Home / Williamson / 28 February 2018
Williamson
United States · 28 February 2018
← 27 February 20181 March 2018 →
Average
3.9°C
low -0.2° · high 9.8°
Rainfall
1.9mm
rain recorded
Wind
1.9m/s
daily average
Humidity
59.5%
daily average
Cloud
61%
cover
Pressure
1018hPa
daily average
The temperature ranged from -0.2°C around 04:00 to 9.8°C around 16:00. Rain was recorded across 9 hours, from around 00:00 to 08:00 (1.9mm total).
How unusual was this day?
Compared against the same 138 calendar days (±7 days) across the other 9 years on file.
High temperature
27th percentile
Low temperature
41th percentile
Rainfall
86th percentile
Wind
30th 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 6.6°C, versus 3.9°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 | 1.1 | -1.7 | 0.22 | 1.1 | SW | 90 | 1016 |
| 01:00 | 08:00 | 1.3 | -1.5 | 0.18 | 1 | WSW | 85 | 1016 |
| 02:00 | 09:00 | 1.4 | -1.4 | 0.2 | 1 | WSW | 83 | 1016 |
| 03:00 | 10:00 | 0.3 | -2.8 | 0.22 | 1.2 | W | 86 | 1018 |
| 04:00 | 11:00 | -0.2 | -3.3 | 0.23 | 1.3 | W | 88 | 1017 |
| 05:00 | 12:00 | 0 | -3 | 0.24 | 1 | W | 85 | 1017 |
| 06:00 | 13:00 | 0.3 | -2.8 | 0.23 | 1.1 | WSW | 83 | 1018 |
| 07:00 | 14:00 | 0.6 | -2.8 | 0.19 | 1.6 | W | 82 | 1019 |
| 08:00 | 15:00 | 1.2 | -1.9 | 0.14 | 1 | W | 76 | 1020 |
| 09:00 | 16:00 | 2 | -2 | 0.06 | 2.2 | W | 70 | 1020 |
| 10:00 | 17:00 | 3.3 | -0.7 | 0.02 | 2.1 | WNW | 56 | 1020 |
| 11:00 | 18:00 | 5.4 | 1.3 | 0 | 2.1 | NW | 45 | 1019 |
| 12:00 | 19:00 | 7.2 | 2.7 | 0 | 2.6 | NW | 40 | 1018 |
| 13:00 | 20:00 | 8.6 | 3.9 | 0 | 2.8 | NW | 35 | 1017 |
| 14:00 | 21:00 | 9.4 | 4.5 | 0 | 3 | WNW | 31 | 1016 |
| 15:00 | 22:00 | 9.5 | 5.1 | 0 | 2.4 | W | 32 | 1017 |
| 16:00 | 23:00 | 9.8 | 5 | 0 | 2.9 | WNW | 30 | 1017 |
| 17:00 | 00:00 | 9.2 | 4.4 | 0 | 2.8 | WNW | 29 | 1017 |
| 18:00 | 01:00 | 8.7 | 4.3 | 0 | 2.3 | W | 30 | 1018 |
| 19:00 | 02:00 | 5.8 | 1.5 | 0 | 2.1 | WSW | 40 | 1019 |
| 20:00 | 03:00 | 3.1 | -1.1 | 0 | 2 | SW | 49 | 1020 |
| 21:00 | 04:00 | 2.3 | -2 | 0 | 2.2 | SSW | 56 | 1021 |
| 22:00 | 05:00 | 1.5 | -2.8 | 0 | 2.4 | SSW | 60 | 1022 |
| 23:00 | 06:00 | 1.2 | -2.9 | 0 | 2.3 | S | 67 | 1023 |
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 2018 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.