Home / Roby / 7 September 2018
Roby
United States · 7 September 2018
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Average
22.3°C
low 20.9°C · high 24°C
Rainfall
16.1mm
rain recorded
Wind
3.2m/s
daily average
Humidity
90%
daily average
Cloud
99%
cover
Pressure
1017hPa
daily average
The temperature ranged from 20.9°C around 17:00 to 24°C around 14:00. Rain was recorded across 18 hours, from around 06:00 to 23:00 (16.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
4th percentile
Low temperature
52th percentile
Rainfall
96th percentile
Wind
41th 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 26.2°C, versus 22.3°C on this specific day.
Sun & daylight
Sunrise
07:20
Sunset
19:58
Day length
12h 38m
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 | 22.5°C | 25.3°C | 0.01 | 2 | SSE | 91 | 1018 |
| 01:00 | 06:00 | 22.2°C | 25.5°C | 0.01 | 1.4 | SSE | 94 | 1018 |
| 02:00 | 07:00 | 22°C | 25.7°C | 0 | 0.5 | SW | 94 | 1018 |
| 03:00 | 08:00 | 22.3°C | 25.6°C | 0 | 1 | NNW | 92 | 1017 |
| 04:00 | 09:00 | 22°C | 24.8°C | 0 | 1.5 | NNW | 91 | 1017 |
| 05:00 | 10:00 | 23.1°C | 24.8°C | 0 | 3.1 | NW | 85 | 1017 |
| 06:00 | 11:00 | 22.8°C | 25°C | 0.18 | 2.4 | NNW | 88 | 1018 |
| 07:00 | 12:00 | 22.2°C | 23.9°C | 0.63 | 2.4 | NNE | 84 | 1017 |
| 08:00 | 13:00 | 21.7°C | 23°C | 1.24 | 3.1 | NNE | 89 | 1017 |
| 09:00 | 14:00 | 22.3°C | 24°C | 0.29 | 3.4 | NNE | 90 | 1017 |
| 10:00 | 15:00 | 23.2°C | 24.3°C | 0.43 | 4 | NNE | 84 | 1018 |
| 11:00 | 16:00 | 23.6°C | 24.4°C | 0.32 | 4.6 | NE | 84 | 1018 |
| 12:00 | 17:00 | 23.9°C | 25.3°C | 0.39 | 4.2 | NE | 84 | 1018 |
| 13:00 | 18:00 | 23.8°C | 26.2°C | 0.78 | 3 | NE | 88 | 1017 |
| 14:00 | 19:00 | 24°C | 26.3°C | 0.93 | 3.4 | NNE | 88 | 1017 |
| 15:00 | 20:00 | 23.4°C | 24.9°C | 3.37 | 4 | NNE | 88 | 1016 |
| 16:00 | 21:00 | 22.2°C | 22.9°C | 3.33 | 4.2 | NNE | 87 | 1016 |
| 17:00 | 22:00 | 20.9°C | 20.9°C | 2.07 | 5.3 | NNE | 95 | 1016 |
| 18:00 | 23:00 | 21.1°C | 21.2°C | 0.88 | 5.3 | NNE | 95 | 1016 |
| 19:00 | 00:00 | 21.2°C | 21.6°C | 0.24 | 4.9 | NE | 94 | 1016 |
| 20:00 | 01:00 | 21.2°C | 22.3°C | 0.18 | 3.7 | NE | 93 | 1016 |
| 21:00 | 02:00 | 21.2°C | 22.8°C | 0.14 | 3 | NE | 94 | 1016 |
| 22:00 | 03:00 | 21°C | 22.2°C | 0.42 | 3.8 | NE | 96 | 1017 |
| 23:00 | 04:00 | 21.1°C | 22.9°C | 0.29 | 2.9 | NNE | 95 | 1017 |
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
- Roby — 32.750°, -100.500°, ERA5 grid cell center, 11.5 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 7 September 2018 specifically — not a monthly average. See the Roby 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 (2026-07-21). Historical climate data for Roby, United States (32.75°N, 100.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Roby, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roby, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Roby, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.