Home / Keyes / 23 January 2021
Keyes
United States · 23 January 2021
← 22 January 202124 January 2021 →
Average
8.8°C
low 6° · high 13.4°
Rainfall
0mm
dry day
Wind
2.5m/s
daily average
Humidity
77.2%
daily average
Cloud
33%
cover
Pressure
1013hPa
daily average
The temperature ranged from 6°C around 01:00 to 13.4°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
13th percentile
Low temperature
50th percentile
Rainfall
66th 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 10.6°C, versus 8.8°C on this specific day.
Sun & daylight
Sunrise
07:13
Sunset
17:18
Day length
10h 5m
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 | 7.5 | 6.3 | 0 | 0.3 | N | 89 | 1012 |
| 01:00 | 09:00 | 6 | 4.6 | 0.01 | 0.4 | N | 94 | 1013 |
| 02:00 | 10:00 | 8.3 | 6.5 | 0 | 1.7 | N | 92 | 1013 |
| 03:00 | 11:00 | 6.2 | 4.2 | 0 | 1.4 | WNW | 95 | 1013 |
| 04:00 | 12:00 | 6.3 | 4.2 | 0 | 1.5 | WNW | 94 | 1013 |
| 05:00 | 13:00 | 6.5 | 4 | 0 | 2.1 | NW | 94 | 1013 |
| 06:00 | 14:00 | 6.4 | 3.8 | 0 | 2.3 | NW | 93 | 1013 |
| 07:00 | 15:00 | 6.5 | 3.6 | 0 | 2.6 | NW | 90 | 1014 |
| 08:00 | 16:00 | 6.4 | 3 | 0 | 3.2 | NW | 91 | 1014 |
| 09:00 | 17:00 | 8 | 4.8 | 0 | 3.3 | NW | 88 | 1015 |
| 10:00 | 18:00 | 9.3 | 5.7 | 0 | 3.9 | NW | 83 | 1015 |
| 11:00 | 19:00 | 10.4 | 6.8 | 0 | 3.8 | NW | 75 | 1015 |
| 12:00 | 20:00 | 11.2 | 7.5 | 0 | 3.8 | NW | 69 | 1014 |
| 13:00 | 21:00 | 12.1 | 7.8 | 0 | 4 | NW | 53 | 1014 |
| 14:00 | 22:00 | 12.9 | 8.6 | 0 | 4 | NNW | 52 | 1014 |
| 15:00 | 23:00 | 13.4 | 9.3 | 0 | 3.7 | NNW | 50 | 1013 |
| 16:00 | 00:00 | 13.3 | 9.4 | 0 | 3.6 | N | 50 | 1013 |
| 17:00 | 01:00 | 12.8 | 9.1 | 0 | 3 | N | 49 | 1013 |
| 18:00 | 02:00 | 10.3 | 7.5 | 0 | 1.8 | N | 60 | 1013 |
| 19:00 | 03:00 | 8.2 | 5.3 | 0 | 2.3 | NNW | 77 | 1013 |
| 20:00 | 04:00 | 7.9 | 5.1 | 0 | 2.2 | WNW | 78 | 1013 |
| 21:00 | 05:00 | 7.3 | 4.4 | 0 | 2.2 | W | 80 | 1013 |
| 22:00 | 06:00 | 6.5 | 3.7 | 0 | 1.8 | W | 79 | 1013 |
| 23:00 | 07:00 | 6.2 | 3.4 | 0 | 1.9 | W | 80 | 1013 |
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
- Keyes — 37.500°, -121.000°, ERA5 grid cell center, 9.8 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 23 January 2021 specifically — not a monthly average. See the Keyes 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 Keyes, United States (37.50°N, 121.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Keyes, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Keyes, 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 Keyes, 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.