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Washington

United States · 22 July 2017

WashingtonUnited States6:29 AM localChange location

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Average

28.4°C

low 24.4° · high 34.3°

Rainfall

17mm

rain recorded

Wind

1.8m/s

daily average

Humidity

71.8%

daily average

Cloud

94%

cover

Pressure

1011hPa

daily average

The temperature ranged from 24.4°C around 23:00 to 34.3°C around 15:00. Rain was recorded across 8 hours, from around 03:00 to 23:00 (17mm total).

How unusual was this day?

Compared against the same 135 calendar days (±7 days) across the other 9 years on file.

High temperature

75th percentile

Low temperature

87th percentile

Rainfall

94th percentile

Wind

41th 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 28.4°C on this specific day.

Sun & daylight

Sunrise

06:00

Sunset

20:28

Day length

14h 28m

Hour by hour

Temperature (line) and hourly rainfall (bars), local time — America/New_York.

↓ Download CSV
00:0006:0012:0018:0023:00

Cumulative rainfall through the day.

00:0006:0012:0018:0023:00
Local timeUTCTemp °CFeels °CRain mmWind m/sDirHumidity %Pressure hPa
00:0004:0028.73400.5N751012
01:0005:0027.632.301.1N781013
02:0006:0027.131.301.2N781012
03:0007:0026.630.40.51.4N761012
04:0008:0026.729.90.042NW751012
05:0009:002628.901.9NW751012
06:0010:0025.929.302.1NNW811012
07:0011:0025.82902.2NNW811012
08:0012:0026.430.401.8NW811013
09:0013:0027.532.401.3NNW811013
10:0014:0028.834.20.040.5NNE751012
11:0015:0031.235.20.080.3S551012
12:0016:0032.235.40.011.5SW521012
13:0017:0033.436.202.3WSW491011
14:0018:0033.735.70.013.1WSW481011
15:0019:0034.3361.863.7W471010
16:0020:0033.535.30.031.9WSW421010
17:0021:0029.832.10.012.5SW581009
18:0022:0027.9321.552.3W781010
19:0023:0026.731.40.751.3SW831009
20:0000:0026.731.20.631.7SW841008
21:0001:0025.528.85.982.6WSW861009
22:0002:002528.542.6W901009
23:0003:0024.428.61.462W951009

Same date, other years

202520242023202220212020201920182016

Nearby cities

Arlington

0km away, same day

Silver Spring

0km away, same day

Bethesda

0km away, same day

Downtown DC

0km away, same day

Aspen Hill

0km away, same day

Wheaton

0km away, same day

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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 22 July 2017 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

Plain text
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/
APA
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/
MLA
"Historical Climate Data for Washington, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
BibTeX
@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/}
}

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