Home / Blackhawk / 31 December 2016
Blackhawk
United States · 31 December 2016
← 30 December 20161 January 2017 →
Average
7.7°C
low 4.1° · high 11.2°
Rainfall
0mm
dry day
Wind
1.9m/s
daily average
Humidity
74.1%
daily average
Cloud
13%
cover
Pressure
1014hPa
daily average
The temperature ranged from 4.1°C around 07:00 to 11.2°C around 15:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
10th percentile
Low temperature
30th percentile
Rainfall
43th percentile
Wind
59th 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 9.6°C, versus 7.7°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 | 9.6 | 6.8 | 0.01 | 3.4 | SW | 91 | 1013 |
| 01:00 | 09:00 | 8.8 | 6.1 | 0 | 2.9 | SW | 88 | 1013 |
| 02:00 | 10:00 | 7.9 | 4.8 | 0.01 | 2.7 | SW | 79 | 1013 |
| 03:00 | 11:00 | 7.4 | 4.6 | 0 | 2.1 | SW | 78 | 1013 |
| 04:00 | 12:00 | 6.3 | 3.6 | 0 | 1.7 | SSW | 80 | 1013 |
| 05:00 | 13:00 | 5.9 | 3.3 | 0 | 1.6 | S | 81 | 1013 |
| 06:00 | 14:00 | 5.1 | 2.2 | 0 | 1.8 | SSE | 82 | 1013 |
| 07:00 | 15:00 | 4.1 | 0.8 | 0 | 2.2 | S | 81 | 1013 |
| 08:00 | 16:00 | 4.9 | 2 | 0 | 1.7 | SE | 80 | 1013 |
| 09:00 | 17:00 | 7 | 4.4 | 0 | 1.6 | E | 76 | 1014 |
| 10:00 | 18:00 | 8.6 | 6 | 0 | 1.7 | ENE | 70 | 1015 |
| 11:00 | 19:00 | 9.2 | 6.2 | 0.01 | 2.2 | NE | 65 | 1015 |
| 12:00 | 20:00 | 9.7 | 6.9 | 0 | 1.9 | NE | 64 | 1014 |
| 13:00 | 21:00 | 10.3 | 7.4 | 0 | 1.9 | NE | 57 | 1014 |
| 14:00 | 22:00 | 11.1 | 8.6 | 0 | 1.2 | E | 51 | 1013 |
| 15:00 | 23:00 | 11.2 | 9 | 0 | 0.7 | NNE | 51 | 1013 |
| 16:00 | 00:00 | 11.2 | 8.4 | 0 | 1.5 | NNW | 53 | 1013 |
| 17:00 | 01:00 | 8.8 | 6 | 0 | 1.7 | WNW | 63 | 1014 |
| 18:00 | 02:00 | 7 | 3.8 | 0 | 2 | WSW | 68 | 1014 |
| 19:00 | 03:00 | 6.4 | 3.3 | 0 | 2.2 | WSW | 77 | 1014 |
| 20:00 | 04:00 | 6.2 | 3.3 | 0 | 2.2 | WSW | 83 | 1015 |
| 21:00 | 05:00 | 5.6 | 2.9 | 0 | 1.8 | SSW | 85 | 1015 |
| 22:00 | 06:00 | 5.5 | 3 | 0 | 1.6 | SSW | 87 | 1015 |
| 23:00 | 07:00 | 6.2 | 3.4 | 0 | 2.3 | SSW | 87 | 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
- 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 2016 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Blackhawk, 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 Blackhawk, 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.