Home / Key Biscayne / 10 September 2025
Key Biscayne
United States · 10 September 2025
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Average
26.8°C
low 25.2° · high 29°
Rainfall
28.2mm
rain recorded
Wind
2.5m/s
daily average
Humidity
87%
daily average
Cloud
100%
cover
Pressure
1015hPa
daily average
The temperature ranged from 25.2°C around 07:00 to 29°C around 12:00. Rain was recorded across 17 hours, from around 00:00 to 18:00 (28.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
14th percentile
Low temperature
6th percentile
Rainfall
98th percentile
Wind
45th 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 28.1°C, versus 26.8°C on this specific day.
Sun & daylight
Sunrise
07:05
Sunset
19:30
Day length
12h 25m
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 | 26.4 | 30.3 | 1.57 | 3.1 | S | 89 | 1015 |
| 01:00 | 05:00 | 26 | 29.4 | 0.91 | 3.5 | SSW | 90 | 1015 |
| 02:00 | 06:00 | 25.9 | 29.3 | 0 | 3.6 | SSW | 90 | 1015 |
| 03:00 | 07:00 | 25.9 | 29.4 | 0.38 | 3.4 | SSW | 90 | 1014 |
| 04:00 | 08:00 | 25.8 | 29.4 | 1.07 | 3.3 | SSW | 90 | 1014 |
| 05:00 | 09:00 | 25.8 | 29.4 | 0.43 | 3.2 | SW | 90 | 1014 |
| 06:00 | 10:00 | 25.3 | 30.7 | 3.19 | 0.6 | ESE | 93 | 1015 |
| 07:00 | 11:00 | 25.2 | 29.6 | 2.6 | 1.8 | S | 92 | 1015 |
| 08:00 | 12:00 | 25.6 | 29.5 | 0.1 | 2.8 | SSW | 91 | 1016 |
| 09:00 | 13:00 | 26.5 | 30.5 | 0 | 2.8 | SSW | 88 | 1016 |
| 10:00 | 14:00 | 27.7 | 32.3 | 0.14 | 2.5 | SSW | 84 | 1016 |
| 11:00 | 15:00 | 28.6 | 33 | 0.11 | 2.8 | SSW | 81 | 1016 |
| 12:00 | 16:00 | 29 | 33.2 | 0.35 | 3.4 | SW | 80 | 1016 |
| 13:00 | 17:00 | 28.9 | 32.7 | 0.59 | 3.4 | SW | 78 | 1016 |
| 14:00 | 18:00 | 28.1 | 31.7 | 1.33 | 3.3 | SW | 79 | 1016 |
| 15:00 | 19:00 | 27.1 | 30.8 | 7 | 3.1 | SW | 83 | 1016 |
| 16:00 | 20:00 | 27.7 | 31.8 | 5.24 | 2.6 | SW | 81 | 1015 |
| 17:00 | 21:00 | 27.8 | 32.1 | 2.06 | 2.5 | SW | 82 | 1015 |
| 18:00 | 22:00 | 26.8 | 31.8 | 0.98 | 1.9 | SSW | 89 | 1015 |
| 19:00 | 23:00 | 26.8 | 31.4 | 0.09 | 2.4 | SW | 89 | 1016 |
| 20:00 | 00:00 | 26.6 | 32.8 | 0 | 0.1 | E | 89 | 1016 |
| 21:00 | 01:00 | 26.5 | 32.1 | 0 | 0.8 | ESE | 89 | 1016 |
| 22:00 | 02:00 | 26.3 | 31.5 | 0 | 1.3 | SE | 90 | 1016 |
| 23:00 | 03:00 | 26.3 | 31.3 | 0 | 1.4 | SSE | 89 | 1016 |
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
- Key Biscayne — 25.750°, -80.250°, ERA5 grid cell center, 10.7 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 10 September 2025 specifically — not a monthly average. See the Key Biscayne 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 (2026-07-17). Historical climate data for Key Biscayne, United States (25.75°N, 80.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Key Biscayne, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Key Biscayne, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Key Biscayne, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.