McLean
United States · 6 July 2021
Average
28.4°C
low 22.5° · high 35°
Rainfall
1.4mm
rain recorded
Wind
2.5m/s
daily average
Humidity
64.2%
daily average
Cloud
26%
cover
Pressure
1017hPa
daily average
The temperature ranged from 22.5°C around 05:00 to 35°C around 17:00. Rain was recorded across 2 hours, from around 19:00 to 20:00 (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
93th percentile
Low temperature
54th percentile
Rainfall
62th percentile
Wind
73th 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 26.5°C, versus 28.4°C on this specific day.
Sun & daylight
Sunrise
05:49
Sunset
20:37
Day length
14h 48m
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 | 24.9 | 25.7 | 0 | 3.4 | S | 70 | 1018 |
| 01:00 | 05:00 | 24.1 | 24.9 | 0 | 3.4 | SSW | 73 | 1018 |
| 02:00 | 06:00 | 23.6 | 24.4 | 0 | 3.3 | SSW | 74 | 1018 |
| 03:00 | 07:00 | 23.5 | 24.3 | 0 | 3.2 | SSW | 75 | 1018 |
| 04:00 | 08:00 | 23.1 | 24.1 | 0 | 2.9 | SSW | 75 | 1017 |
| 05:00 | 09:00 | 22.5 | 23.4 | 0 | 2.9 | SSW | 78 | 1017 |
| 06:00 | 10:00 | 22.6 | 24.5 | 0 | 2.4 | SW | 84 | 1018 |
| 07:00 | 11:00 | 22.9 | 25 | 0 | 2.4 | SW | 84 | 1018 |
| 08:00 | 12:00 | 24.1 | 26.6 | 0 | 1.8 | WSW | 79 | 1018 |
| 09:00 | 13:00 | 26 | 28.8 | 0 | 1.6 | WSW | 71 | 1018 |
| 10:00 | 14:00 | 27.9 | 30.9 | 0 | 1.5 | W | 65 | 1018 |
| 11:00 | 15:00 | 31.2 | 34.6 | 0 | 1.3 | W | 55 | 1018 |
| 12:00 | 16:00 | 32.5 | 36.1 | 0 | 1.4 | WSW | 54 | 1018 |
| 13:00 | 17:00 | 33.3 | 36.5 | 0.02 | 1.9 | SW | 50 | 1017 |
| 14:00 | 18:00 | 33.9 | 36.5 | 0 | 2.4 | SW | 48 | 1016 |
| 15:00 | 19:00 | 34.5 | 36.7 | 0.02 | 2.9 | SSW | 46 | 1016 |
| 16:00 | 20:00 | 34.8 | 36.5 | 0 | 3.4 | SSW | 44 | 1015 |
| 17:00 | 21:00 | 35 | 36.3 | 0.02 | 3.6 | SSW | 42 | 1014 |
| 18:00 | 22:00 | 34.1 | 36.5 | 0.06 | 2.4 | SW | 45 | 1015 |
| 19:00 | 23:00 | 32.7 | 35.7 | 0.17 | 1.8 | SSW | 51 | 1015 |
| 20:00 | 00:00 | 29.6 | 32.4 | 1.12 | 2.8 | SSW | 65 | 1015 |
| 21:00 | 01:00 | 29.1 | 31.7 | 0 | 3.1 | SSW | 66 | 1015 |
| 22:00 | 02:00 | 28.1 | 31.4 | 0 | 2.1 | SW | 71 | 1015 |
| 23:00 | 03:00 | 27 | 30.4 | 0 | 1.8 | WSW | 74 | 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
- McLean — 39.000°, -77.250°, ERA5 grid cell center, 9.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 6 July 2021 specifically — not a monthly average. See the McLean 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 McLean, 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 McLean, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for McLean, 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 McLean, 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.