cm or deeper.
Are these figures for Brooke-Alvinston itself?
They describe Strathroy-Mullifarry, the nearest normals location, rather than Brooke-Alvinston itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Brooke-Alvinston →
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).