Home / Ackerman / 21 August 2021
Ackerman
United States · 21 August 2021
← 20 August 202122 August 2021 →
Average
27.5°C
low 23.7° · high 31.5°
Rainfall
3.3mm
rain recorded
Wind
3m/s
daily average
Humidity
79.1%
daily average
Cloud
97%
cover
Pressure
1013hPa
daily average
The temperature ranged from 23.7°C around 05:00 to 31.5°C around 16:00. Rain was recorded across 6 hours, from around 07:00 to 22:00 (3.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
33th percentile
Low temperature
79th percentile
Rainfall
78th percentile
Wind
92th 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 26.9°C, versus 27.5°C on this specific day.
Sun & daylight
Sunrise
06:24
Sunset
19:35
Day length
13h 11m
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 | 24.7 | 28.3 | 0 | 2.9 | SW | 95 | 1013 |
| 01:00 | 06:00 | 24.6 | 28.3 | 0 | 2.8 | SW | 94 | 1013 |
| 02:00 | 07:00 | 24.6 | 28.3 | 0 | 2.6 | SW | 95 | 1013 |
| 03:00 | 08:00 | 24.5 | 28.2 | 0 | 2.6 | SW | 95 | 1013 |
| 04:00 | 09:00 | 24.3 | 28 | 0.01 | 2.6 | SW | 94 | 1013 |
| 05:00 | 10:00 | 23.7 | 26.2 | 0 | 3.1 | SW | 90 | 1013 |
| 06:00 | 11:00 | 24.1 | 26.6 | 0.01 | 3.1 | WSW | 89 | 1013 |
| 07:00 | 12:00 | 24.1 | 26.8 | 0.1 | 2.9 | WSW | 88 | 1014 |
| 08:00 | 13:00 | 25.2 | 28.3 | 0.05 | 2.8 | WSW | 85 | 1014 |
| 09:00 | 14:00 | 26.9 | 29.9 | 0.06 | 3.1 | WSW | 78 | 1014 |
| 10:00 | 15:00 | 29 | 31.9 | 0.09 | 3.3 | WSW | 70 | 1014 |
| 11:00 | 16:00 | 30 | 33.2 | 0.71 | 3.4 | W | 69 | 1015 |
| 12:00 | 17:00 | 30.4 | 33.9 | 0.49 | 3.8 | W | 71 | 1014 |
| 13:00 | 18:00 | 30.6 | 34 | 0.28 | 3.6 | W | 69 | 1014 |
| 14:00 | 19:00 | 31.2 | 34.4 | 0.9 | 3.8 | W | 65 | 1013 |
| 15:00 | 20:00 | 31.3 | 34.7 | 0 | 3.2 | W | 64 | 1013 |
| 16:00 | 21:00 | 31.5 | 34.3 | 0 | 3.7 | W | 61 | 1012 |
| 17:00 | 22:00 | 30.8 | 33.8 | 0.01 | 3.6 | WSW | 65 | 1013 |
| 18:00 | 23:00 | 30.2 | 33.3 | 0 | 3.2 | WSW | 66 | 1012 |
| 19:00 | 00:00 | 29.4 | 33.2 | 0 | 2.5 | WSW | 71 | 1012 |
| 20:00 | 01:00 | 28.4 | 32.4 | 0 | 2.4 | WSW | 76 | 1013 |
| 21:00 | 02:00 | 27.8 | 31.5 | 0.07 | 2.8 | SW | 79 | 1013 |
| 22:00 | 03:00 | 26.7 | 30.2 | 0.54 | 2.6 | SW | 82 | 1014 |
| 23:00 | 04:00 | 25.9 | 29.5 | 0 | 2.7 | WSW | 86 | 1014 |
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
- Ackerman — 33.250°, -89.250°, ERA5 grid cell center, 9.8 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 21 August 2021 specifically — not a monthly average. See the Ackerman 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 Ackerman, United States (33.25°N, 89.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ackerman, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ackerman, 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 Ackerman, 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.