Aurora climate — normals and trends
Aurora (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 1,120 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 (21.9 °C on average) and the coldest is January (-3.3 °C). Rainfall peaks in June.
Aurora averages 116 frost days, 17 hot days (≥ 30 °C) and 149 rainy days per year.
Aurora has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 129 to 103 per year over the period.
The hottest day of the period reached 38.0 °C (on 25 June 1988) and the coldest -30.1 °C (on 19 January 1994).
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
AuroraOhio
- coords
- 41.32°, -81.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
14.6°C
Average daily low
5.2°C
Annual rainfall
1,120mm
Sunshine / day
8.5h
Mean relative humidity
73%
Average peak wind
16.4km/h
Seasonal range
25.2°C
Frost days (< 0 °C)
116 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
149 d/yr
Annual snowfall
97.7 cm
Average feels-like high
12.9 °C
Average feels-like low
2.5 °C
Average peak gust
37.3 km/h
Tropical nights (≥ 20 °C)
14 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
38.0 °C
25 June 1988
Coldest day
-30.1 °C
19 January 1994
Wettest day
118 mm
14 September 1979
Windiest day
45.2 km/h
16 April 2007
Strongest gust
113.8 km/h
16 February 1967
Hottest feels-like
42.6 °C
15 July 1995
Coldest feels-like
-36.1 °C
19 January 1994
Snowiest day
28.4 cm
25 November 1950
Sunniest day
15.0 h
27 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 | -2.2 °C | -2.8 °C | 50 mm | -31 mm |
| Feb | 1.6 °C | -0.8 °C | 95 mm | +22 mm |
| Mar | 12.7 °C | +4.8 °C | 70 mm | -29 mm |
| Apr | 16.4 °C | +1.7 °C | 145 mm | +34 mm |
| May | 19.1 °C | -1.2 °C | 165 mm | +53 mm |
| Jun | 26.8 °C | +1.7 °C | 153 mm | +40 mm |
| Jul | 28.5 °C | +1.3 °C | 105 mm | +1 mm |
| Aug | 26.0 °C | -0.2 °C | 26 mm | -66 mm |
| Sep | 25.4 °C | +2.8 °C | 48 mm | -38 mm |
| Oct | 17.6 °C | +1.3 °C | 104 mm | +27 mm |
| Nov | 8.5 °C | -0.6 °C | 62 mm | -26 mm |
| Dec | 2.4 °C | -0.5 °C | 81 mm | -4 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 9.7 °C and it receives 1,120 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 25 June 1988, reaching 38.0 °C.
What is the coldest day in Aurora?
The coldest day measured in Aurora between 1940 and 2025 was 19 January 1994, at -30.1 °C.
Does it snow in Aurora?
Yes. Aurora gets on average 97.7 cm of snow per year and has around 116 frost days.
Has the climate of Aurora warmed?
Yes: Aurora warmed by +1.9 °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 14 September 1979, with 118 mm of rain in 24 hours.
What was the windiest day in Aurora?
The windiest day measured in Aurora between 1940 and 2025 was 16 April 2007, with winds reaching 45.2 km/h.
What is the warmest month in Aurora?
The warmest month in Aurora is July (21.9 °C on average); the coldest is January (-3.3 °C).
How much does it rain in Aurora?
Aurora receives on average 1,120 mm of precipitation per year, spread over about 149 rainy days.
Is it sunny in Aurora?
Aurora gets on average 8.5 hours of sunshine per day, roughly 3,103 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 25 November 1950, with 28.4 cm.
Are there tropical nights in Aurora?
Yes: Aurora has on average 14 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 42.6 °C on 15 July 1995, and the lowest was -36.1 °C on 19 January 1994.
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