Reston
United States · 4 July 2016
Average
20.3°C
low 18.7° · high 22.3°
Rainfall
11.9mm
rain recorded
Wind
2.7m/s
daily average
Humidity
93.2%
daily average
Cloud
100%
cover
Pressure
1017hPa
daily average
The temperature ranged from 18.7°C around 03:00 to 22.3°C around 23:00. Rain was recorded across 19 hours, from around 04:00 to 23:00 (11.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
0th percentile
Low temperature
12th percentile
Rainfall
90th percentile
Wind
80th 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 26.4°C, versus 20.3°C on this specific day.
Sun & daylight
Sunrise
05:48
Sunset
20:37
Day length
14h 49m
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 | 18.9 | 20.2 | 0 | 2 | SSW | 92 | 1020 |
| 01:00 | 05:00 | 18.8 | 19.8 | 0 | 2.2 | SSW | 92 | 1020 |
| 02:00 | 06:00 | 18.9 | 20.2 | 0.01 | 1.8 | SSW | 91 | 1019 |
| 03:00 | 07:00 | 18.7 | 20.1 | 0.02 | 1.5 | SW | 91 | 1019 |
| 04:00 | 08:00 | 18.7 | 20.3 | 0.1 | 1.1 | SSW | 90 | 1019 |
| 05:00 | 09:00 | 18.7 | 20.6 | 0.16 | 1 | S | 93 | 1019 |
| 06:00 | 10:00 | 18.9 | 20.3 | 0.2 | 1.6 | SSE | 91 | 1019 |
| 07:00 | 11:00 | 18.8 | 20.2 | 0.16 | 1.8 | SSE | 93 | 1019 |
| 08:00 | 12:00 | 19 | 20.1 | 0.26 | 2.4 | SSE | 94 | 1020 |
| 09:00 | 13:00 | 19.2 | 20.7 | 0.5 | 2.3 | SSE | 97 | 1019 |
| 10:00 | 14:00 | 19.5 | 20.9 | 0.53 | 2.6 | SSE | 97 | 1019 |
| 11:00 | 15:00 | 20.8 | 21.8 | 0.54 | 2.7 | S | 86 | 1019 |
| 12:00 | 16:00 | 21.1 | 22.4 | 0.38 | 2.6 | SSE | 86 | 1019 |
| 13:00 | 17:00 | 21.1 | 22.5 | 0.36 | 2.7 | SSE | 88 | 1019 |
| 14:00 | 18:00 | 21.3 | 22.4 | 0.29 | 3.4 | SSE | 88 | 1018 |
| 15:00 | 19:00 | 21.6 | 22.4 | 0.83 | 4 | S | 90 | 1017 |
| 16:00 | 20:00 | 21.4 | 23 | 1.35 | 3.3 | S | 95 | 1016 |
| 17:00 | 21:00 | 21.4 | 22.8 | 2.55 | 4 | S | 98 | 1016 |
| 18:00 | 22:00 | 21.6 | 23.9 | 2.63 | 3.2 | S | 100 | 1015 |
| 19:00 | 23:00 | 21.6 | 23.1 | 0.47 | 4.1 | S | 99 | 1015 |
| 20:00 | 00:00 | 21.7 | 23.2 | 0.1 | 3.9 | S | 97 | 1014 |
| 21:00 | 01:00 | 21.9 | 23.7 | 0.16 | 3.6 | SSW | 95 | 1014 |
| 22:00 | 02:00 | 22.1 | 23.7 | 0.07 | 3.9 | SSW | 95 | 1014 |
| 23:00 | 03:00 | 22.3 | 24.2 | 0.22 | 3.9 | SSW | 97 | 1013 |
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
- Reston — 39.000°, -77.250°, ERA5 grid cell center, 8.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 4 July 2016 specifically — not a monthly average. See the Reston 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 Reston, 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 Reston, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Reston, 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 Reston, 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.