Home / Spring / 31 August 2021
Spring
United States · 31 August 2021
← 30 August 20211 September 2021 →
Average
29.4°C
low 25.2°C · high 34.6°C
Rainfall
0.9mm
dry day
Wind
2.3m/s
daily average
Humidity
74.7%
daily average
Cloud
67%
cover
Pressure
1008hPa
daily average
The temperature ranged from 25.2°C around 07:00 to 34.6°C around 16:00. Rain was recorded across 2 hours, from around 16:00 to 17:00 (0.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
71th percentile
Low temperature
82th percentile
Rainfall
44th percentile
Wind
58th 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 29.4°C on this specific day.
Sun & daylight
Sunrise
06:58
Sunset
19:45
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 | 27.6°C | 32°C | 0 | 1.8 | SSW | 80 | 1009 |
| 01:00 | 06:00 | 27.3°C | 31.7°C | 0 | 2.1 | SSW | 83 | 1009 |
| 02:00 | 07:00 | 27.4°C | 31.7°C | 0.01 | 2.4 | SSW | 82 | 1008 |
| 03:00 | 08:00 | 27.3°C | 31.3°C | 0 | 2.6 | SW | 83 | 1008 |
| 04:00 | 09:00 | 26.9°C | 30.7°C | 0 | 2.8 | SW | 84 | 1008 |
| 05:00 | 10:00 | 25.4°C | 29.1°C | 0 | 2.9 | WSW | 91 | 1008 |
| 06:00 | 11:00 | 25.2°C | 28.9°C | 0 | 2.8 | WSW | 91 | 1008 |
| 07:00 | 12:00 | 25.2°C | 28.8°C | 0 | 2.8 | WSW | 91 | 1008 |
| 08:00 | 13:00 | 25.7°C | 29.7°C | 0 | 2.7 | WSW | 91 | 1009 |
| 09:00 | 14:00 | 27.3°C | 31.5°C | 0 | 2.6 | W | 84 | 1009 |
| 10:00 | 15:00 | 30.6°C | 35.3°C | 0 | 2.2 | W | 71 | 1010 |
| 11:00 | 16:00 | 31.8°C | 36.6°C | 0 | 1.6 | W | 64 | 1010 |
| 12:00 | 17:00 | 32.8°C | 37.5°C | 0.02 | 1.4 | WSW | 59 | 1009 |
| 13:00 | 18:00 | 33.4°C | 37.8°C | 0.01 | 1.7 | SW | 57 | 1009 |
| 14:00 | 19:00 | 33.7°C | 37.9°C | 0.03 | 2 | SSW | 56 | 1008 |
| 15:00 | 20:00 | 34.2°C | 38.2°C | 0.02 | 2.2 | SSW | 55 | 1008 |
| 16:00 | 21:00 | 34.6°C | 38.6°C | 0.18 | 2.5 | SSW | 54 | 1007 |
| 17:00 | 22:00 | 33.3°C | 37.6°C | 0.64 | 1.6 | S | 56 | 1007 |
| 18:00 | 23:00 | 31.5°C | 35.5°C | 0 | 2.7 | S | 66 | 1006 |
| 19:00 | 00:00 | 30.6°C | 34.2°C | 0 | 3.7 | SSE | 71 | 1007 |
| 20:00 | 01:00 | 29.6°C | 34.1°C | 0 | 2.7 | SSE | 76 | 1007 |
| 21:00 | 02:00 | 29°C | 34°C | 0 | 1.8 | SSE | 79 | 1008 |
| 22:00 | 03:00 | 27.9°C | 33°C | 0 | 2 | S | 84 | 1008 |
| 23:00 | 04:00 | 27.4°C | 32.3°C | 0 | 2.2 | S | 87 | 1009 |
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
- Spring — 30.000°, -95.500°, ERA5 grid cell center, 11.9 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 31 August 2021 specifically — not a monthly average. See the Spring 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 Spring, United States (30.00°N, 95.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Spring, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Spring, 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 Spring, 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.