Home / Roby / 8 September 2017
Roby
United States · 8 September 2017
← 7 September 20179 September 2017 →
Average
22.7°C
low 14.9° · high 29.8°
Rainfall
0mm
dry day
Wind
4.4m/s
daily average
Humidity
39.9%
daily average
Cloud
2%
cover
Pressure
1018hPa
daily average
The temperature ranged from 14.9°C around 05:00 to 29.8°C around 16:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
29th percentile
Low temperature
5th percentile
Rainfall
53th percentile
Wind
67th 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°C, versus 22.7°C on this specific day.
Sun & daylight
Sunrise
07:21
Sunset
19:57
Day length
12h 36m
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 | 19.7 | 15.5 | 0 | 4.5 | SSE | 40 | 1018 |
| 01:00 | 06:00 | 19.4 | 15.4 | 0 | 4.2 | SSE | 39 | 1018 |
| 02:00 | 07:00 | 19 | 15.1 | 0 | 4.1 | SSE | 41 | 1018 |
| 03:00 | 08:00 | 18.2 | 14.2 | 0 | 4.3 | SSE | 44 | 1018 |
| 04:00 | 09:00 | 17.7 | 13.7 | 0 | 4.6 | S | 48 | 1018 |
| 05:00 | 10:00 | 14.9 | 10.9 | 0 | 4.5 | S | 57 | 1019 |
| 06:00 | 11:00 | 14.9 | 11.3 | 0 | 4.2 | S | 58 | 1019 |
| 07:00 | 12:00 | 14.9 | 11.3 | 0 | 4.1 | S | 59 | 1019 |
| 08:00 | 13:00 | 15 | 11.3 | 0 | 4.4 | S | 60 | 1020 |
| 09:00 | 14:00 | 18.2 | 14.9 | 0 | 4.7 | S | 58 | 1020 |
| 10:00 | 15:00 | 24.1 | 20 | 0 | 4.9 | S | 34 | 1020 |
| 11:00 | 16:00 | 26.2 | 22.2 | 0 | 5.1 | SSE | 32 | 1020 |
| 12:00 | 17:00 | 27.2 | 23.5 | 0 | 4.8 | SSE | 30 | 1020 |
| 13:00 | 18:00 | 27.9 | 24.5 | 0 | 4.4 | SSE | 30 | 1019 |
| 14:00 | 19:00 | 28.2 | 25 | 0 | 4.4 | SSE | 30 | 1019 |
| 15:00 | 20:00 | 28.5 | 25.1 | 0 | 4.5 | SE | 29 | 1018 |
| 16:00 | 21:00 | 29.8 | 26.2 | 0 | 4.5 | SE | 26 | 1017 |
| 17:00 | 22:00 | 29.2 | 25.3 | 0 | 5 | SE | 27 | 1016 |
| 18:00 | 23:00 | 28.9 | 25.1 | 0 | 4.8 | SE | 27 | 1016 |
| 19:00 | 00:00 | 28.4 | 24.9 | 0 | 4.4 | SE | 28 | 1016 |
| 20:00 | 01:00 | 27.1 | 24.3 | 0 | 3.2 | ESE | 30 | 1016 |
| 21:00 | 02:00 | 25.6 | 22.6 | 0 | 3.6 | ESE | 32 | 1017 |
| 22:00 | 03:00 | 20.8 | 18.1 | 0 | 3.9 | ESE | 50 | 1018 |
| 23:00 | 04:00 | 20.1 | 17.1 | 0 | 4 | ESE | 49 | 1019 |
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 8 September 2017 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roby, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 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 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.