Home / Waterloo / 8 September 2018
Waterloo
United States · 8 September 2018
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Average
17.8°C
low 15.8° · high 20.2°
Rainfall
89.3mm
rain recorded
Wind
5.9m/s
daily average
Humidity
93.6%
daily average
Cloud
100%
cover
Pressure
1016hPa
daily average
The temperature ranged from 15.8°C around 23:00 to 20.2°C around 00:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (89.3mm total).
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
53th 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 20.9°C, versus 17.8°C on this specific day.
Sun & daylight
Sunrise
07:19
Sunset
20:04
Day length
12h 45m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Indiana/Indianapolis.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 20.2 | 21 | 0.27 | 4.1 | NE | 98 | 1019 |
| 01:00 | 05:00 | 20 | 20.8 | 0.33 | 4.1 | NE | 99 | 1019 |
| 02:00 | 06:00 | 19.8 | 20.5 | 0.54 | 4 | NE | 99 | 1018 |
| 03:00 | 07:00 | 19.6 | 20.2 | 3.41 | 4.1 | NE | 99 | 1018 |
| 04:00 | 08:00 | 19.2 | 19.5 | 3.52 | 4.1 | NE | 98 | 1017 |
| 05:00 | 09:00 | 18.9 | 18.8 | 2.9 | 4.3 | NNE | 97 | 1017 |
| 06:00 | 10:00 | 17.5 | 16.5 | 2.34 | 4.8 | NNE | 96 | 1017 |
| 07:00 | 11:00 | 17.4 | 15.6 | 1.89 | 5.6 | NE | 95 | 1017 |
| 08:00 | 12:00 | 17.2 | 15.1 | 1.6 | 5.9 | NE | 93 | 1017 |
| 09:00 | 13:00 | 17.6 | 15.3 | 1.55 | 6.2 | ENE | 93 | 1017 |
| 10:00 | 14:00 | 17.8 | 15.6 | 1.84 | 6.2 | ENE | 92 | 1017 |
| 11:00 | 15:00 | 17.9 | 15.6 | 1.95 | 6.4 | ENE | 91 | 1017 |
| 12:00 | 16:00 | 18.1 | 15.7 | 2.12 | 6.7 | ENE | 92 | 1017 |
| 13:00 | 17:00 | 18.1 | 15.8 | 2.25 | 6.5 | ENE | 92 | 1017 |
| 14:00 | 18:00 | 17.7 | 15.4 | 2.22 | 6.4 | ENE | 93 | 1016 |
| 15:00 | 19:00 | 17.7 | 15.5 | 3.64 | 6.3 | ENE | 93 | 1016 |
| 16:00 | 20:00 | 17.3 | 14.9 | 3.39 | 6.4 | ENE | 93 | 1015 |
| 17:00 | 21:00 | 17.4 | 14.7 | 3.4 | 6.8 | ENE | 92 | 1014 |
| 18:00 | 22:00 | 16.4 | 13.2 | 4.3 | 6.8 | ENE | 90 | 1014 |
| 19:00 | 23:00 | 16.4 | 12.9 | 5.33 | 7.1 | ENE | 90 | 1013 |
| 20:00 | 00:00 | 16.3 | 12.8 | 6.9 | 7.1 | ENE | 90 | 1013 |
| 21:00 | 01:00 | 16.1 | 12.7 | 9.15 | 7 | ENE | 90 | 1013 |
| 22:00 | 02:00 | 16 | 12.7 | 12.18 | 6.9 | ENE | 91 | 1013 |
| 23:00 | 03:00 | 15.8 | 12.3 | 12.25 | 6.9 | ENE | 91 | 1013 |
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
- Waterloo — 39.500°, -86.250°, ERA5 grid cell center, 8.3 km from requested point
- Time zone
- America/Indiana/Indianapolis
- What's shown here
- The hourly and daily record for 8 September 2018 specifically — not a monthly average. See the Waterloo 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 (2026-07-16). Historical climate data for Waterloo, United States (39.50°N, 86.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Waterloo, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Waterloo, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Waterloo, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.