Home / Frontenac / 7 September 2018
Frontenac
United States · 7 September 2018
← 6 September 20188 September 2018 →
Average
23.7°C
low 21.8°C · high 26.6°C
Rainfall
20mm
rain recorded
Wind
2.8m/s
daily average
Humidity
91%
daily average
Cloud
98%
cover
Pressure
1018hPa
daily average
The temperature ranged from 21.8°C around 23:00 to 26.6°C around 16:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (20mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
39th percentile
Low temperature
93th percentile
Rainfall
97th percentile
Wind
70th 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 23.7°C on this specific day.
Sun & daylight
Sunrise
06:36
Sunset
19:22
Day length
12h 46m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 24°C | 26.8°C | 0.65 | 2.6 | ENE | 89 | 1020 |
| 01:00 | 06:00 | 24.3°C | 27.3°C | 0.18 | 2.5 | ENE | 88 | 1020 |
| 02:00 | 07:00 | 23.5°C | 26.4°C | 0.14 | 2.5 | NE | 90 | 1020 |
| 03:00 | 08:00 | 23.3°C | 25.9°C | 0.25 | 2.6 | ENE | 90 | 1020 |
| 04:00 | 09:00 | 23°C | 25.9°C | 0.68 | 2.5 | ENE | 93 | 1019 |
| 05:00 | 10:00 | 22.7°C | 25.8°C | 1.2 | 2.2 | ENE | 96 | 1019 |
| 06:00 | 11:00 | 22.6°C | 25.7°C | 1.26 | 2.1 | NE | 96 | 1019 |
| 07:00 | 12:00 | 22.6°C | 25.9°C | 1.3 | 1.8 | ENE | 95 | 1019 |
| 08:00 | 13:00 | 22.5°C | 25.7°C | 1.84 | 2 | ENE | 96 | 1019 |
| 09:00 | 14:00 | 22.9°C | 26°C | 2.03 | 2.2 | ENE | 95 | 1019 |
| 10:00 | 15:00 | 23.8°C | 27.3°C | 1.61 | 1.7 | ENE | 90 | 1019 |
| 11:00 | 16:00 | 24.2°C | 28.2°C | 1.08 | 1.6 | NE | 92 | 1019 |
| 12:00 | 17:00 | 24.5°C | 28.3°C | 0.63 | 1.9 | ENE | 91 | 1019 |
| 13:00 | 18:00 | 25.3°C | 29°C | 0.24 | 2.4 | ENE | 88 | 1018 |
| 14:00 | 19:00 | 25.6°C | 29.3°C | 0.74 | 2.2 | E | 85 | 1017 |
| 15:00 | 20:00 | 26.2°C | 29.9°C | 0.24 | 2.1 | ENE | 82 | 1017 |
| 16:00 | 21:00 | 26.6°C | 29.6°C | 1.09 | 2.9 | NE | 78 | 1016 |
| 17:00 | 22:00 | 24.9°C | 27.5°C | 0.21 | 3.8 | N | 89 | 1016 |
| 18:00 | 23:00 | 23.9°C | 25.3°C | 0.28 | 4.9 | NNE | 90 | 1016 |
| 19:00 | 00:00 | 23°C | 24.2°C | 0.52 | 4.6 | NNE | 91 | 1016 |
| 20:00 | 01:00 | 22.7°C | 24°C | 0.46 | 4.4 | NE | 92 | 1016 |
| 21:00 | 02:00 | 22.6°C | 24.3°C | 0.45 | 4 | NE | 94 | 1017 |
| 22:00 | 03:00 | 21.9°C | 23.5°C | 0.94 | 3.8 | NE | 96 | 1017 |
| 23:00 | 04:00 | 21.8°C | 23.4°C | 1.97 | 3.9 | NE | 97 | 1017 |
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
- 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 7 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Frontenac, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 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 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.