Home / Irwin / 8 September 2018
Irwin
United States · 8 September 2018
← 7 September 20189 September 2018 →
Average
17.1°C
low 12.9°C · high 21.3°C
Rainfall
22.2mm
rain recorded
Wind
3.5m/s
daily average
Humidity
90.9%
daily average
Cloud
100%
cover
Pressure
1020hPa
daily average
The temperature ranged from 12.9°C around 23:00 to 21.3°C around 00:00. Rain was recorded across 20 hours, from around 03:00 to 23:00 (22.2mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
11th percentile
Low temperature
35th percentile
Rainfall
97th percentile
Wind
89th 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 19.9°C, versus 17.1°C on this specific day.
Sun & daylight
Sunrise
06:53
Sunset
19:39
Day length
12h 46m
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 | 21.3°C | 23.8°C | 0.01 | 2.1 | NNE | 95 | 1020 |
| 01:00 | 05:00 | 20.6°C | 22.9°C | 0.01 | 2.2 | NNE | 97 | 1020 |
| 02:00 | 06:00 | 20.1°C | 22.1°C | 0.01 | 2.1 | NNE | 97 | 1019 |
| 03:00 | 07:00 | 20.2°C | 22.4°C | 0.76 | 2 | NNE | 97 | 1019 |
| 04:00 | 08:00 | 20°C | 22°C | 0.79 | 2.1 | NNE | 97 | 1019 |
| 05:00 | 09:00 | 19.7°C | 21.1°C | 0.83 | 2.7 | NE | 97 | 1018 |
| 06:00 | 10:00 | 19.3°C | 20.6°C | 0.85 | 2.5 | NNE | 96 | 1018 |
| 07:00 | 11:00 | 18.9°C | 19.5°C | 1.11 | 3.1 | NE | 94 | 1018 |
| 08:00 | 12:00 | 18.2°C | 18°C | 0.79 | 3.7 | NE | 93 | 1019 |
| 09:00 | 13:00 | 17.1°C | 16.2°C | 0.49 | 4.1 | NE | 93 | 1019 |
| 10:00 | 14:00 | 16.5°C | 15.2°C | 0.27 | 4.2 | NE | 92 | 1021 |
| 11:00 | 15:00 | 16.5°C | 14.8°C | 0.18 | 4.4 | ENE | 88 | 1021 |
| 12:00 | 16:00 | 16.5°C | 14.8°C | 0.16 | 4.4 | ENE | 85 | 1021 |
| 13:00 | 17:00 | 17°C | 15.1°C | 0.07 | 4.3 | ENE | 80 | 1020 |
| 14:00 | 18:00 | 17.2°C | 15.2°C | 0.18 | 4.3 | ENE | 77 | 1020 |
| 15:00 | 19:00 | 17.1°C | 14.9°C | 0.85 | 4.4 | NE | 76 | 1020 |
| 16:00 | 20:00 | 16.6°C | 14.2°C | 0.63 | 4.5 | ENE | 76 | 1020 |
| 17:00 | 21:00 | 16°C | 13.4°C | 1.21 | 4.5 | ENE | 76 | 1019 |
| 18:00 | 22:00 | 14.2°C | 12.8°C | 0.86 | 3.6 | ENE | 96 | 1020 |
| 19:00 | 23:00 | 14.1°C | 13°C | 1.36 | 3 | ENE | 96 | 1020 |
| 20:00 | 00:00 | 13.8°C | 12.6°C | 2.63 | 3 | NE | 96 | 1020 |
| 21:00 | 01:00 | 13.7°C | 12.3°C | 2.95 | 3.5 | NE | 95 | 1020 |
| 22:00 | 02:00 | 13.4°C | 11.4°C | 2.82 | 4.2 | ENE | 96 | 1021 |
| 23:00 | 03:00 | 12.9°C | 10.6°C | 2.34 | 4.3 | ENE | 97 | 1020 |
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
- Irwin — 40.250°, -79.750°, ERA5 grid cell center, 9.3 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 8 September 2018 specifically — not a monthly average. See the Irwin 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 Irwin, United States (40.25°N, 79.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Irwin, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Irwin, 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 Irwin, 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.