Home / Old Jefferson / 13 August 2021
Old Jefferson
United States · 13 August 2021
← 12 August 202114 August 2021 →
Average
26.6°C
low 22.4° · high 31.4°
Rainfall
3.7mm
rain recorded
Wind
1.4m/s
daily average
Humidity
83.3%
daily average
Cloud
77%
cover
Pressure
1020hPa
daily average
The temperature ranged from 22.4°C around 05:00 to 31.4°C around 12:00. Rain was recorded across 2 hours, from around 14:00 to 15:00 (3.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
21th percentile
Low temperature
5th percentile
Rainfall
58th percentile
Wind
23th 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 28.3°C, versus 26.6°C on this specific day.
Sun & daylight
Sunrise
06:29
Sunset
19:47
Day length
13h 18m
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 | 23.7 | 27.7 | 0 | 1.4 | SSE | 94 | 1019 |
| 01:00 | 06:00 | 23.6 | 27.5 | 0 | 1.6 | SE | 95 | 1019 |
| 02:00 | 07:00 | 24.2 | 28.5 | 0 | 1.5 | ESE | 93 | 1019 |
| 03:00 | 08:00 | 24 | 28.6 | 0 | 1 | ENE | 94 | 1019 |
| 04:00 | 09:00 | 23.5 | 27.8 | 0 | 1.1 | ENE | 95 | 1019 |
| 05:00 | 10:00 | 22.4 | 26.5 | 0 | 1 | NE | 99 | 1020 |
| 06:00 | 11:00 | 22.6 | 26.2 | 0 | 1.8 | NE | 99 | 1020 |
| 07:00 | 12:00 | 23 | 26.7 | 0 | 2 | ENE | 98 | 1020 |
| 08:00 | 13:00 | 24.5 | 29.3 | 0 | 1.1 | ENE | 94 | 1021 |
| 09:00 | 14:00 | 26.8 | 31.8 | 0 | 1.1 | ENE | 85 | 1021 |
| 10:00 | 15:00 | 29 | 33.6 | 0.02 | 1.4 | ESE | 72 | 1021 |
| 11:00 | 16:00 | 30.3 | 35 | 0.01 | 1.2 | SE | 68 | 1021 |
| 12:00 | 17:00 | 31.4 | 36.5 | 0.04 | 0.8 | SE | 64 | 1021 |
| 13:00 | 18:00 | 30.3 | 34.5 | 0.06 | 1.7 | S | 67 | 1020 |
| 14:00 | 19:00 | 30.2 | 34.9 | 3.24 | 1.2 | SSE | 67 | 1021 |
| 15:00 | 20:00 | 30.3 | 34.6 | 0.31 | 1.6 | SSE | 67 | 1020 |
| 16:00 | 21:00 | 30 | 35.1 | 0 | 1.1 | SSE | 71 | 1019 |
| 17:00 | 22:00 | 29.4 | 33.7 | 0.01 | 1.8 | ESE | 71 | 1018 |
| 18:00 | 23:00 | 29.6 | 34.4 | 0 | 1.7 | SSE | 73 | 1019 |
| 19:00 | 00:00 | 28.9 | 33.9 | 0 | 1.3 | SSE | 75 | 1019 |
| 20:00 | 01:00 | 27.1 | 31.6 | 0 | 1.8 | SSE | 83 | 1018 |
| 21:00 | 02:00 | 25.8 | 30.3 | 0 | 1.6 | SSE | 88 | 1019 |
| 22:00 | 03:00 | 24 | 28.2 | 0 | 1.7 | S | 95 | 1020 |
| 23:00 | 04:00 | 24.1 | 28.4 | 0 | 1.4 | S | 94 | 1020 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Old Jefferson — 30.500°, -91.000°, ERA5 grid cell center, 13.1 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 13 August 2021 specifically — not a monthly average. See the Old Jefferson 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 (2026-07-16). Historical climate data for Old Jefferson, United States (30.50°N, 91.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Old Jefferson, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Old Jefferson, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Old Jefferson, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.