Home / Williamson / 4 March 2017
Williamson
United States · 4 March 2017
Average
9.4°C
low 1.6°C · high 16.6°C
Rainfall
0mm
dry day
Wind
3.5m/s
daily average
Humidity
48.2%
daily average
Cloud
64%
cover
Pressure
1016hPa
daily average
The temperature ranged from 1.6°C around 04:00 to 16.6°C around 14:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 138 calendar days (±7 days) across the other 9 years on file.
High temperature
70th percentile
Low temperature
54th percentile
Rainfall
69th percentile
Wind
76th 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 7.2°C, versus 9.4°C on this specific day.
Sun & daylight
Sunrise
06:54
Sunset
18:28
Day length
11h 34m
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 | 5.1°C | 1°C | 0 | 2.9 | SSE | 68 | 1018 |
| 01:00 | 08:00 | 4.9°C | 0.9°C | 0 | 3 | SSE | 71 | 1018 |
| 02:00 | 09:00 | 4.7°C | 0.7°C | 0 | 2.9 | S | 70 | 1017 |
| 03:00 | 10:00 | 1.8°C | -2.6°C | 0 | 3 | SSE | 73 | 1016 |
| 04:00 | 11:00 | 1.6°C | -2.5°C | 0 | 2.5 | S | 74 | 1016 |
| 05:00 | 12:00 | 1.6°C | -2.6°C | 0 | 2.7 | S | 74 | 1016 |
| 06:00 | 13:00 | 1.9°C | -2.7°C | 0 | 3.2 | SSE | 72 | 1016 |
| 07:00 | 14:00 | 2.3°C | -2.4°C | 0 | 3.3 | SSE | 68 | 1017 |
| 08:00 | 15:00 | 4.6°C | 0.7°C | 0 | 2.2 | SSE | 60 | 1017 |
| 09:00 | 16:00 | 10.3°C | 6.2°C | 0 | 2.7 | SSE | 44 | 1018 |
| 10:00 | 17:00 | 13.1°C | 8.5°C | 0 | 3.3 | SSE | 34 | 1018 |
| 11:00 | 18:00 | 14.4°C | 9.2°C | 0 | 4.1 | S | 30 | 1018 |
| 12:00 | 19:00 | 15.3°C | 9.4°C | 0 | 5 | S | 27 | 1017 |
| 13:00 | 20:00 | 16°C | 9.5°C | 0 | 5.6 | SSW | 23 | 1016 |
| 14:00 | 21:00 | 16.6°C | 9.8°C | 0 | 5.8 | SSW | 20 | 1015 |
| 15:00 | 22:00 | 16.2°C | 9.9°C | 0 | 5.3 | SSW | 23 | 1014 |
| 16:00 | 23:00 | 15.7°C | 9.3°C | 0 | 5.4 | SSW | 24 | 1014 |
| 17:00 | 00:00 | 14.8°C | 9.1°C | 0 | 4.5 | SSW | 27 | 1014 |
| 18:00 | 01:00 | 13.7°C | 9.1°C | 0 | 3.3 | SSW | 32 | 1015 |
| 19:00 | 02:00 | 12.8°C | 8.8°C | 0 | 2.7 | S | 39 | 1015 |
| 20:00 | 03:00 | 10.6°C | 6.8°C | 0 | 2.5 | S | 45 | 1015 |
| 21:00 | 04:00 | 9.5°C | 5.7°C | 0 | 2.7 | S | 54 | 1015 |
| 22:00 | 05:00 | 8.9°C | 5°C | 0 | 2.8 | S | 54 | 1015 |
| 23:00 | 06:00 | 9.3°C | 5.2°C | 0 | 2.8 | S | 51 | 1015 |
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 4 March 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 (2026-07-19). 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 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Williamson, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 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 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.