Aurora climate — normals and trends
Aurora (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 839 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 (20.7 °C on average) and the coldest is January (-7.0 °C). Rainfall peaks in June.
Aurora averages 147 frost days, 13 hot days (≥ 30 °C) and 125 rainy days per year.
Aurora has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 140 per year over the period.
The hottest day of the period reached 38.2 °C (on 8 July 1988) and the coldest -34.5 °C (on 10 January 2004).
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
AuroraOntario
- coords
- 44.00°, -79.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.3°C
Average daily high
12.2°C
Average daily low
2.2°C
Annual rainfall
839mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
17.9km/h
Seasonal range
27.7°C
Frost days (< 0 °C)
147 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
109.0 cm
Average feels-like high
9.7 °C
Average feels-like low
-1.0 °C
Average peak gust
38.9 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
38.2 °C
8 July 1988
Coldest day
-34.5 °C
10 January 2004
Wettest day
116 mm
15 October 1954
Windiest day
50.2 km/h
6 April 1979
Strongest gust
107.3 km/h
6 April 1985
Hottest feels-like
40.6 °C
1 August 1975
Coldest feels-like
-40.3 °C
10 January 2004
Snowiest day
27.4 cm
3 April 1975
Sunniest day
15.0 h
16 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 | -3.7 °C | -0.9 °C | 34 mm | -20 mm |
| Feb | -2.8 °C | -1.2 °C | 74 mm | +25 mm |
| Mar | 6.6 °C | +2.7 °C | 73 mm | +11 mm |
| Apr | 11.8 °C | 0.0 °C | 62 mm | -11 mm |
| May | 17.8 °C | -0.9 °C | 88 mm | +6 mm |
| Jun | 25.5 °C | +1.6 °C | 83 mm | -1 mm |
| Jul | 28.3 °C | +2.0 °C | 61 mm | -21 mm |
| Aug | 25.4 °C | +0.3 °C | 62 mm | -17 mm |
| Sep | 22.9 °C | +2.1 °C | 56 mm | -18 mm |
| Oct | 15.5 °C | +1.6 °C | 60 mm | -13 mm |
| Nov | 5.6 °C | -0.8 °C | 50 mm | -19 mm |
| Dec | -0.9 °C | -0.9 °C | 79 mm | +18 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 Aurora?
Aurora has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.3 °C and it receives 839 mm of precipitation per year.
What is the hottest day ever recorded in Aurora?
The hottest day measured in Aurora between 1940 and 2025 was 8 July 1988, reaching 38.2 °C.
What is the coldest day in Aurora?
The coldest day measured in Aurora between 1940 and 2025 was 10 January 2004, at -34.5 °C.
Does it snow in Aurora?
Yes. Aurora gets on average 109.0 cm of snow per year and has around 147 frost days.
Has the climate of Aurora warmed?
Yes: Aurora warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aurora?
The wettest day measured in Aurora between 1940 and 2025 was 15 October 1954, with 116 mm of rain in 24 hours.
What was the windiest day in Aurora?
The windiest day measured in Aurora between 1940 and 2025 was 6 April 1979, with winds reaching 50.2 km/h.
What is the warmest month in Aurora?
The warmest month in Aurora is July (20.7 °C on average); the coldest is January (-7.0 °C).
How much does it rain in Aurora?
Aurora receives on average 839 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Aurora?
Aurora gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aurora?
The heaviest 24-hour snowfall measured in Aurora between 1940 and 2025 was 3 April 1975, with 27.4 cm.
Are there tropical nights in Aurora?
Yes: Aurora has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aurora?
In Aurora, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 1 August 1975, and the lowest was -40.3 °C on 10 January 2004.
Compare Aurora with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aurora