Home / Washington / 21 July 2025
Washington
United States · 21 July 2025
Average
26.6°C
low 24° · high 30°
Rainfall
0.7mm
dry day
Wind
1.9m/s
daily average
Humidity
66.3%
daily average
Cloud
70%
cover
Pressure
1013hPa
daily average
The temperature ranged from 24°C around 23:00 to 30°C around 17:00. Rain was recorded across 2 hours, from around 02:00 to 03:00 (0.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
20th percentile
Low temperature
79th percentile
Rainfall
56th percentile
Wind
49th 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 27°C, versus 26.6°C on this specific day.
Sun & daylight
Sunrise
05:59
Sunset
20:28
Day length
14h 29m
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 | 26.8 | 28.9 | 0 | 2.6 | NW | 69 | 1011 |
| 01:00 | 05:00 | 26.4 | 28.2 | 0.02 | 2.9 | NW | 69 | 1012 |
| 02:00 | 06:00 | 26.2 | 28.1 | 0.1 | 2.7 | NW | 69 | 1012 |
| 03:00 | 07:00 | 25.8 | 27.9 | 0.4 | 2.5 | NW | 72 | 1012 |
| 04:00 | 08:00 | 24.6 | 26.8 | 0.05 | 2.6 | NW | 78 | 1011 |
| 05:00 | 09:00 | 24.3 | 26.4 | 0 | 2.7 | NNW | 80 | 1012 |
| 06:00 | 10:00 | 24.1 | 27.2 | 0 | 1.9 | NW | 84 | 1012 |
| 07:00 | 11:00 | 24 | 26.7 | 0 | 2.3 | NNW | 84 | 1013 |
| 08:00 | 12:00 | 24.6 | 27.3 | 0.01 | 2.2 | NNW | 81 | 1013 |
| 09:00 | 13:00 | 24.9 | 27.7 | 0.03 | 2 | NNW | 79 | 1014 |
| 10:00 | 14:00 | 25.9 | 28.7 | 0 | 1.9 | N | 74 | 1014 |
| 11:00 | 15:00 | 26.7 | 29.3 | 0.01 | 1.9 | NNE | 70 | 1015 |
| 12:00 | 16:00 | 27.7 | 30.5 | 0.04 | 1.5 | NNE | 64 | 1015 |
| 13:00 | 17:00 | 28.5 | 31.1 | 0.02 | 1.4 | N | 59 | 1014 |
| 14:00 | 18:00 | 29.2 | 31.6 | 0 | 1.4 | N | 55 | 1014 |
| 15:00 | 19:00 | 29.7 | 31.9 | 0 | 1.4 | NNW | 52 | 1014 |
| 16:00 | 20:00 | 29.9 | 31.7 | 0 | 1.7 | NNW | 51 | 1014 |
| 17:00 | 21:00 | 30 | 31.6 | 0 | 1.7 | N | 49 | 1013 |
| 18:00 | 22:00 | 29.2 | 30.7 | 0 | 1.5 | NNW | 49 | 1014 |
| 19:00 | 23:00 | 28.6 | 30.4 | 0 | 0.9 | N | 50 | 1014 |
| 20:00 | 00:00 | 27.2 | 29.3 | 0 | 1.2 | N | 59 | 1014 |
| 21:00 | 01:00 | 26.1 | 27.6 | 0 | 1.5 | N | 59 | 1015 |
| 22:00 | 02:00 | 24.6 | 26.2 | 0 | 1.5 | N | 65 | 1016 |
| 23:00 | 03:00 | 24 | 25.7 | 0 | 1.6 | N | 70 | 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
- Washington — 39.000°, -77.000°, ERA5 grid cell center, 12.1 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 21 July 2025 specifically — not a monthly average. See the Washington 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 Washington, United States (39.00°N, 77.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Washington, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Washington, 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 Washington, 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.