Home / Cornwall / 3 September 2023
Cornwall
United States · 3 September 2023
← 2 September 20234 September 2023 →
Average
25.5°C
low 18.5° · high 32.7°
Rainfall
0mm
dry day
Wind
2.5m/s
daily average
Humidity
64.1%
daily average
Cloud
22%
cover
Pressure
1015hPa
daily average
The temperature ranged from 18.5°C around 05:00 to 32.7°C around 17:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
91th percentile
Low temperature
56th percentile
Rainfall
52th percentile
Wind
56th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 21.9°C, versus 25.5°C on this specific day.
Sun & daylight
Sunrise
06:35
Sunset
19:34
Day length
13h 0m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 21.2 | 22.4 | 0 | 1.8 | SW | 77 | 1018 |
| 01:00 | 05:00 | 21.1 | 22.1 | 0 | 1.8 | SW | 77 | 1017 |
| 02:00 | 06:00 | 20.7 | 21.7 | 0 | 1.6 | SSW | 77 | 1017 |
| 03:00 | 07:00 | 20.1 | 21 | 0 | 1.8 | SSW | 79 | 1017 |
| 04:00 | 08:00 | 19.3 | 20.1 | 0 | 1.9 | SW | 83 | 1017 |
| 05:00 | 09:00 | 18.5 | 19.1 | 0 | 2 | W | 86 | 1017 |
| 06:00 | 10:00 | 19.2 | 20.5 | 0 | 1.3 | W | 84 | 1017 |
| 07:00 | 11:00 | 19.2 | 20.3 | 0 | 1.7 | W | 86 | 1017 |
| 08:00 | 12:00 | 20.4 | 21.7 | 0 | 1.9 | W | 84 | 1017 |
| 09:00 | 13:00 | 22.6 | 24.2 | 0 | 1.8 | WNW | 76 | 1017 |
| 10:00 | 14:00 | 24.7 | 26.2 | 0 | 2.5 | W | 70 | 1017 |
| 11:00 | 15:00 | 28.7 | 30.3 | 0 | 2.7 | WNW | 58 | 1016 |
| 12:00 | 16:00 | 29.9 | 31.4 | 0 | 2.6 | WNW | 53 | 1016 |
| 13:00 | 17:00 | 31 | 31.8 | 0 | 3 | WNW | 47 | 1015 |
| 14:00 | 18:00 | 31.8 | 32 | 0 | 3.5 | WNW | 44 | 1014 |
| 15:00 | 19:00 | 32.2 | 32.1 | 0 | 3.8 | WNW | 42 | 1013 |
| 16:00 | 20:00 | 32.5 | 32.6 | 0 | 3.7 | WNW | 42 | 1013 |
| 17:00 | 21:00 | 32.7 | 32.7 | 0 | 3.6 | WNW | 40 | 1012 |
| 18:00 | 22:00 | 31.4 | 31.8 | 0 | 3 | WNW | 43 | 1013 |
| 19:00 | 23:00 | 30 | 30.9 | 0 | 2.4 | NW | 47 | 1013 |
| 20:00 | 00:00 | 28.3 | 29.4 | 0 | 2.4 | NW | 54 | 1013 |
| 21:00 | 01:00 | 26.9 | 27.9 | 0 | 2.6 | NW | 59 | 1013 |
| 22:00 | 02:00 | 26 | 27 | 0 | 2.8 | NW | 63 | 1013 |
| 23:00 | 03:00 | 24.6 | 25.7 | 0 | 2.9 | NW | 69 | 1013 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
Data 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
- Cornwall — 40.250°, -76.500°, ERA5 grid cell center, 8.4 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 3 September 2023 specifically — not a monthly average. See the Cornwall climate overview for typical conditions.
- 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 Cornwall, United States (40.25°N, 76.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Cornwall, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cornwall, 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 Cornwall, 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.