Home / Whetstone / 12 September 2017
Whetstone
United States · 12 September 2017
← 11 September 201713 September 2017 →
Average
28°C
low 21.4°C · high 34.6°C
Rainfall
0mm
dry day
Wind
2m/s
daily average
Humidity
28%
daily average
Cloud
22%
cover
Pressure
1012hPa
daily average
The temperature ranged from 21.4°C around 07:00 to 34.6°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
96th percentile
Low temperature
96th percentile
Rainfall
59th percentile
Wind
40th 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 24.3°C, versus 28°C on this specific day.
Sun & daylight
Sunrise
06:03
Sunset
18:30
Day length
12h 27m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Phoenix.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 07:00 | 23.8°C | 21.9°C | 0 | 2.7 | ESE | 41 | 1014 |
| 01:00 | 08:00 | 23.8°C | 22.2°C | 0 | 2.6 | ESE | 43 | 1014 |
| 02:00 | 09:00 | 23.1°C | 21.8°C | 0 | 2.2 | ESE | 46 | 1014 |
| 03:00 | 10:00 | 21.9°C | 20.2°C | 0 | 1.7 | SE | 41 | 1014 |
| 04:00 | 11:00 | 22°C | 20.9°C | 0 | 0.8 | SE | 40 | 1014 |
| 05:00 | 12:00 | 21.7°C | 20.8°C | 0 | 0.4 | ESE | 40 | 1014 |
| 06:00 | 13:00 | 21.5°C | 20.5°C | 0 | 0.6 | E | 40 | 1015 |
| 07:00 | 14:00 | 21.4°C | 20.3°C | 0 | 0.8 | ENE | 41 | 1015 |
| 08:00 | 15:00 | 26°C | 24.6°C | 0 | 1.1 | ENE | 31 | 1015 |
| 09:00 | 16:00 | 29.1°C | 27.4°C | 0 | 1.9 | E | 27 | 1015 |
| 10:00 | 17:00 | 31.2°C | 29.1°C | 0 | 2.4 | E | 23 | 1014 |
| 11:00 | 18:00 | 32°C | 29.7°C | 0 | 2.7 | E | 23 | 1013 |
| 12:00 | 19:00 | 32°C | 29.4°C | 0 | 2.7 | E | 21 | 1012 |
| 13:00 | 20:00 | 33.8°C | 31.1°C | 0 | 2.4 | E | 17 | 1011 |
| 14:00 | 21:00 | 34.3°C | 31.8°C | 0 | 2.1 | E | 16 | 1010 |
| 15:00 | 22:00 | 34.5°C | 31.7°C | 0 | 2.4 | E | 16 | 1009 |
| 16:00 | 23:00 | 34.6°C | 31.8°C | 0 | 2.5 | ESE | 16 | 1009 |
| 17:00 | 00:00 | 34.2°C | 31.1°C | 0 | 2.4 | SE | 15 | 1008 |
| 18:00 | 01:00 | 33.8°C | 30.9°C | 0 | 1.7 | SE | 13 | 1008 |
| 19:00 | 02:00 | 31.3°C | 27.8°C | 0 | 2.4 | SSE | 15 | 1008 |
| 20:00 | 03:00 | 27.9°C | 25.2°C | 0 | 1.9 | SW | 21 | 1009 |
| 21:00 | 04:00 | 27.5°C | 24.8°C | 0 | 2.1 | W | 23 | 1010 |
| 22:00 | 05:00 | 25.5°C | 23°C | 0 | 2.4 | WNW | 29 | 1011 |
| 23:00 | 06:00 | 24.4°C | 22.2°C | 0 | 2.2 | WNW | 33 | 1011 |
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
- Whetstone — 31.750°, -110.250°, ERA5 grid cell center, 11.4 km from requested point
- Time zone
- America/Phoenix
- What's shown here
- The hourly and daily record for 12 September 2017 specifically — not a monthly average. See the Whetstone 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 Whetstone, United States (31.75°N, 110.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Whetstone, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Whetstone, 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 Whetstone, 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.