Home / Cabin John / 9 July 2021
Cabin John
United States · 9 July 2021
Average
25.2°C
low 20.5° · high 30.2°
Rainfall
9.6mm
rain recorded
Wind
2.4m/s
daily average
Humidity
79.2%
daily average
Cloud
62%
cover
Pressure
1011hPa
daily average
The temperature ranged from 20.5°C around 05:00 to 30.2°C around 14:00. Rain was recorded across 8 hours, from around 00:00 to 19:00 (9.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
19th percentile
Low temperature
21th percentile
Rainfall
88th percentile
Wind
74th 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 26.7°C, versus 25.2°C on this specific day.
Sun & daylight
Sunrise
05:51
Sunset
20:36
Day length
14h 45m
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 | 21.5 | 22.4 | 2.31 | 4.1 | N | 93 | 1011 |
| 01:00 | 05:00 | 21.3 | 22.1 | 2.1 | 4.3 | NNW | 93 | 1010 |
| 02:00 | 06:00 | 20.9 | 21.7 | 0.53 | 4.2 | NNW | 94 | 1010 |
| 03:00 | 07:00 | 20.9 | 21.7 | 2.81 | 4 | NNW | 94 | 1010 |
| 04:00 | 08:00 | 20.8 | 22 | 0.62 | 3.3 | NW | 94 | 1010 |
| 05:00 | 09:00 | 20.5 | 22 | 0.01 | 2.9 | NW | 95 | 1011 |
| 06:00 | 10:00 | 21.7 | 24.1 | 0 | 1.9 | WNW | 90 | 1011 |
| 07:00 | 11:00 | 22 | 24.6 | 0 | 1.7 | WSW | 90 | 1011 |
| 08:00 | 12:00 | 23.2 | 25.7 | 0 | 2.2 | WSW | 86 | 1012 |
| 09:00 | 13:00 | 24.8 | 27.3 | 0 | 2.2 | WSW | 79 | 1012 |
| 10:00 | 14:00 | 26.2 | 28.4 | 0 | 2.6 | W | 73 | 1012 |
| 11:00 | 15:00 | 28.2 | 30.6 | 0.02 | 2.9 | W | 67 | 1012 |
| 12:00 | 16:00 | 29.3 | 31.5 | 0.1 | 3.1 | W | 62 | 1012 |
| 13:00 | 17:00 | 30.1 | 32.9 | 0.05 | 2.3 | W | 60 | 1012 |
| 14:00 | 18:00 | 30.2 | 33.3 | 0.06 | 1.9 | WSW | 59 | 1012 |
| 15:00 | 19:00 | 29.6 | 32.8 | 0.02 | 1.8 | SW | 62 | 1011 |
| 16:00 | 20:00 | 28.2 | 32 | 0.03 | 2.1 | SW | 74 | 1011 |
| 17:00 | 21:00 | 28.7 | 32.8 | 0.02 | 1.9 | SW | 73 | 1011 |
| 18:00 | 22:00 | 28.7 | 32.4 | 0.62 | 0.5 | S | 63 | 1010 |
| 19:00 | 23:00 | 27.5 | 30.9 | 0.25 | 1.4 | SSE | 70 | 1011 |
| 20:00 | 00:00 | 26.6 | 29.9 | 0.06 | 1.5 | SSE | 73 | 1012 |
| 21:00 | 01:00 | 25.2 | 28.7 | 0 | 1.5 | S | 81 | 1013 |
| 22:00 | 02:00 | 24.4 | 27.9 | 0 | 1.6 | SW | 87 | 1014 |
| 23:00 | 03:00 | 23.7 | 26.6 | 0 | 2.2 | W | 88 | 1014 |
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
- Cabin John — 39.000°, -77.250°, 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 9 July 2021 specifically — not a monthly average. See the Cabin John 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 (2026-07-16). Historical climate data for Cabin John, United States (39.00°N, 77.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Cabin John, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cabin John, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Cabin John, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.