Reston
United States · 7 July 2017
Average
26.2°C
low 22.2° · high 31.2°
Rainfall
1.7mm
rain recorded
Wind
2.2m/s
daily average
Humidity
74%
daily average
Cloud
63%
cover
Pressure
1010hPa
daily average
The temperature ranged from 22.2°C around 05:00 to 31.2°C around 17:00. Rain was recorded across 5 hours, from around 01:00 to 06:00 (1.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
36th percentile
Low temperature
51th percentile
Rainfall
61th percentile
Wind
55th 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 26.2°C on this specific day.
Sun & daylight
Sunrise
05:50
Sunset
20:37
Day length
14h 47m
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 | 22.6 | 27 | 0.05 | 0.7 | NE | 98 | 1013 |
| 01:00 | 05:00 | 22.7 | 27.1 | 0.19 | 0.7 | N | 98 | 1012 |
| 02:00 | 06:00 | 22.5 | 27 | 0.47 | 0.4 | NNE | 98 | 1012 |
| 03:00 | 07:00 | 22.5 | 26.8 | 0.03 | 0.7 | ESE | 97 | 1011 |
| 04:00 | 08:00 | 22.3 | 26.5 | 0.12 | 0.6 | SE | 97 | 1010 |
| 05:00 | 09:00 | 22.2 | 26.6 | 0.49 | 0.5 | SSW | 99 | 1010 |
| 06:00 | 10:00 | 22.7 | 27 | 0.25 | 0.5 | S | 95 | 1010 |
| 07:00 | 11:00 | 22.9 | 26.7 | 0.02 | 1.2 | SW | 95 | 1010 |
| 08:00 | 12:00 | 23.7 | 27 | 0 | 2.5 | WSW | 93 | 1010 |
| 09:00 | 13:00 | 24.7 | 28.1 | 0.03 | 2.9 | W | 92 | 1010 |
| 10:00 | 14:00 | 25.5 | 27.4 | 0.05 | 4.8 | NW | 86 | 1010 |
| 11:00 | 15:00 | 27.2 | 27.8 | 0 | 4 | NW | 62 | 1011 |
| 12:00 | 16:00 | 28.4 | 29.6 | 0 | 2.5 | NW | 54 | 1011 |
| 13:00 | 17:00 | 29.6 | 30.2 | 0 | 3 | NW | 49 | 1011 |
| 14:00 | 18:00 | 30.2 | 30.7 | 0 | 2.9 | WNW | 47 | 1010 |
| 15:00 | 19:00 | 30.2 | 31.2 | 0.01 | 2.6 | W | 48 | 1010 |
| 16:00 | 20:00 | 30.8 | 31.5 | 0.02 | 3.1 | W | 48 | 1009 |
| 17:00 | 21:00 | 31.2 | 31.9 | 0 | 3.1 | W | 46 | 1009 |
| 18:00 | 22:00 | 30.3 | 32.4 | 0 | 2.8 | SW | 57 | 1009 |
| 19:00 | 23:00 | 29.6 | 31.4 | 0 | 3.1 | WSW | 59 | 1009 |
| 20:00 | 00:00 | 28.8 | 30.4 | 0 | 3.4 | W | 61 | 1009 |
| 21:00 | 01:00 | 27.3 | 28.8 | 0 | 2.4 | W | 61 | 1009 |
| 22:00 | 02:00 | 26.2 | 27.4 | 0 | 2.5 | W | 63 | 1009 |
| 23:00 | 03:00 | 24.2 | 26.4 | 0 | 2.1 | W | 76 | 1010 |
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 7 July 2017 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Reston, 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 Reston, 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.