Home / Waterloo / 1 August 2017
Waterloo
United States · 1 August 2017
Average
22.5°C
low 15.4° · high 29.2°
Rainfall
0mm
dry day
Wind
1.7m/s
daily average
Humidity
72.2%
daily average
Cloud
17%
cover
Pressure
1018hPa
daily average
The temperature ranged from 15.4°C around 06:00 to 29.2°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
73th percentile
Low temperature
19th percentile
Rainfall
43th percentile
Wind
9th 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 22.8°C, versus 22.5°C on this specific day.
Sun & daylight
Sunrise
06:01
Sunset
20:28
Day length
14h 27m
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 | 17.7 | 18.1 | 0 | 2.3 | ESE | 90 | 1020 |
| 01:00 | 06:00 | 17.3 | 17.8 | 0 | 2 | SE | 92 | 1020 |
| 02:00 | 07:00 | 17.1 | 17.8 | 0 | 1.8 | SE | 92 | 1019 |
| 03:00 | 08:00 | 16.6 | 17 | 0 | 1.8 | SSE | 92 | 1019 |
| 04:00 | 09:00 | 16.1 | 16.4 | 0 | 1.8 | SSE | 93 | 1019 |
| 05:00 | 10:00 | 15.6 | 15.2 | 0 | 2.4 | SSE | 92 | 1019 |
| 06:00 | 11:00 | 15.4 | 15.2 | 0 | 2.2 | SSE | 92 | 1019 |
| 07:00 | 12:00 | 16.3 | 16.8 | 0 | 1.5 | SE | 90 | 1019 |
| 08:00 | 13:00 | 18.4 | 20.1 | 0 | 0.7 | S | 89 | 1019 |
| 09:00 | 14:00 | 20.5 | 22.8 | 0 | 1 | SSE | 87 | 1019 |
| 10:00 | 15:00 | 25.5 | 26.7 | 0 | 1.2 | S | 56 | 1019 |
| 11:00 | 16:00 | 26.9 | 28.2 | 0 | 1.2 | SSW | 52 | 1019 |
| 12:00 | 17:00 | 27.7 | 28.6 | 0 | 1.5 | WSW | 48 | 1018 |
| 13:00 | 18:00 | 28.2 | 28.9 | 0 | 1.9 | WSW | 48 | 1018 |
| 14:00 | 19:00 | 28.6 | 29.3 | 0 | 2.1 | W | 47 | 1017 |
| 15:00 | 20:00 | 28.9 | 29.4 | 0 | 2.2 | W | 47 | 1017 |
| 16:00 | 21:00 | 29.2 | 29.9 | 0 | 2.3 | W | 47 | 1016 |
| 17:00 | 22:00 | 27.9 | 29.6 | 0 | 1.9 | W | 56 | 1016 |
| 18:00 | 23:00 | 27.5 | 29.4 | 0 | 1.4 | WSW | 57 | 1016 |
| 19:00 | 00:00 | 26.9 | 29.3 | 0 | 1.1 | W | 61 | 1016 |
| 20:00 | 01:00 | 25.4 | 27.3 | 0 | 1.9 | WSW | 67 | 1016 |
| 21:00 | 02:00 | 24.6 | 26.2 | 0 | 1.5 | SSW | 65 | 1016 |
| 22:00 | 03:00 | 21.6 | 23.6 | 0 | 1.6 | S | 84 | 1016 |
| 23:00 | 04:00 | 19.8 | 21.2 | 0 | 1.8 | S | 87 | 1016 |
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 — 42.500°, -92.250°, ERA5 grid cell center, 7.7 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 1 August 2017 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 (2026-07-18). Historical climate data for Waterloo, United States (42.50°N, 92.25°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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Waterloo, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 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 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.