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Arnold

United States · 31 August 2016

ArnoldUnited States3:18 PM localChange location

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Average

24.2°C

low 21° · high 28.6°

Rainfall

3.6mm

rain recorded

Wind

1.7m/s

daily average

Humidity

85.3%

daily average

Cloud

95%

cover

Pressure

1017hPa

daily average

The temperature ranged from 21°C around 05:00 to 28.6°C around 14:00. Rain was recorded across 5 hours, from around 10:00 to 17:00 (3.6mm total).

How unusual was this day?

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

High temperature

53th percentile

Low temperature

70th percentile

Rainfall

82th percentile

Wind

23th 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 23.5°C, versus 24.2°C on this specific day.

Sun & daylight

Sunrise

06:30

Sunset

19:32

Day length

13h 2m

Hour by hour

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

↓ 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
00:0005:0022.426.401N961019
01:0006:0022.626.501NW961018
02:0007:0022.426.400.8WSW961018
03:0008:002225.301.5W961018
04:0009:0021.724.801.8WNW971017
05:0010:002124.500.6SSW971018
06:0011:0021.12500.3WNW971018
07:0012:0021.525.300.4NNW971018
08:0013:0022.125.102NNW971018
09:0014:0023.326.402.4NNW931018
10:0015:0024.827.70.11.9NNW801018
11:0016:0026.329.80.081.4NNW751018
12:0017:0027.630.90.051.8NW711018
13:0018:0028.431.60.062.4NW701017
14:0019:0028.631.72.452.6NNW701017
15:0020:0027.730.60.283NNW731016
16:0021:0026.429.40.252.6NNW771016
17:0022:0026.230.10.181.5NNW801016
18:0023:002629.50.062NNW801016
19:0000:0025.528.901.7NNW791016
20:0001:0024.126.601.9NNW791016
21:0002:0023.92602.1NNW781017
22:0003:0022.824.90.052.5N851017
23:0004:0022.924.902.8N861017

Same date, other years

202520242023202220212020201920182017

Nearby cities

Ballwin

0km away, same day

Kirkwood

0km away, same day

Manchester

0km away, same day

Crestwood

0km away, same day

Town and Country

0km away, same day

Ellisville

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
Arnold — 38.500°, -90.500°, ERA5 grid cell center, 13.0 km from requested point
Time zone
America/Chicago
What's shown here
The hourly and daily record for 31 August 2016 specifically — not a monthly average. See the Arnold 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 Arnold, United States (38.50°N, 90.50°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 Arnold, 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 Arnold, 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 Arnold, 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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