Photo: Chris Woodrich · CC BY-SA 4.0Summer afternoons in Strathroy are warmer than in 91% of Canadian towns
The depth of winter brings overnight lows near −8.5°C. The wettest month is November; the driest is February. Winters are mild: January nights here are milder than in 81% of Canadian towns. For walks and days out, May, June, August and September bring highs of 20–26°C.
Environment and Climate Change Canada’s 1991–2020 normals at its Strathroy-Mullifarry station, 5.5 km west.
A year in Strathroy at a glance
Each month’s typical high and low, in °C.
What stands out about Strathroy’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Strathroy feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 137 frosts and 131 warm days a year
From October to May frost is routine, and in January it comes on almost every night. Heat of 30°C or more comes on about 17 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
966 mm of precipitation in a typical year
About 132 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
152 cm of snow in a typical 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 Strathroy
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. That means homes here need less heating than 86% of Canadian towns.
Living with Strathroy’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Wait until about 8 May to plant out; frost tends to come back around 11 October, about 155 days later.
The outdoor season by the averages is May, Jun, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →For the weather that does damage, from ice storms to floods, see Strathroy’s hazards page.
Flood & hazards →ECCC’s normals location: Strathroy-Mullifarry
Behind the 1991–2020 normals for Strathroy-Mullifarry are 2 stations, which ECCC combines into one record.
| Distance from the town | 5.5 km west |
| 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 | London, 36 km |
How Strathroy 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 Ontario.
Nearby towns’ climate
Places around Strathroy whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Strathroy Strathroy-Mullifarry | 27.3°C | −8.5°C | 966 mm |
| Adelaide-Metcalfe 5.6 km · Strathroy-Mullifarry | 27.3°C about the same | −8.5°C about the same | 966 mm |
| Middlesex Centre 17 km · London | 26.6°C 0.7°C cooler | −9.1°C 0.6°C colder | 962 mm |
Strathroy weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 |
February strays furthest from its normal year to year, by 3.2°C; June the least
Bars run from each month’s record low to its record high since 1991. March spans the most, from −28.0°C (2015) to 27.5°C (2012).
Where Strathroy’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Strathroy-Mullifarry, the closest ECCC location with twelve months of temperature normals.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- 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 Strathroy’s climate
How warm does Strathroy get in summer?
The year’s warmest days come in July, with highs averaging 27.3°C.
How cold does Strathroy get in winter?
Expect nights around −8.5°C in January; no month is colder.
How much rain and snow does Strathroy get?
Count on roughly 966 mm a year, heaviest in November (90 mm) and lightest in February (62 mm).
How long does snow stay on the ground?
Snow lies on the ground for about 80 days in a normal year.
Are these figures for Strathroy itself?
They are the normals for Strathroy-Mullifarry, measured just outside Strathroy itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Strathroy →
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).