Home / Blackhawk / 31 December 2022
Blackhawk
United States · 31 December 2022
← 30 December 20221 January 2023 →
Average
12.8°C
low 10.2° · high 15.1°
Rainfall
77.5mm
rain recorded
Wind
2.8m/s
daily average
Humidity
91.6%
daily average
Cloud
97%
cover
Pressure
1007hPa
daily average
The temperature ranged from 10.2°C around 16:00 to 15.1°C around 00:00. Rain was recorded across 22 hours, from around 00:00 to 21:00 (77.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
72th percentile
Low temperature
93th percentile
Rainfall
100th percentile
Wind
79th 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 9.4°C, versus 12.8°C on this specific day.
Sun & daylight
Sunrise
07:23
Sunset
16:59
Day length
9h 36m
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 | 15.1 | 14.1 | 1.55 | 3.4 | SW | 95 | 1012 |
| 01:00 | 09:00 | 14.9 | 14.2 | 1.53 | 2.8 | SW | 95 | 1012 |
| 02:00 | 10:00 | 14.2 | 13.8 | 0.94 | 2.4 | SSW | 98 | 1011 |
| 03:00 | 11:00 | 14.6 | 14.5 | 0.91 | 2 | S | 96 | 1010 |
| 04:00 | 12:00 | 14.3 | 14.1 | 0.86 | 1.9 | S | 96 | 1009 |
| 05:00 | 13:00 | 14.2 | 14.6 | 2.49 | 1.1 | SSW | 96 | 1008 |
| 06:00 | 14:00 | 14.2 | 14.2 | 3.82 | 1.5 | WSW | 96 | 1008 |
| 07:00 | 15:00 | 14.2 | 14.2 | 3.98 | 1.3 | SW | 94 | 1008 |
| 08:00 | 16:00 | 14.2 | 14.4 | 3.94 | 1.3 | S | 95 | 1008 |
| 09:00 | 17:00 | 14.2 | 14.2 | 3.86 | 1.6 | SSE | 95 | 1007 |
| 10:00 | 18:00 | 14.3 | 14.9 | 3.27 | 0.7 | W | 94 | 1007 |
| 11:00 | 19:00 | 14.4 | 14.2 | 4.49 | 1.7 | SW | 93 | 1007 |
| 12:00 | 20:00 | 14.1 | 14.2 | 8 | 1.2 | SW | 95 | 1005 |
| 13:00 | 21:00 | 13.4 | 13.8 | 10.39 | 0.7 | NNW | 96 | 1004 |
| 14:00 | 22:00 | 12 | 10 | 9.14 | 3.3 | N | 95 | 1003 |
| 15:00 | 23:00 | 10.9 | 7.4 | 6.14 | 4.9 | N | 90 | 1002 |
| 16:00 | 00:00 | 10.2 | 5.6 | 4.91 | 6.1 | NNW | 88 | 1003 |
| 17:00 | 01:00 | 10.5 | 6.8 | 2.98 | 4.7 | NW | 86 | 1004 |
| 18:00 | 02:00 | 10.6 | 7.2 | 2.23 | 4.1 | NW | 85 | 1005 |
| 19:00 | 03:00 | 10.3 | 7 | 1.45 | 3.9 | NW | 83 | 1005 |
| 20:00 | 04:00 | 10.7 | 7.3 | 0.41 | 4.2 | NW | 84 | 1006 |
| 21:00 | 05:00 | 10.8 | 7.2 | 0.17 | 4.6 | NW | 86 | 1006 |
| 22:00 | 06:00 | 10.8 | 7.3 | 0.05 | 4.4 | NW | 84 | 1007 |
| 23:00 | 07:00 | 10.5 | 7 | 0 | 4.3 | WNW | 84 | 1007 |
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
- Blackhawk — 37.750°, -122.000°, ERA5 grid cell center, 11.3 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 Blackhawk 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 (2026-07-16). Historical climate data for Blackhawk, United States (37.75°N, 122.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Blackhawk, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Blackhawk, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Blackhawk, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.