Home / Decatur / 20 September 2018
Decatur
United States · 20 September 2018
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Average
26.4°C
low 23.1° · high 31.8°
Rainfall
4.7mm
rain recorded
Wind
3.3m/s
daily average
Humidity
77%
daily average
Cloud
35%
cover
Pressure
1013hPa
daily average
The temperature ranged from 23.1°C around 07:00 to 31.8°C around 16:00. Rain was recorded across 3 hours, from around 16:00 to 18:00 (4.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
37th percentile
Low temperature
77th percentile
Rainfall
95th percentile
Wind
70th 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 26.3°C, versus 26.4°C on this specific day.
Sun & daylight
Sunrise
07:16
Sunset
19:29
Day length
12h 13m
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 | 25.7 | 28.4 | 0 | 3.4 | S | 83 | 1013 |
| 01:00 | 06:00 | 25 | 27.2 | 0 | 3.5 | S | 82 | 1013 |
| 02:00 | 07:00 | 24.8 | 26.8 | 0 | 3.4 | S | 82 | 1012 |
| 03:00 | 08:00 | 24.3 | 26.4 | 0 | 3.3 | S | 84 | 1012 |
| 04:00 | 09:00 | 24.4 | 26.8 | 0 | 3.4 | S | 88 | 1012 |
| 05:00 | 10:00 | 23.4 | 25.7 | 0 | 2.7 | SSW | 86 | 1013 |
| 06:00 | 11:00 | 23.4 | 25.9 | 0 | 2.4 | S | 87 | 1012 |
| 07:00 | 12:00 | 23.1 | 25.6 | 0 | 2.4 | S | 88 | 1013 |
| 08:00 | 13:00 | 23.3 | 25.8 | 0 | 2.5 | S | 88 | 1013 |
| 09:00 | 14:00 | 25.1 | 28.6 | 0 | 2 | S | 85 | 1014 |
| 10:00 | 15:00 | 27.4 | 30.1 | 0 | 2.3 | S | 69 | 1014 |
| 11:00 | 16:00 | 29.1 | 31.9 | 0 | 2.6 | SSW | 65 | 1014 |
| 12:00 | 17:00 | 30.3 | 32.3 | 0.01 | 3.4 | S | 59 | 1014 |
| 13:00 | 18:00 | 31 | 32.6 | 0 | 3.8 | S | 56 | 1013 |
| 14:00 | 19:00 | 31.2 | 32.6 | 0.01 | 4.2 | S | 55 | 1012 |
| 15:00 | 20:00 | 31.5 | 32.8 | 0.01 | 4.5 | SSE | 55 | 1012 |
| 16:00 | 21:00 | 31.8 | 33.1 | 3.14 | 4.6 | SSE | 55 | 1011 |
| 17:00 | 22:00 | 28.6 | 33.1 | 1.39 | 3.1 | S | 83 | 1011 |
| 18:00 | 23:00 | 27.8 | 31.6 | 0.1 | 3.5 | S | 83 | 1012 |
| 19:00 | 00:00 | 25.6 | 28 | 0 | 3.4 | SSE | 81 | 1011 |
| 20:00 | 01:00 | 25.2 | 27.4 | 0 | 3.1 | SSE | 79 | 1012 |
| 21:00 | 02:00 | 24.7 | 26.3 | 0 | 3.7 | SSE | 81 | 1012 |
| 22:00 | 03:00 | 24 | 25.9 | 0 | 3.8 | SSE | 86 | 1013 |
| 23:00 | 04:00 | 23.6 | 25.2 | 0 | 3.8 | SSE | 86 | 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
- Decatur — 33.250°, -97.500°, ERA5 grid cell center, 8.2 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 20 September 2018 specifically — not a monthly average. See the Decatur 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 Decatur, United States (33.25°N, 97.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Decatur, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Decatur, 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 Decatur, 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.