Home / Arnold / 29 August 2018
Arnold
United States · 29 August 2018
← 28 August 201830 August 2018 →
Average
24.3°C
low 22.6° · high 27.1°
Rainfall
0.7mm
dry day
Wind
2.7m/s
daily average
Humidity
79.9%
daily average
Cloud
93%
cover
Pressure
1017hPa
daily average
The temperature ranged from 22.6°C around 06:00 to 27.1°C around 00:00. Rain was recorded across 3 hours, from around 11:00 to 13:00 (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
34th percentile
Low temperature
85th percentile
Rainfall
67th percentile
Wind
77th 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 23.7°C, versus 24.3°C on this specific day.
Sun & daylight
Sunrise
06:28
Sunset
19:36
Day length
13h 8m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 27.1 | 28.8 | 0 | 4.7 | SSW | 76 | 1014 |
| 01:00 | 06:00 | 26.7 | 28.5 | 0 | 4.4 | SSW | 77 | 1014 |
| 02:00 | 07:00 | 26.1 | 27.7 | 0 | 4 | SW | 76 | 1014 |
| 03:00 | 08:00 | 24.9 | 26.2 | 0 | 4 | SSW | 78 | 1014 |
| 04:00 | 09:00 | 24.5 | 25.5 | 0 | 4.2 | SSW | 79 | 1014 |
| 05:00 | 10:00 | 23 | 25.6 | 0 | 1.8 | NNW | 85 | 1016 |
| 06:00 | 11:00 | 22.6 | 25.9 | 0 | 0.6 | NE | 86 | 1017 |
| 07:00 | 12:00 | 22.6 | 24.9 | 0 | 2.1 | ESE | 86 | 1017 |
| 08:00 | 13:00 | 23 | 24.7 | 0 | 2.9 | SSE | 84 | 1017 |
| 09:00 | 14:00 | 23.6 | 24.7 | 0 | 3.9 | S | 82 | 1017 |
| 10:00 | 15:00 | 24.9 | 26.2 | 0 | 3.5 | SSW | 75 | 1018 |
| 11:00 | 16:00 | 24.6 | 25.3 | 0.17 | 4.2 | SSW | 75 | 1017 |
| 12:00 | 17:00 | 24.2 | 26 | 0.13 | 2.9 | SW | 78 | 1017 |
| 13:00 | 18:00 | 23.7 | 26 | 0.2 | 2.4 | W | 82 | 1017 |
| 14:00 | 19:00 | 23.7 | 25.9 | 0 | 2.7 | W | 85 | 1017 |
| 15:00 | 20:00 | 23.3 | 25.7 | 0 | 2.8 | W | 90 | 1017 |
| 16:00 | 21:00 | 23.4 | 25.8 | 0 | 2.1 | NW | 84 | 1017 |
| 17:00 | 22:00 | 26.3 | 28.5 | 0.02 | 2.6 | NNW | 71 | 1017 |
| 18:00 | 23:00 | 25.8 | 28.5 | 0.05 | 2 | N | 74 | 1017 |
| 19:00 | 00:00 | 25.1 | 27.8 | 0.02 | 1.7 | NNE | 76 | 1018 |
| 20:00 | 01:00 | 24.2 | 26.3 | 0 | 2 | NNE | 76 | 1018 |
| 21:00 | 02:00 | 23.8 | 26 | 0 | 1.8 | NE | 77 | 1019 |
| 22:00 | 03:00 | 22.9 | 25.6 | 0.04 | 1.3 | NE | 83 | 1020 |
| 23:00 | 04:00 | 23 | 25.9 | 0.04 | 1.1 | ENE | 84 | 1020 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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 29 August 2018 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
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/
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/
"Historical Climate Data for Arnold, 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 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/}
}Notice something wrong with this data? Report a data issue.