Home / Williamson / 28 February 2017
Williamson
United States · 28 February 2017
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Average
4°C
low -0.5° · high 8.3°
Rainfall
17mm
rain recorded
Wind
3.2m/s
daily average
Humidity
80.4%
daily average
Cloud
63%
cover
Pressure
1015hPa
daily average
The temperature ranged from -0.5°C around 22:00 to 8.3°C around 16:00. Rain was recorded across 11 hours, from around 00:00 to 10:00 (17mm total).
How unusual was this day?
Compared against the same 138 calendar days (±7 days) across the other 9 years on file.
High temperature
22th percentile
Low temperature
42th percentile
Rainfall
98th percentile
Wind
70th 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 6.4°C, versus 4°C on this specific day.
Sun & daylight
Sunrise
07:00
Sunset
18:25
Day length
11h 25m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Phoenix.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 07:00 | 4.3 | 0 | 1.35 | 4 | SSW | 93 | 1010 |
| 01:00 | 08:00 | 4.8 | 0.5 | 1.08 | 4.1 | SSW | 92 | 1010 |
| 02:00 | 09:00 | 4.5 | 0.1 | 1.47 | 4.3 | SSW | 97 | 1010 |
| 03:00 | 10:00 | 3.5 | -1 | 1.84 | 4.1 | SSW | 94 | 1009 |
| 04:00 | 11:00 | 3 | -1.6 | 2.16 | 4.2 | SSW | 96 | 1010 |
| 05:00 | 12:00 | 2.8 | -1.1 | 2.16 | 3.4 | SW | 98 | 1010 |
| 06:00 | 13:00 | 2.8 | -0.7 | 2.54 | 2.6 | SW | 96 | 1012 |
| 07:00 | 14:00 | 2.9 | -0.4 | 2.16 | 2.2 | SW | 94 | 1013 |
| 08:00 | 15:00 | 3.2 | 0.4 | 1.33 | 1.7 | SW | 92 | 1014 |
| 09:00 | 16:00 | 3 | 0.2 | 0.6 | 1.8 | SW | 97 | 1015 |
| 10:00 | 17:00 | 3.5 | 0.3 | 0.22 | 2.3 | SW | 95 | 1016 |
| 11:00 | 18:00 | 3.5 | -0.7 | 0.05 | 3.6 | WSW | 90 | 1015 |
| 12:00 | 19:00 | 5.1 | 0.1 | 0.02 | 4.6 | W | 75 | 1016 |
| 13:00 | 20:00 | 6.1 | 0.8 | 0 | 4.7 | W | 66 | 1016 |
| 14:00 | 21:00 | 7.4 | 2.2 | 0 | 4.6 | W | 61 | 1016 |
| 15:00 | 22:00 | 8.2 | 3.1 | 0 | 3.8 | W | 45 | 1015 |
| 16:00 | 23:00 | 8.3 | 3.4 | 0 | 3.6 | W | 45 | 1015 |
| 17:00 | 00:00 | 8.2 | 4 | 0 | 2.8 | W | 49 | 1015 |
| 18:00 | 01:00 | 6.1 | 2.2 | 0 | 2.3 | W | 56 | 1017 |
| 19:00 | 02:00 | 3.8 | -0.2 | 0 | 2.4 | W | 65 | 1018 |
| 20:00 | 03:00 | 1.5 | -2.3 | 0 | 2.2 | WNW | 78 | 1020 |
| 21:00 | 04:00 | 0.6 | -3.3 | 0 | 2.4 | NW | 83 | 1021 |
| 22:00 | 05:00 | -0.5 | -4.6 | 0 | 2.6 | NW | 86 | 1023 |
| 23:00 | 06:00 | -0.1 | -4.1 | 0 | 2.6 | NNW | 88 | 1024 |
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
- Williamson — 34.750°, -112.500°, ERA5 grid cell center, 7.7 km from requested point
- Time zone
- America/Phoenix
- What's shown here
- The hourly and daily record for 28 February 2017 specifically — not a monthly average. See the Williamson 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 Williamson, United States (34.75°N, 112.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Williamson, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Williamson, 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 Williamson, 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.