Home / Chalmette / 27 August 2018
Chalmette
United States · 27 August 2018
← 26 August 201828 August 2018 →
Average
27.9°C
low 26.6°C · high 29.6°C
Rainfall
3.5mm
rain recorded
Wind
3.4m/s
daily average
Humidity
83%
daily average
Cloud
65%
cover
Pressure
1017hPa
daily average
The temperature ranged from 26.6°C around 04:00 to 29.6°C around 14:00. Rain was recorded across 6 hours, from around 09:00 to 17:00 (3.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
24th percentile
Low temperature
81th percentile
Rainfall
55th percentile
Wind
76th 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 27.9°C on this specific day.
Sun & daylight
Sunrise
06:34
Sunset
19:28
Day length
12h 54m
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 | 27.7°C | 31.7°C | 0 | 3.5 | SE | 86 | 1018 |
| 01:00 | 06:00 | 27.5°C | 31.3°C | 0.02 | 3.6 | SE | 86 | 1018 |
| 02:00 | 07:00 | 27.1°C | 30.9°C | 0.01 | 3.7 | SE | 87 | 1017 |
| 03:00 | 08:00 | 27°C | 30.9°C | 0 | 3.6 | SE | 88 | 1017 |
| 04:00 | 09:00 | 26.6°C | 30.4°C | 0 | 3.4 | SE | 90 | 1017 |
| 05:00 | 10:00 | 26.7°C | 31.1°C | 0 | 2 | SSE | 86 | 1017 |
| 06:00 | 11:00 | 26.6°C | 31.3°C | 0 | 1.8 | SE | 86 | 1017 |
| 07:00 | 12:00 | 26.9°C | 30.9°C | 0.01 | 2.7 | ESE | 84 | 1018 |
| 08:00 | 13:00 | 28°C | 31.7°C | 0.04 | 3.5 | SE | 82 | 1018 |
| 09:00 | 14:00 | 28.2°C | 32.3°C | 0.25 | 3 | SE | 81 | 1018 |
| 10:00 | 15:00 | 28.9°C | 32.8°C | 0.08 | 3.1 | ESE | 77 | 1019 |
| 11:00 | 16:00 | 29.1°C | 33.1°C | 0.07 | 3.6 | ESE | 80 | 1019 |
| 12:00 | 17:00 | 28.8°C | 32.5°C | 0.44 | 4.1 | ESE | 81 | 1019 |
| 13:00 | 18:00 | 28.8°C | 33.2°C | 2.04 | 3.8 | ESE | 85 | 1018 |
| 14:00 | 19:00 | 29.6°C | 34.2°C | 0.11 | 3.4 | ESE | 81 | 1018 |
| 15:00 | 20:00 | 29.4°C | 33°C | 0.15 | 3.5 | ESE | 75 | 1017 |
| 16:00 | 21:00 | 29°C | 32.3°C | 0.08 | 3.7 | ESE | 75 | 1017 |
| 17:00 | 22:00 | 28.6°C | 32.6°C | 0.1 | 4 | ESE | 84 | 1016 |
| 18:00 | 23:00 | 28°C | 31.8°C | 0.04 | 3.5 | ESE | 82 | 1016 |
| 19:00 | 00:00 | 27.4°C | 31.3°C | 0.01 | 2.7 | ESE | 82 | 1016 |
| 20:00 | 01:00 | 27.1°C | 30.9°C | 0 | 2.8 | SE | 82 | 1016 |
| 21:00 | 02:00 | 27.1°C | 30.6°C | 0 | 3.3 | SE | 84 | 1017 |
| 22:00 | 03:00 | 27.3°C | 30.3°C | 0 | 4.4 | SE | 85 | 1017 |
| 23:00 | 04:00 | 27.5°C | 30.4°C | 0.01 | 4.7 | SE | 83 | 1017 |
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 2018 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 (2026-07-21). 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 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Chalmette, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 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 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.