Home / Lyons / 12 September 2017
Lyons
United States · 12 September 2017
← 11 September 201713 September 2017 →
Average
21.8°C
low 18.5°C · high 25.5°C
Rainfall
0.1mm
dry day
Wind
4.4m/s
daily average
Humidity
70.2%
daily average
Cloud
65%
cover
Pressure
1008hPa
daily average
The temperature ranged from 18.5°C around 08:00 to 25.5°C around 17:00. 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
4th percentile
Low temperature
13th percentile
Rainfall
42th percentile
Wind
91th 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 21.8°C on this specific day.
Sun & daylight
Sunrise
07:11
Sunset
19:38
Day length
12h 27m
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 | 22.1°C | 19.1°C | 0.01 | 6.8 | SSE | 66 | 1003 |
| 01:00 | 05:00 | 21.5°C | 18.4°C | 0.01 | 6.9 | SSE | 67 | 1003 |
| 02:00 | 06:00 | 21.1°C | 18.3°C | 0 | 6.3 | S | 69 | 1004 |
| 03:00 | 07:00 | 20.6°C | 18.1°C | 0 | 5.8 | S | 70 | 1004 |
| 04:00 | 08:00 | 20.4°C | 18°C | 0 | 5.5 | S | 71 | 1005 |
| 05:00 | 09:00 | 19.8°C | 17.4°C | 0 | 5.3 | S | 71 | 1005 |
| 06:00 | 10:00 | 18.6°C | 16.8°C | 0 | 4.5 | SSW | 75 | 1007 |
| 07:00 | 11:00 | 18.7°C | 17.1°C | 0 | 4.1 | SSW | 75 | 1007 |
| 08:00 | 12:00 | 18.5°C | 17.1°C | 0 | 4.1 | S | 77 | 1008 |
| 09:00 | 13:00 | 19.3°C | 18.3°C | 0 | 4 | S | 78 | 1009 |
| 10:00 | 14:00 | 21.3°C | 19.9°C | 0 | 4.9 | SSW | 73 | 1009 |
| 11:00 | 15:00 | 22.8°C | 19.9°C | 0 | 6.2 | SSW | 60 | 1009 |
| 12:00 | 16:00 | 23.3°C | 20.9°C | 0 | 5.8 | SSW | 60 | 1010 |
| 13:00 | 17:00 | 23.9°C | 21.6°C | 0 | 5.6 | SSW | 58 | 1010 |
| 14:00 | 18:00 | 24.7°C | 22.9°C | 0.01 | 5.5 | SSW | 59 | 1010 |
| 15:00 | 19:00 | 25.3°C | 23.9°C | 0.02 | 5.2 | SW | 58 | 1009 |
| 16:00 | 20:00 | 25.4°C | 24.6°C | 0.01 | 4.3 | SW | 59 | 1009 |
| 17:00 | 21:00 | 25.5°C | 25.8°C | 0 | 3.2 | SW | 60 | 1010 |
| 18:00 | 22:00 | 24.6°C | 25.9°C | 0 | 2.8 | WSW | 71 | 1010 |
| 19:00 | 23:00 | 23.9°C | 26.7°C | 0 | 0.7 | SW | 76 | 1011 |
| 20:00 | 00:00 | 22.7°C | 24.6°C | 0 | 1.1 | E | 74 | 1011 |
| 21:00 | 01:00 | 20.4°C | 21.4°C | 0 | 2.2 | E | 82 | 1011 |
| 22:00 | 02:00 | 19.9°C | 20.6°C | 0 | 2.5 | ESE | 85 | 1011 |
| 23:00 | 03:00 | 18.9°C | 19.6°C | 0 | 2.7 | ESE | 91 | 1012 |
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
- Lyons — 32.250°, -82.250°, ERA5 grid cell center, 8.4 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 12 September 2017 specifically — not a monthly average. See the Lyons 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 Lyons, United States (32.25°N, 82.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Lyons, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Lyons, 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 Lyons, 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.