Home / Copperopolis / 4 January 2017
Copperopolis
United States · 4 January 2017
← 3 January 20175 January 2017 →
Average
10.9°C
low 9.1° · high 11.6°
Rainfall
41.4mm
rain recorded
Wind
4.9m/s
daily average
Humidity
90.8%
daily average
Cloud
100%
cover
Pressure
1014hPa
daily average
The temperature ranged from 9.1°C around 23:00 to 11.6°C around 11:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (41.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
23th percentile
Low temperature
85th percentile
Rainfall
96th percentile
Wind
91th 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 8.9°C, versus 10.9°C on this specific day.
Sun & daylight
Sunrise
07:19
Sunset
16:57
Day length
9h 38m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 10.7 | 4.2 | 1.6 | 8.3 | SE | 79 | 1015 |
| 01:00 | 09:00 | 10.7 | 4.6 | 2.01 | 7.9 | SE | 82 | 1014 |
| 02:00 | 10:00 | 11 | 5.5 | 2.34 | 7.6 | SE | 87 | 1015 |
| 03:00 | 11:00 | 11.2 | 5.6 | 2.63 | 7.6 | SE | 87 | 1014 |
| 04:00 | 12:00 | 11 | 5.6 | 2.99 | 7.4 | SE | 88 | 1014 |
| 05:00 | 13:00 | 11.1 | 6.2 | 2.88 | 6.8 | SSE | 88 | 1015 |
| 06:00 | 14:00 | 11.1 | 6.6 | 2.24 | 6.2 | SE | 89 | 1015 |
| 07:00 | 15:00 | 11.2 | 6.7 | 1.82 | 6.2 | SE | 89 | 1015 |
| 08:00 | 16:00 | 11.2 | 6.8 | 1.48 | 6.2 | SE | 89 | 1015 |
| 09:00 | 17:00 | 11.2 | 6.9 | 0.47 | 6.2 | SE | 91 | 1015 |
| 10:00 | 18:00 | 11.5 | 7.3 | 0.6 | 6.1 | SE | 91 | 1015 |
| 11:00 | 19:00 | 11.6 | 7.5 | 1.28 | 6 | SSE | 92 | 1015 |
| 12:00 | 20:00 | 11.5 | 7.5 | 1.12 | 6 | SSE | 94 | 1015 |
| 13:00 | 21:00 | 11.6 | 8.2 | 0.87 | 5.2 | SSE | 95 | 1014 |
| 14:00 | 22:00 | 11.4 | 8.1 | 1.14 | 4.9 | SE | 91 | 1014 |
| 15:00 | 23:00 | 11.4 | 8.9 | 1.49 | 3.8 | SSE | 93 | 1014 |
| 16:00 | 00:00 | 11.4 | 9.6 | 1.44 | 2.8 | S | 93 | 1014 |
| 17:00 | 01:00 | 11.2 | 9.8 | 2.1 | 2.1 | SW | 91 | 1014 |
| 18:00 | 02:00 | 10.7 | 9.8 | 2.03 | 1.1 | SW | 93 | 1014 |
| 19:00 | 03:00 | 10 | 9.1 | 2.06 | 1.1 | SE | 98 | 1013 |
| 20:00 | 04:00 | 9.7 | 9 | 2.18 | 0.9 | SSW | 97 | 1013 |
| 21:00 | 05:00 | 9.6 | 7.8 | 2.06 | 2.3 | WNW | 95 | 1014 |
| 22:00 | 06:00 | 9.4 | 7 | 1.9 | 3 | NW | 96 | 1015 |
| 23:00 | 07:00 | 9.1 | 7.1 | 0.65 | 2.4 | N | 96 | 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
- Copperopolis — 38.000°, -120.750°, ERA5 grid cell center, 9.7 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 4 January 2017 specifically — not a monthly average. See the Copperopolis 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 Copperopolis, United States (38.00°N, 120.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Copperopolis, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Copperopolis, 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 Copperopolis, 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.