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Aurora climate
Typical historical weather for Aurora, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Aurora. Planning a garden? See the gardening & growing season planner. Or browse the 365-day climate calendar.
Annual average
13.4°C
across all months
Warmest month
29.6°C
Jul average high
Coolest month
-3.3°C
Jan average low
Annual rainfall
1267mm
total per year
Aurora is typically hottest in July and coolest in January, a swing of about 32.9°C across the year. About 30% of annual rainfall falls in the three wettest months (July is typically wettest, September driest).
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
| Month | Avg high | Avg low | Rainfall | Wet days | Humidity | Wind | Cloud | Solar |
|---|---|---|---|---|---|---|---|---|
| Jan | 4°C · record 12.1–20°C | -3.3°C · record -20.9–-5.3°C | 92mm | 11 | 72% | 3.4 m/s | 70% | 2 kWh/m² |
| Feb | 8.1°C · record 16.6–25.5°C | -1°C · record -15.9–-8.7°C | 117mm | 11 | 68% | 3.4 m/s | 68% | 2.9 kWh/m² |
| Mar | 13.3°C · record 16.1–26.9°C | 3.2°C · record -12.9–-3°C | 125mm | 12 | 62% | 3.6 m/s | 64% | 4 kWh/m² |
| Apr | 18.2°C · record 26.2–29.2°C | 7.8°C · record -3–1.1°C | 122mm | 13 | 63% | 3.4 m/s | 64% | 5.1 kWh/m² |
| May | 23.4°C · record 29.1–32.8°C | 13.9°C · record -0.2–9.2°C | 126mm | 15 | 70% | 2.9 m/s | 66% | 5.5 kWh/m² |
| Jun | 28.2°C · record 31.6–34.6°C | 18.6°C · record 8–13.8°C | 118mm | 12 | 68% | 2.6 m/s | 56% | 6.3 kWh/m² |
| Jul | 29.6°C · record 32.6–34.6°C | 20.8°C · record 13.8–19.6°C | 135mm | 14 | 73% | 2.2 m/s | 56% | 6.2 kWh/m² |
| Aug | 28.7°C · record 32.4–35°C | 19.3°C · record 10–15.1°C | 98mm | 11 | 74% | 2.2 m/s | 53% | 5.6 kWh/m² |
| Sep | 26.6°C · record 31–34.6°C | 15.9°C · record 6.2–11.7°C | 78mm | 8 | 71% | 2.4 m/s | 45% | 4.7 kWh/m² |
| Oct | 20.2°C · record 24.9–34.2°C | 9.6°C · record -2.3–4.8°C | 78mm | 9 | 70% | 2.9 m/s | 50% | 3.4 kWh/m² |
| Nov | 12.2°C · record 16.4–27.2°C | 2.9°C · record -11.7–-2.3°C | 85mm | 9 | 69% | 3.2 m/s | 57% | 2.4 kWh/m² |
| Dec | 7.2°C · record 15.7–20.2°C | -0.4°C · record -22.6–-5°C | 95mm | 11 | 73% | 3.2 m/s | 69% | 1.8 kWh/m² |
"Avg high"/"Avg low" is the mean daily high/low for that month, averaged across every year on file. The "record" figure alongside it is a different statistic — the single hottest (or coldest) hour ever recorded during that month across all years — so it can sit above or below the average and does not describe the average's year-to-year spread. A "wet day" is any day with at least 1.0mm of rain.
Year to year
Annual average temperature, 2016–2025.
Across these 10 years, the annual average has moved by about +0.07°C per decade. That’s a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
Annual rainfall has moved by about -140.13mm per decade over the same period.
2025 (the most recent year on file) averaged 13.054112060755921°C, below the 9-year baseline of 13.53°C by 1.36 standard deviations.
Typical extremes per year
Rainy days
135.7 days
≥1.0mm rain
Heavy rain days
14.3 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
74.1 days
daily low ≤0°C
Averaged across 10 years on file. Thresholds match PastClimate's data pipeline definitions — see data & sources.
Records on file
Ranked across 10 years of data currently on file (2016–2025).
Hottest day
35°C
30 August 2024
2024 was 2.1 SD above the 9-year average that year
Coldest day
-22.6°C
23 December 2022
2022 was 1.46 SD below the 9-year average that year
Wettest day
67.4mm
1 November 2018
2018 was 1.23 SD below the 9-year average that year
Windiest day
8.2m/s
24 February 2019
2019 was 0.32 SD below the 9-year average that year
See the detail: Aurora on 1 November 2018.
Nearby cities
Florence
21.6 km away
Burlington
21.6 km away
Oakbrook
21.6 km away
Francisville
21.6 km away
Hebron
21.6 km away
Union
21.6 km away
Want a side-by-side view instead? Compare Aurora with another city.
Frequently asked questions about Aurora's climate
What is the hottest month in Aurora?
July is typically the warmest month in Aurora, with an average high of 29.6°C. January is typically the coolest, averaging -3.3°C overnight.
How much does it rain in Aurora?
Aurora gets about 1267mm of rain a year on average, with roughly 30% of it falling in the three wettest months (July is typically the wettest, September the driest).
How many extremely hot or cold days does Aurora have?
On average, Aurora sees about 0 day(s) a year at or above 40°C and about 74.1 day(s) at or below 0°C, based on 10 years of data.
Is Aurora getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.07°C per decade. That's a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
What is the hottest day on record for Aurora?
The hottest day on file is 30 August 2024 at 35°C, out of 10 year(s) searched.
Data & provenance
↓ Download monthly CSVData source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Aurora — 39.000°, -85.000°, ERA5 grid cell center, 10.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- Monthly and annual averages, and dated extreme-value records, derived from an hourly base record.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-18). Historical climate data for Aurora, United States (39.00°N, 85.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Aurora, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Aurora, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Aurora, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.