Stratford climate — normals and trends
Stratford (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.3 °C and it receives 998 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 (20.2 °C on average) and the coldest is January (-6.2 °C). Rainfall peaks in June.
Stratford averages 146 frost days, 6 hot days (≥ 30 °C) and 142 rainy days per year.
Stratford has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 157 to 135 per year over the period.
The hottest day of the period reached 35.7 °C (on 14 July 1995) and the coldest -32.5 °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
StratfordOntario
- coords
- 43.37°, -80.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.3°C
Average daily high
11.9°C
Average daily low
2.6°C
Annual rainfall
998mm
Sunshine / day
8.3h
Mean relative humidity
75%
Average peak wind
19.4km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
146 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
142 d/yr
Annual snowfall
123.8 cm
Average feels-like high
9.5 °C
Average feels-like low
-0.8 °C
Average peak gust
41.0 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
35.7 °C
14 July 1995
Coldest day
-32.5 °C
16 February 2015
Wettest day
71 mm
18 June 1996
Windiest day
52.7 km/h
13 November 2003
Strongest gust
108.0 km/h
10 January 2017
Hottest feels-like
40.7 °C
14 July 1995
Coldest feels-like
-37.3 °C
16 February 2015
Snowiest day
28.0 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 | -4.0 °C | -1.4 °C | 57 mm | -12 mm |
| Feb | -2.8 °C | -1.2 °C | 70 mm | +10 mm |
| Mar | 7.6 °C | +3.7 °C | 103 mm | +28 mm |
| Apr | 12.5 °C | +1.0 °C | 93 mm | +4 mm |
| May | 16.6 °C | -1.4 °C | 81 mm | -13 mm |
| Jun | 24.7 °C | +1.5 °C | 108 mm | +8 mm |
| Jul | 27.0 °C | +1.7 °C | 72 mm | -26 mm |
| Aug | 24.3 °C | 0.0 °C | 64 mm | -24 mm |
| Sep | 22.5 °C | +2.1 °C | 62 mm | -24 mm |
| Oct | 15.6 °C | +1.9 °C | 66 mm | -13 mm |
| Nov | 6.0 °C | -0.4 °C | 73 mm | -10 mm |
| Dec | -0.9 °C | -1.0 °C | 107 mm | +31 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 Stratford?
Stratford has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.3 °C and it receives 998 mm of precipitation per year.
What is the hottest day ever recorded in Stratford?
The hottest day measured in Stratford between 1940 and 2025 was 14 July 1995, reaching 35.7 °C.
What is the coldest day in Stratford?
The coldest day measured in Stratford between 1940 and 2025 was 16 February 2015, at -32.5 °C.
Does it snow in Stratford?
Yes. Stratford gets on average 123.8 cm of snow per year and has around 146 frost days.
Has the climate of Stratford warmed?
Yes: Stratford warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Stratford?
The wettest day measured in Stratford between 1940 and 2025 was 18 June 1996, with 71 mm of rain in 24 hours.
What was the windiest day in Stratford?
The windiest day measured in Stratford between 1940 and 2025 was 13 November 2003, with winds reaching 52.7 km/h.
What is the warmest month in Stratford?
The warmest month in Stratford is July (20.2 °C on average); the coldest is January (-6.2 °C).
How much does it rain in Stratford?
Stratford receives on average 998 mm of precipitation per year, spread over about 142 rainy days.
Is it sunny in Stratford?
Stratford gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Stratford?
The heaviest 24-hour snowfall measured in Stratford between 1940 and 2025 was 25 February 1965, with 28.0 cm.
Are there tropical nights in Stratford?
Yes: Stratford has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Stratford?
In Stratford, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 14 July 1995, and the lowest was -37.3 °C on 16 February 2015.
Compare Stratford with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Stratford