Strathroy climate — normals and trends
Strathroy (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.1 °C and it receives 981 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.0 °C on average) and the coldest is January (-5.4 °C). Rainfall peaks in July.
Strathroy averages 136 frost days, 10 hot days (≥ 30 °C) and 139 rainy days per year.
Strathroy has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 149 to 123 per year over the period.
The hottest day of the period reached 37.4 °C (on 25 June 1988) and the coldest -31.5 °C (on 16 February 2015).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
StrathroyOntario
- coords
- 42.96°, -81.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.1°C
Average daily high
12.7°C
Average daily low
3.4°C
Annual rainfall
981mm
Sunshine / day
8.8h
Mean relative humidity
74%
Average peak wind
18.5km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
136 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
106.2 cm
Average feels-like high
10.6 °C
Average feels-like low
0.3 °C
Average peak gust
39.4 km/h
Tropical nights (≥ 20 °C)
9 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.34 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
37.4 °C
25 June 1988
Coldest day
-31.5 °C
16 February 2015
Wettest day
71 mm
22 September 2021
Windiest day
50.8 km/h
15 March 1959
Strongest gust
106.2 km/h
10 January 2017
Hottest feels-like
43.1 °C
14 July 1995
Coldest feels-like
-36.4 °C
16 February 2015
Snowiest day
27.7 cm
25 February 1965
Sunniest day
15.0 h
14 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -3.2 °C | -1.4 °C | 49 mm | -16 mm |
| Feb | -1.9 °C | -1.2 °C | 62 mm | +4 mm |
| Mar | 9.0 °C | +4.1 °C | 101 mm | +27 mm |
| Apr | 13.4 °C | +1.1 °C | 90 mm | +1 mm |
| May | 17.1 °C | -1.7 °C | 79 mm | -14 mm |
| Jun | 25.9 °C | +1.9 °C | 99 mm | -0 mm |
| Jul | 27.6 °C | +1.5 °C | 105 mm | +5 mm |
| Aug | 25.0 °C | -0.1 °C | 53 mm | -38 mm |
| Sep | 23.5 °C | +2.3 °C | 53 mm | -30 mm |
| Oct | 16.6 °C | +2.0 °C | 69 mm | -9 mm |
| Nov | 7.0 °C | -0.3 °C | 60 mm | -19 mm |
| Dec | 0.1 °C | -0.8 °C | 102 mm | +30 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Strathroy?
Strathroy has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.1 °C and it receives 981 mm of precipitation per year.
What is the hottest day ever recorded in Strathroy?
The hottest day measured in Strathroy between 1940 and 2025 was 25 June 1988, reaching 37.4 °C.
What is the coldest day in Strathroy?
The coldest day measured in Strathroy between 1940 and 2025 was 16 February 2015, at -31.5 °C.
Does it snow in Strathroy?
Yes. Strathroy gets on average 106.2 cm of snow per year and has around 136 frost days.
Has the climate of Strathroy warmed?
Yes: Strathroy warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Strathroy?
The wettest day measured in Strathroy between 1940 and 2025 was 22 September 2021, with 71 mm of rain in 24 hours.
What was the windiest day in Strathroy?
The windiest day measured in Strathroy between 1940 and 2025 was 15 March 1959, with winds reaching 50.8 km/h.
What is the warmest month in Strathroy?
The warmest month in Strathroy is July (21.0 °C on average); the coldest is January (-5.4 °C).
How much does it rain in Strathroy?
Strathroy receives on average 981 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Strathroy?
Strathroy gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Strathroy?
The heaviest 24-hour snowfall measured in Strathroy between 1940 and 2025 was 25 February 1965, with 27.7 cm.
Are there tropical nights in Strathroy?
Yes: Strathroy has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Strathroy?
In Strathroy, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 14 July 1995, and the lowest was -36.4 °C on 16 February 2015.
Compare Strathroy with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Strathroy