Home / Ballwin / 29 August 2017
Ballwin
United States · 29 August 2017
← 28 August 201730 August 2017 →
Average
21.7°C
low 16.8°C · high 27.6°C
Rainfall
0.6mm
dry day
Wind
1.6m/s
daily average
Humidity
78.3%
daily average
Cloud
40%
cover
Pressure
1016hPa
daily average
The temperature ranged from 16.8°C around 06:00 to 27.6°C around 16:00. Rain was recorded across 2 hours, from around 12:00 to 14:00 (0.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
35th percentile
Low temperature
27th percentile
Rainfall
64th percentile
Wind
20th 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 24.1°C, versus 21.7°C on this specific day.
Sun & daylight
Sunrise
06:28
Sunset
19:35
Day length
13h 7m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 18.7°C | 20.4°C | 0.06 | 1.4 | NE | 94 | 1015 |
| 01:00 | 06:00 | 18.7°C | 20.3°C | 0.02 | 1.4 | NE | 94 | 1015 |
| 02:00 | 07:00 | 18.6°C | 20°C | 0 | 1.5 | NE | 93 | 1015 |
| 03:00 | 08:00 | 17.8°C | 19.2°C | 0 | 1.3 | NNE | 94 | 1015 |
| 04:00 | 09:00 | 17.2°C | 18.5°C | 0 | 1.2 | NNE | 96 | 1015 |
| 05:00 | 10:00 | 16.9°C | 18.9°C | 0 | 0.6 | NW | 100 | 1015 |
| 06:00 | 11:00 | 16.8°C | 18.3°C | 0 | 1.2 | NW | 100 | 1016 |
| 07:00 | 12:00 | 17.1°C | 18.4°C | 0 | 1.5 | NNW | 100 | 1016 |
| 08:00 | 13:00 | 17.8°C | 19.4°C | 0 | 1.6 | NW | 100 | 1017 |
| 09:00 | 14:00 | 19.1°C | 20.5°C | 0 | 1.9 | N | 93 | 1017 |
| 10:00 | 15:00 | 21.6°C | 22.7°C | 0.04 | 1.8 | N | 74 | 1017 |
| 11:00 | 16:00 | 23.1°C | 24.4°C | 0.07 | 1.7 | N | 71 | 1017 |
| 12:00 | 17:00 | 24.6°C | 26.1°C | 0.12 | 1.7 | N | 65 | 1017 |
| 13:00 | 18:00 | 25.6°C | 27.4°C | 0.09 | 1.5 | N | 63 | 1017 |
| 14:00 | 19:00 | 26.4°C | 28.5°C | 0.11 | 1.2 | N | 61 | 1016 |
| 15:00 | 20:00 | 26.9°C | 29°C | 0.06 | 1.4 | NNW | 60 | 1016 |
| 16:00 | 21:00 | 27.6°C | 29°C | 0.01 | 1.9 | N | 55 | 1015 |
| 17:00 | 22:00 | 27.3°C | 28.9°C | 0 | 1.7 | N | 56 | 1015 |
| 18:00 | 23:00 | 26.7°C | 27.9°C | 0 | 2.1 | N | 58 | 1015 |
| 19:00 | 00:00 | 25.6°C | 26.9°C | 0 | 1.8 | NNE | 61 | 1015 |
| 20:00 | 01:00 | 23.8°C | 24.3°C | 0 | 1.9 | NNE | 61 | 1016 |
| 21:00 | 02:00 | 22.2°C | 22.5°C | 0 | 2.3 | NNE | 67 | 1016 |
| 22:00 | 03:00 | 20.2°C | 20.8°C | 0 | 2.3 | NNE | 80 | 1016 |
| 23:00 | 04:00 | 20°C | 20.8°C | 0 | 2.2 | NNE | 82 | 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
- Ballwin — 38.500°, -90.500°, ERA5 grid cell center, 11.3 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 29 August 2017 specifically — not a monthly average. See the Ballwin 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 (2026-07-19). Historical climate data for Ballwin, 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 Ballwin, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ballwin, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Ballwin, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.