Home / Frontenac / 8 September 2017
Frontenac
United States · 8 September 2017
← 7 September 20179 September 2017 →
Average
19.1°C
low 9.2° · high 27.9°
Rainfall
0mm
dry day
Wind
1.5m/s
daily average
Humidity
60.5%
daily average
Cloud
2%
cover
Pressure
1021hPa
daily average
The temperature ranged from 9.2°C around 07:00 to 27.9°C around 16:00. 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
50th percentile
Low temperature
4th percentile
Rainfall
53th percentile
Wind
13th 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 22.4°C, versus 19.1°C on this specific day.
Sun & daylight
Sunrise
06:37
Sunset
19:20
Day length
12h 43m
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 | 13.3 | 11.8 | 0 | 1.7 | SSE | 74 | 1020 |
| 01:00 | 06:00 | 13.5 | 12 | 0 | 1.8 | SSE | 74 | 1020 |
| 02:00 | 07:00 | 13.5 | 11.9 | 0 | 1.9 | S | 74 | 1020 |
| 03:00 | 08:00 | 12.9 | 11.4 | 0 | 1.8 | S | 78 | 1020 |
| 04:00 | 09:00 | 12.6 | 11.3 | 0 | 1.8 | S | 83 | 1020 |
| 05:00 | 10:00 | 10.6 | 9.5 | 0 | 1.6 | S | 95 | 1020 |
| 06:00 | 11:00 | 10.4 | 9.2 | 0 | 1.7 | SSE | 96 | 1021 |
| 07:00 | 12:00 | 9.2 | 7.8 | 0 | 1.6 | SSE | 99 | 1021 |
| 08:00 | 13:00 | 12.7 | 12.2 | 0 | 1.4 | S | 93 | 1022 |
| 09:00 | 14:00 | 16.3 | 16.5 | 0 | 0.9 | S | 78 | 1022 |
| 10:00 | 15:00 | 21.2 | 20.7 | 0 | 1 | S | 51 | 1023 |
| 11:00 | 16:00 | 23.9 | 23.1 | 0 | 1.4 | S | 44 | 1023 |
| 12:00 | 17:00 | 25.3 | 24.4 | 0 | 1.3 | S | 38 | 1022 |
| 13:00 | 18:00 | 26.1 | 25.6 | 0 | 0.9 | SSE | 37 | 1022 |
| 14:00 | 19:00 | 26.9 | 26.7 | 0 | 0.6 | ESE | 36 | 1021 |
| 15:00 | 20:00 | 27.3 | 27 | 0 | 0.7 | E | 35 | 1021 |
| 16:00 | 21:00 | 27.9 | 27.3 | 0 | 0.9 | E | 33 | 1020 |
| 17:00 | 22:00 | 27.4 | 27.5 | 0 | 1.4 | E | 42 | 1020 |
| 18:00 | 23:00 | 27 | 26.5 | 0 | 1.8 | E | 41 | 1020 |
| 19:00 | 00:00 | 23.9 | 22.9 | 0 | 1.9 | E | 44 | 1020 |
| 20:00 | 01:00 | 21.6 | 19.6 | 0 | 2.2 | E | 42 | 1021 |
| 21:00 | 02:00 | 20 | 18 | 0 | 2.1 | E | 45 | 1021 |
| 22:00 | 03:00 | 17.9 | 16.5 | 0 | 2 | ESE | 60 | 1022 |
| 23:00 | 04:00 | 17.7 | 16.5 | 0 | 1.8 | ESE | 61 | 1022 |
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 2017 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.