Home / Frontenac / 8 September 2018
Frontenac
United States · 8 September 2018
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Average
19.1°C
low 17.9° · high 21.7°
Rainfall
84.1mm
rain recorded
Wind
5.6m/s
daily average
Humidity
90%
daily average
Cloud
99%
cover
Pressure
1014hPa
daily average
The temperature ranged from 17.9°C around 10:00 to 21.7°C around 00:00. Rain was recorded across 15 hours, from around 00:00 to 14:00 (84.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
2th percentile
Low temperature
59th percentile
Rainfall
100th percentile
Wind
100th 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 22°C, versus 19.1°C on this specific day.
Sun & daylight
Sunrise
06:37
Sunset
19:21
Day length
12h 44m
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 | 21.7 | 23.4 | 2.22 | 3.9 | NE | 99 | 1016 |
| 01:00 | 06:00 | 21.5 | 22.8 | 2.5 | 4.5 | NE | 99 | 1016 |
| 02:00 | 07:00 | 21.3 | 22.4 | 3.29 | 4.7 | NE | 100 | 1015 |
| 03:00 | 08:00 | 20.9 | 21.6 | 3.72 | 5 | NNE | 100 | 1014 |
| 04:00 | 09:00 | 21 | 21.1 | 4.5 | 5.7 | NNE | 99 | 1014 |
| 05:00 | 10:00 | 19.2 | 19 | 5.87 | 4.9 | NE | 100 | 1013 |
| 06:00 | 11:00 | 19.1 | 18.9 | 6.99 | 5 | NE | 100 | 1013 |
| 07:00 | 12:00 | 18.7 | 17.9 | 6.85 | 5.4 | NE | 99 | 1013 |
| 08:00 | 13:00 | 18.4 | 17.2 | 6.58 | 5.8 | NE | 99 | 1013 |
| 09:00 | 14:00 | 17.9 | 16.9 | 8.15 | 5.3 | NNE | 99 | 1013 |
| 10:00 | 15:00 | 17.9 | 16.5 | 9.17 | 5.1 | NNE | 92 | 1013 |
| 11:00 | 16:00 | 17.9 | 16.3 | 9.9 | 5.6 | NNE | 92 | 1014 |
| 12:00 | 17:00 | 18.2 | 16.4 | 8.28 | 5.7 | NNE | 91 | 1013 |
| 13:00 | 18:00 | 17.9 | 15.6 | 5.9 | 6.6 | NNE | 92 | 1013 |
| 14:00 | 19:00 | 18 | 14.8 | 0.11 | 7.9 | NE | 93 | 1013 |
| 15:00 | 20:00 | 18 | 15.2 | 0.06 | 7.3 | NNE | 94 | 1013 |
| 16:00 | 21:00 | 18.6 | 15.8 | 0 | 7.4 | NNE | 90 | 1013 |
| 17:00 | 22:00 | 19.5 | 17.2 | 0 | 5.6 | NNE | 76 | 1013 |
| 18:00 | 23:00 | 19.3 | 16.9 | 0 | 5.5 | NNE | 75 | 1013 |
| 19:00 | 00:00 | 19.3 | 16.8 | 0 | 5.6 | NNE | 73 | 1013 |
| 20:00 | 01:00 | 19 | 16.5 | 0 | 5.4 | NE | 73 | 1014 |
| 21:00 | 02:00 | 18.8 | 16.3 | 0 | 5.4 | NNE | 73 | 1014 |
| 22:00 | 03:00 | 18.2 | 15.4 | 0 | 5.7 | NNE | 76 | 1014 |
| 23:00 | 04:00 | 18 | 15.5 | 0 | 5.2 | NNE | 76 | 1014 |
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
- Frontenac — 38.750°, -90.500°, ERA5 grid cell center, 14.7 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 8 September 2018 specifically — not a monthly average. See the Frontenac 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 Frontenac, United States (38.75°N, 90.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Frontenac, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Frontenac, 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 Frontenac, 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.