Home / Copperopolis / 6 January 2018
Copperopolis
United States · 6 January 2018
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Average
12°C
low 6.8°C · high 14.7°C
Rainfall
9.5mm
rain recorded
Wind
1.4m/s
daily average
Humidity
88%
daily average
Cloud
66%
cover
Pressure
1022hPa
daily average
The temperature ranged from 6.8°C around 21:00 to 14.7°C around 13:00. Rain was recorded across 9 hours, from around 00:00 to 12:00 (9.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
69th percentile
Low temperature
70th percentile
Rainfall
80th percentile
Wind
29th 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 12°C on this specific day.
Sun & daylight
Sunrise
07:19
Sunset
16:58
Day length
9h 39m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 14°C | 13.7°C | 0.86 | 1.8 | NW | 94 | 1022 |
| 01:00 | 09:00 | 13.4°C | 12.7°C | 1.23 | 2.1 | NW | 93 | 1022 |
| 02:00 | 10:00 | 12.7°C | 12.5°C | 1.67 | 1.4 | N | 97 | 1022 |
| 03:00 | 11:00 | 12.5°C | 12.5°C | 1.93 | 0.8 | N | 97 | 1021 |
| 04:00 | 12:00 | 12.4°C | 12.9°C | 1.66 | 0 | NE | 96 | 1021 |
| 05:00 | 13:00 | 12.5°C | 12.7°C | 0.92 | 0.5 | WNW | 95 | 1021 |
| 06:00 | 14:00 | 12.3°C | 11.6°C | 0.32 | 1.7 | WNW | 95 | 1022 |
| 07:00 | 15:00 | 11.6°C | 10.7°C | 0.08 | 1.5 | NW | 92 | 1022 |
| 08:00 | 16:00 | 11.9°C | 11.4°C | 0.01 | 1 | NNE | 91 | 1022 |
| 09:00 | 17:00 | 12.5°C | 12.4°C | 0.01 | 0.6 | N | 90 | 1022 |
| 10:00 | 18:00 | 13.4°C | 12.8°C | 0.05 | 1.2 | WNW | 84 | 1022 |
| 11:00 | 19:00 | 13.7°C | 12.2°C | 0.43 | 2.4 | WNW | 81 | 1023 |
| 12:00 | 20:00 | 13.9°C | 12.4°C | 0.26 | 2.3 | WNW | 76 | 1023 |
| 13:00 | 21:00 | 14.7°C | 13.3°C | 0.02 | 1.3 | NW | 62 | 1022 |
| 14:00 | 22:00 | 14.1°C | 13.2°C | 0 | 1.6 | NW | 80 | 1021 |
| 15:00 | 23:00 | 14.2°C | 13.3°C | 0 | 1.6 | NW | 77 | 1021 |
| 16:00 | 00:00 | 14.4°C | 13.6°C | 0.01 | 1.2 | NW | 75 | 1021 |
| 17:00 | 01:00 | 12.4°C | 11.4°C | 0 | 1.3 | W | 81 | 1021 |
| 18:00 | 02:00 | 11.4°C | 9.6°C | 0 | 2 | W | 81 | 1022 |
| 19:00 | 03:00 | 9.3°C | 7.7°C | 0 | 1.7 | NNW | 92 | 1022 |
| 20:00 | 04:00 | 8.6°C | 7.1°C | 0 | 1.5 | NNE | 95 | 1022 |
| 21:00 | 05:00 | 6.8°C | 5°C | 0 | 1.4 | NNE | 96 | 1022 |
| 22:00 | 06:00 | 6.9°C | 4.9°C | 0 | 1.6 | NNE | 95 | 1022 |
| 23:00 | 07:00 | 7.1°C | 5°C | 0 | 1.6 | NNE | 94 | 1021 |
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 6 January 2018 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Copperopolis, 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 Copperopolis, 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.