Home / Chalmette / 31 August 2017
Chalmette
United States · 31 August 2017
← 30 August 20171 September 2017 →
Average
27.9°C
low 26.1°C · high 30.2°C
Rainfall
3.1mm
rain recorded
Wind
7.2m/s
daily average
Humidity
75.9%
daily average
Cloud
20%
cover
Pressure
1011hPa
daily average
The temperature ranged from 26.1°C around 23:00 to 30.2°C around 14:00. Rain was recorded across 9 hours, from around 08:00 to 22:00 (3.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
46th percentile
Low temperature
72th percentile
Rainfall
49th percentile
Wind
97th 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°C, versus 27.9°C on this specific day.
Sun & daylight
Sunrise
06:36
Sunset
19:23
Day length
12h 47m
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 | 27.3°C | 27.6°C | 0 | 7.2 | SSW | 79 | 1010 |
| 01:00 | 06:00 | 27.2°C | 27.4°C | 0.01 | 7.5 | SSW | 80 | 1010 |
| 02:00 | 07:00 | 27°C | 27°C | 0.01 | 7.7 | SSW | 81 | 1010 |
| 03:00 | 08:00 | 27°C | 26.9°C | 0.01 | 8 | SSW | 81 | 1010 |
| 04:00 | 09:00 | 26.9°C | 26.9°C | 0.02 | 7.9 | SSW | 82 | 1010 |
| 05:00 | 10:00 | 26.7°C | 26.5°C | 0.04 | 7.9 | SSW | 81 | 1010 |
| 06:00 | 11:00 | 26.6°C | 26.7°C | 0.06 | 7.4 | SSW | 82 | 1011 |
| 07:00 | 12:00 | 26.7°C | 26.4°C | 0.07 | 8 | SW | 81 | 1011 |
| 08:00 | 13:00 | 26.7°C | 26.6°C | 0.17 | 8.1 | SW | 82 | 1011 |
| 09:00 | 14:00 | 27°C | 26.6°C | 0.39 | 8.5 | SW | 82 | 1012 |
| 10:00 | 15:00 | 27.7°C | 26.8°C | 0.28 | 8.7 | SW | 76 | 1012 |
| 11:00 | 16:00 | 28.5°C | 28.2°C | 0.24 | 8.4 | SW | 75 | 1012 |
| 12:00 | 17:00 | 29.5°C | 29.8°C | 0.21 | 8.1 | SW | 73 | 1012 |
| 13:00 | 18:00 | 30.1°C | 30.4°C | 0.18 | 8 | SW | 71 | 1011 |
| 14:00 | 19:00 | 30.2°C | 30.5°C | 0.27 | 7.8 | SW | 69 | 1012 |
| 15:00 | 20:00 | 30°C | 29.6°C | 0.75 | 8.1 | SW | 67 | 1011 |
| 16:00 | 21:00 | 30.1°C | 29.9°C | 0.05 | 7.7 | SW | 65 | 1011 |
| 17:00 | 22:00 | 29.8°C | 30.5°C | 0.03 | 6.2 | SW | 66 | 1011 |
| 18:00 | 23:00 | 29.1°C | 29.8°C | 0.04 | 6 | WSW | 68 | 1011 |
| 19:00 | 00:00 | 28.3°C | 29.3°C | 0.02 | 5.4 | SW | 70 | 1011 |
| 20:00 | 01:00 | 27.6°C | 28.8°C | 0.04 | 5.2 | SW | 72 | 1012 |
| 21:00 | 02:00 | 27.1°C | 28.5°C | 0.09 | 5.1 | WSW | 76 | 1012 |
| 22:00 | 03:00 | 26.2°C | 28°C | 0.1 | 4.9 | W | 82 | 1013 |
| 23:00 | 04:00 | 26.1°C | 28.4°C | 0.02 | 4.4 | W | 83 | 1013 |
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 31 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 (2026-07-19). 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 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Chalmette, 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 Chalmette, 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.