Home / Copperopolis / 31 December 2022
Copperopolis
United States · 31 December 2022
← 30 December 20221 January 2023 →
Average
13.2°C
low 9.7° · high 15.2°
Rainfall
70.7mm
rain recorded
Wind
5.6m/s
daily average
Humidity
92%
daily average
Cloud
99%
cover
Pressure
1006hPa
daily average
The temperature ranged from 9.7°C around 22:00 to 15.2°C around 00:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (70.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
79th percentile
Low temperature
90th percentile
Rainfall
100th percentile
Wind
96th 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 8.7°C, versus 13.2°C on this specific day.
Sun & daylight
Sunrise
07:18
Sunset
16:53
Day length
9h 35m
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 | 15.2 | 13.1 | 1.84 | 5 | S | 93 | 1013 |
| 01:00 | 09:00 | 14.8 | 12.6 | 1.98 | 4.9 | S | 95 | 1012 |
| 02:00 | 10:00 | 14.8 | 13.1 | 2.06 | 4.3 | S | 96 | 1012 |
| 03:00 | 11:00 | 15.2 | 13.5 | 2.59 | 4.2 | SSE | 93 | 1011 |
| 04:00 | 12:00 | 14.7 | 12.3 | 2.73 | 5 | SSE | 94 | 1010 |
| 05:00 | 13:00 | 14.6 | 12.3 | 2.24 | 5 | SSE | 93 | 1009 |
| 06:00 | 14:00 | 14.6 | 11.8 | 2.81 | 5.7 | SSE | 94 | 1008 |
| 07:00 | 15:00 | 14.2 | 10.6 | 3.35 | 6.6 | SSE | 93 | 1009 |
| 08:00 | 16:00 | 14.2 | 10.2 | 3.16 | 6.8 | SSE | 91 | 1009 |
| 09:00 | 17:00 | 13.7 | 9.6 | 2.29 | 7 | SSE | 93 | 1008 |
| 10:00 | 18:00 | 13.6 | 9.4 | 2 | 6.9 | SSE | 91 | 1008 |
| 11:00 | 19:00 | 13.2 | 9.2 | 3.5 | 6.7 | SSE | 92 | 1007 |
| 12:00 | 20:00 | 13.1 | 9.2 | 2.8 | 6.3 | S | 91 | 1007 |
| 13:00 | 21:00 | 13.1 | 9.4 | 2.4 | 5.9 | SSE | 90 | 1005 |
| 14:00 | 22:00 | 13 | 9.1 | 2.05 | 6.7 | SE | 96 | 1003 |
| 15:00 | 23:00 | 13.1 | 8.7 | 2.53 | 7.2 | SE | 94 | 1002 |
| 16:00 | 00:00 | 13.3 | 8.1 | 2.34 | 8.3 | SE | 90 | 1002 |
| 17:00 | 01:00 | 13.4 | 8.7 | 3.45 | 7.7 | SSE | 90 | 1000 |
| 18:00 | 02:00 | 12.9 | 9.7 | 6.23 | 5.2 | S | 91 | 1000 |
| 19:00 | 03:00 | 11.5 | 8.4 | 7.42 | 4.7 | WSW | 93 | 1001 |
| 20:00 | 04:00 | 10.7 | 7.3 | 6.36 | 4.7 | WNW | 91 | 1002 |
| 21:00 | 05:00 | 10 | 6.9 | 2.54 | 3.8 | WNW | 89 | 1002 |
| 22:00 | 06:00 | 9.7 | 7 | 1.49 | 3.1 | WNW | 87 | 1002 |
| 23:00 | 07:00 | 10.1 | 7.5 | 0.55 | 3 | WNW | 85 | 1003 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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 31 December 2022 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Copperopolis, 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 Copperopolis, 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.