Home / Union / 7 September 2017
Union
United States · 7 September 2017
← 6 September 20178 September 2017 →
Average
14°C
low 8.9°C · high 19.4°C
Rainfall
0.4mm
dry day
Wind
3.7m/s
daily average
Humidity
70.8%
daily average
Cloud
47%
cover
Pressure
1017hPa
daily average
The temperature ranged from 8.9°C around 06:00 to 19.4°C around 15:00. Rain was recorded for one hour, around 13:00 (0.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
3th percentile
Low temperature
4th percentile
Rainfall
66th percentile
Wind
81th 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 21.1°C, versus 14°C on this specific day.
Sun & daylight
Sunrise
07:10
Sunset
19:58
Day length
12h 48m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 11°C | 9.3°C | 0 | 2.3 | WNW | 91 | 1016 |
| 01:00 | 05:00 | 10.6°C | 8.7°C | 0 | 2.6 | WNW | 92 | 1017 |
| 02:00 | 06:00 | 10.2°C | 8.1°C | 0 | 2.7 | WNW | 91 | 1017 |
| 03:00 | 07:00 | 9.9°C | 7.6°C | 0 | 2.8 | W | 91 | 1017 |
| 04:00 | 08:00 | 9.6°C | 7.1°C | 0 | 2.9 | W | 91 | 1017 |
| 05:00 | 09:00 | 9.6°C | 7.2°C | 0 | 2.8 | W | 90 | 1017 |
| 06:00 | 10:00 | 8.9°C | 6.5°C | 0 | 2.7 | W | 91 | 1017 |
| 07:00 | 11:00 | 9°C | 6.7°C | 0 | 2.5 | W | 91 | 1017 |
| 08:00 | 12:00 | 9.9°C | 7.3°C | 0 | 3.1 | W | 88 | 1018 |
| 09:00 | 13:00 | 11.5°C | 9.2°C | 0 | 3.1 | W | 87 | 1018 |
| 10:00 | 14:00 | 13.9°C | 11.4°C | 0 | 3.6 | W | 77 | 1018 |
| 11:00 | 15:00 | 17.1°C | 13.1°C | 0.04 | 5 | W | 55 | 1018 |
| 12:00 | 16:00 | 17.5°C | 13.5°C | 0.07 | 5.3 | WNW | 56 | 1018 |
| 13:00 | 17:00 | 18.7°C | 14.6°C | 0.12 | 5.1 | W | 49 | 1018 |
| 14:00 | 18:00 | 18.8°C | 14.4°C | 0.01 | 5.5 | W | 48 | 1018 |
| 15:00 | 19:00 | 19.4°C | 14.7°C | 0.08 | 5.8 | W | 46 | 1018 |
| 16:00 | 20:00 | 19.3°C | 14.4°C | 0.07 | 6 | W | 46 | 1017 |
| 17:00 | 21:00 | 18.9°C | 14°C | 0.03 | 6 | W | 47 | 1017 |
| 18:00 | 22:00 | 17.6°C | 13.5°C | 0 | 5.5 | W | 57 | 1017 |
| 19:00 | 23:00 | 17.6°C | 14.1°C | 0 | 4.3 | W | 53 | 1017 |
| 20:00 | 00:00 | 16.7°C | 13.7°C | 0 | 3.3 | W | 53 | 1018 |
| 21:00 | 01:00 | 15.5°C | 13.4°C | 0 | 2.1 | W | 57 | 1018 |
| 22:00 | 02:00 | 12.8°C | 11.1°C | 0 | 1.9 | WSW | 72 | 1019 |
| 23:00 | 03:00 | 12.1°C | 10.5°C | 0 | 2.1 | SW | 81 | 1019 |
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
- Union — 40.000°, -84.250°, ERA5 grid cell center, 12.3 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 7 September 2017 specifically — not a monthly average. See the Union 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 Union, United States (40.00°N, 84.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Union, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Union, 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 Union, 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.