Home / Waterloo / 21 October 2019
Waterloo
United States · 21 October 2019
← 20 October 201922 October 2019 →
Average
11.1°C
low 4.3° · high 18.5°
Rainfall
0mm
dry day
Wind
2.7m/s
daily average
Humidity
80.2%
daily average
Cloud
59%
cover
Pressure
1017hPa
daily average
The temperature ranged from 4.3°C around 05:00 to 18.5°C around 17:00. 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
69th percentile
Low temperature
36th percentile
Rainfall
34th percentile
Wind
32th 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 10.7°C, versus 11.1°C on this specific day.
Sun & daylight
Sunrise
07:27
Sunset
18:15
Day length
10h 48m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
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 | 7.9 | 5.6 | 0 | 2.4 | S | 96 | 1016 |
| 01:00 | 05:00 | 7.4 | 5.1 | 0 | 2.2 | SSE | 96 | 1017 |
| 02:00 | 06:00 | 6.9 | 4.9 | 0 | 1.7 | SSE | 96 | 1017 |
| 03:00 | 07:00 | 6.5 | 4.5 | 0 | 1.6 | SE | 97 | 1017 |
| 04:00 | 08:00 | 4.4 | 2.1 | 0 | 1.3 | SE | 98 | 1018 |
| 05:00 | 09:00 | 4.3 | 1.9 | 0 | 1.5 | SE | 97 | 1018 |
| 06:00 | 10:00 | 4.8 | 2.3 | 0 | 1.8 | SE | 98 | 1019 |
| 07:00 | 11:00 | 5.4 | 2.9 | 0 | 2 | SE | 98 | 1019 |
| 08:00 | 12:00 | 5.4 | 3 | 0 | 1.8 | ESE | 98 | 1019 |
| 09:00 | 13:00 | 6.3 | 4.5 | 0 | 1.3 | SE | 98 | 1020 |
| 10:00 | 14:00 | 9.3 | 7.4 | 0 | 1.8 | E | 86 | 1020 |
| 11:00 | 15:00 | 11.8 | 9.8 | 0 | 2 | E | 75 | 1020 |
| 12:00 | 16:00 | 13.2 | 11.5 | 0 | 1.9 | ESE | 71 | 1020 |
| 13:00 | 17:00 | 16.3 | 14 | 0 | 2.7 | ESE | 59 | 1018 |
| 14:00 | 18:00 | 17.2 | 15.3 | 0 | 2.4 | ESE | 59 | 1017 |
| 15:00 | 19:00 | 17.8 | 15.9 | 0 | 2.5 | SE | 58 | 1017 |
| 16:00 | 20:00 | 18.3 | 16.1 | 0 | 3 | ESE | 56 | 1016 |
| 17:00 | 21:00 | 18.5 | 16.6 | 0 | 2.7 | ESE | 57 | 1016 |
| 18:00 | 22:00 | 15.5 | 13.4 | 0 | 3.2 | E | 70 | 1016 |
| 19:00 | 23:00 | 14.3 | 11.5 | 0 | 3.8 | ESE | 72 | 1016 |
| 20:00 | 00:00 | 13.4 | 10 | 0 | 4.5 | ESE | 74 | 1015 |
| 21:00 | 01:00 | 13.5 | 10 | 0 | 4.6 | SE | 74 | 1015 |
| 22:00 | 02:00 | 13.9 | 9.9 | 0 | 5.3 | SE | 72 | 1014 |
| 23:00 | 03:00 | 14.5 | 10.2 | 0 | 5.7 | SSE | 68 | 1014 |
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
- Waterloo — 43.000°, -76.750°, ERA5 grid cell center, 14.0 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 21 October 2019 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 (43.00°N, 76.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for 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.