McLean
United States · 16 July 2020
Average
27.1°C
low 23.4°C · high 31.1°C
Rainfall
0.2mm
dry day
Wind
3.8m/s
daily average
Humidity
65.2%
daily average
Cloud
83%
cover
Pressure
1022hPa
daily average
The temperature ranged from 23.4°C around 05:00 to 31.1°C around 15:00. 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
34th percentile
Low temperature
73th percentile
Rainfall
47th percentile
Wind
99th 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 26.8°C, versus 27.1°C on this specific day.
Sun & daylight
Sunrise
05:56
Sunset
20:33
Day length
14h 36m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 26.1°C | 27.5°C | 0 | 3.7 | SE | 72 | 1022 |
| 01:00 | 05:00 | 25.3°C | 26.9°C | 0 | 3.3 | SE | 75 | 1023 |
| 02:00 | 06:00 | 24.6°C | 26.2°C | 0 | 3.1 | SE | 77 | 1023 |
| 03:00 | 07:00 | 24.3°C | 26°C | 0.01 | 3.2 | SE | 79 | 1023 |
| 04:00 | 08:00 | 24.1°C | 25.8°C | 0 | 3.3 | SE | 81 | 1022 |
| 05:00 | 09:00 | 23.4°C | 25.3°C | 0 | 3.3 | SE | 86 | 1022 |
| 06:00 | 10:00 | 24.1°C | 26.5°C | 0 | 2.2 | SE | 80 | 1023 |
| 07:00 | 11:00 | 24.4°C | 26.4°C | 0 | 2.8 | SE | 80 | 1023 |
| 08:00 | 12:00 | 25°C | 26.6°C | 0 | 3.5 | SE | 76 | 1024 |
| 09:00 | 13:00 | 25.8°C | 27.4°C | 0 | 3.4 | SE | 73 | 1024 |
| 10:00 | 14:00 | 27°C | 28°C | 0 | 3.3 | SE | 63 | 1023 |
| 11:00 | 15:00 | 28.4°C | 28.8°C | 0 | 3.4 | SSE | 53 | 1024 |
| 12:00 | 16:00 | 29.4°C | 29.6°C | 0.08 | 3.9 | SSE | 52 | 1024 |
| 13:00 | 17:00 | 30.2°C | 30.2°C | 0.01 | 4.4 | SSE | 50 | 1023 |
| 14:00 | 18:00 | 30.5°C | 30.3°C | 0.03 | 4.5 | SSE | 49 | 1023 |
| 15:00 | 19:00 | 31.1°C | 31°C | 0.01 | 4.7 | SSE | 49 | 1022 |
| 16:00 | 20:00 | 31.1°C | 30.8°C | 0 | 4.9 | SSE | 48 | 1021 |
| 17:00 | 21:00 | 30.7°C | 29.9°C | 0 | 5.1 | SSE | 46 | 1021 |
| 18:00 | 22:00 | 30°C | 30.4°C | 0.05 | 4.6 | SSE | 55 | 1021 |
| 19:00 | 23:00 | 28.8°C | 28.9°C | 0 | 4.6 | SSE | 57 | 1021 |
| 20:00 | 00:00 | 27.6°C | 27.9°C | 0 | 4.3 | SE | 60 | 1021 |
| 21:00 | 01:00 | 26.6°C | 27°C | 0 | 4 | SE | 63 | 1021 |
| 22:00 | 02:00 | 26°C | 26.3°C | 0 | 4.2 | SSE | 66 | 1021 |
| 23:00 | 03:00 | 25.3°C | 26.3°C | 0 | 4.3 | SSE | 75 | 1021 |
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 16 July 2020 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 (2026-07-21). 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 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for McLean, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 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 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.