Home / Chalmette / 27 August 2017
Chalmette
United States · 27 August 2017
← 26 August 201728 August 2017 →
Average
27.1°C
low 26.5° · high 28°
Rainfall
14.6mm
rain recorded
Wind
3.4m/s
daily average
Humidity
88.4%
daily average
Cloud
99%
cover
Pressure
1013hPa
daily average
The temperature ranged from 26.5°C around 04:00 to 28°C around 00:00. Rain was recorded across 18 hours, from around 01:00 to 19:00 (14.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
4th percentile
Low temperature
80th percentile
Rainfall
89th percentile
Wind
74th 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 28.2°C, versus 27.1°C on this specific day.
Sun & daylight
Sunrise
06:34
Sunset
19:27
Day length
12h 53m
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 | 28 | 33.2 | 0.07 | 2.9 | ESE | 91 | 1014 |
| 01:00 | 06:00 | 27.3 | 31.7 | 1.08 | 3.5 | E | 90 | 1014 |
| 02:00 | 07:00 | 27.2 | 31.4 | 1.04 | 3.7 | E | 91 | 1014 |
| 03:00 | 08:00 | 26.9 | 30.8 | 1.23 | 3.9 | ESE | 91 | 1014 |
| 04:00 | 09:00 | 26.5 | 30.4 | 0.48 | 3.9 | ESE | 93 | 1014 |
| 05:00 | 10:00 | 26.5 | 31.6 | 0.17 | 2 | ESE | 93 | 1013 |
| 06:00 | 11:00 | 27.1 | 31.9 | 0.07 | 2.8 | E | 91 | 1013 |
| 07:00 | 12:00 | 27 | 30.9 | 0.74 | 3.7 | E | 90 | 1014 |
| 08:00 | 13:00 | 26.9 | 31.3 | 1.04 | 3.3 | E | 92 | 1014 |
| 09:00 | 14:00 | 27.1 | 31.6 | 0.54 | 3.4 | ESE | 92 | 1014 |
| 10:00 | 15:00 | 27.7 | 32.2 | 0.45 | 3.1 | ESE | 88 | 1014 |
| 11:00 | 16:00 | 27.8 | 31.8 | 0.81 | 3.6 | E | 86 | 1014 |
| 12:00 | 17:00 | 26.9 | 29.7 | 3.09 | 4.6 | E | 86 | 1015 |
| 13:00 | 18:00 | 26.8 | 29.3 | 1.88 | 5.1 | E | 87 | 1014 |
| 14:00 | 19:00 | 26.9 | 29.5 | 0.52 | 4.8 | E | 85 | 1013 |
| 15:00 | 20:00 | 27.1 | 30 | 0.1 | 4.4 | E | 84 | 1013 |
| 16:00 | 21:00 | 27.3 | 30.7 | 0.14 | 4.2 | ESE | 86 | 1013 |
| 17:00 | 22:00 | 27.1 | 32.4 | 0.74 | 2 | ESE | 90 | 1012 |
| 18:00 | 23:00 | 27.2 | 33.1 | 0.14 | 0.9 | E | 89 | 1013 |
| 19:00 | 00:00 | 27.1 | 32.1 | 0.2 | 1.8 | E | 87 | 1012 |
| 20:00 | 01:00 | 27.2 | 31 | 0.04 | 3.4 | E | 86 | 1012 |
| 21:00 | 02:00 | 27.1 | 30.6 | 0 | 3.6 | E | 85 | 1012 |
| 22:00 | 03:00 | 27.2 | 30.7 | 0 | 3.4 | E | 84 | 1012 |
| 23:00 | 04:00 | 27.2 | 30.7 | 0.01 | 3.3 | E | 83 | 1012 |
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
- Chalmette — 30.000°, -90.000°, ERA5 grid cell center, 7.2 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 27 August 2017 specifically — not a monthly average. See the Chalmette 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 (2026-07-18). Historical climate data for Chalmette, United States (30.00°N, 90.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Chalmette, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Chalmette, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Chalmette, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.