Home / Cornwall / 1 September 2019
Cornwall
United States · 1 September 2019
← 31 August 20192 September 2019 →
Average
22°C
low 18.3° · high 27.6°
Rainfall
1.4mm
rain recorded
Wind
2.3m/s
daily average
Humidity
55.7%
daily average
Cloud
94%
cover
Pressure
1025hPa
daily average
The temperature ranged from 18.3°C around 05:00 to 27.6°C around 17:00. Rain was recorded across 3 hours, from around 15:00 to 17:00 (1.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
49th percentile
Low temperature
47th percentile
Rainfall
71th percentile
Wind
53th 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 22.6°C, versus 22°C on this specific day.
Sun & daylight
Sunrise
06:33
Sunset
19:38
Day length
13h 5m
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 | 20.8 | 18.1 | 0 | 3 | ENE | 43 | 1025 |
| 01:00 | 05:00 | 20.1 | 17.5 | 0 | 3 | ENE | 45 | 1026 |
| 02:00 | 06:00 | 19.5 | 17 | 0 | 2.8 | ENE | 47 | 1026 |
| 03:00 | 07:00 | 19 | 16.6 | 0 | 2.7 | ENE | 48 | 1026 |
| 04:00 | 08:00 | 18.8 | 16.4 | 0 | 2.8 | ENE | 49 | 1026 |
| 05:00 | 09:00 | 18.3 | 15.9 | 0 | 2.7 | E | 51 | 1026 |
| 06:00 | 10:00 | 18.5 | 16.5 | 0 | 2.3 | E | 52 | 1026 |
| 07:00 | 11:00 | 18.6 | 16.6 | 0 | 2.5 | ENE | 53 | 1026 |
| 08:00 | 12:00 | 18.9 | 17.3 | 0 | 2.6 | E | 58 | 1026 |
| 09:00 | 13:00 | 19.3 | 18.2 | 0 | 2.6 | E | 64 | 1026 |
| 10:00 | 14:00 | 20.3 | 19.6 | 0 | 2.3 | ESE | 64 | 1027 |
| 11:00 | 15:00 | 22.8 | 21.6 | 0 | 2.4 | ESE | 49 | 1026 |
| 12:00 | 16:00 | 23.6 | 22.6 | 0 | 2.3 | SE | 49 | 1027 |
| 13:00 | 17:00 | 24.8 | 24 | 0 | 2.5 | SE | 48 | 1026 |
| 14:00 | 18:00 | 25.3 | 24.8 | 0.04 | 2.4 | SSE | 48 | 1025 |
| 15:00 | 19:00 | 25.8 | 25.5 | 0.48 | 2.3 | S | 48 | 1025 |
| 16:00 | 20:00 | 26.6 | 26.8 | 0.26 | 1.9 | SSW | 48 | 1024 |
| 17:00 | 21:00 | 27.6 | 28.4 | 0.54 | 1.5 | SSW | 49 | 1023 |
| 18:00 | 22:00 | 24.1 | 26.7 | 0.02 | 0.4 | WNW | 70 | 1023 |
| 19:00 | 23:00 | 23.9 | 25.9 | 0.01 | 0.9 | E | 69 | 1023 |
| 20:00 | 00:00 | 23.2 | 24.6 | 0.01 | 1.5 | ESE | 69 | 1023 |
| 21:00 | 01:00 | 22.9 | 23.8 | 0 | 2 | ESE | 68 | 1023 |
| 22:00 | 02:00 | 22.8 | 23 | 0 | 3.1 | SE | 69 | 1023 |
| 23:00 | 03:00 | 22 | 22.3 | 0 | 3.6 | SSE | 78 | 1022 |
Nearby cities
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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 1 September 2019 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.