Cool
United States · 24 October 2021
← 23 October 202125 October 2021 →
Average
12.4°C
low 11.4° · high 13.3°
Rainfall
173.3mm
rain recorded
Wind
6.5m/s
daily average
Humidity
91.7%
daily average
Cloud
100%
cover
Pressure
1004hPa
daily average
The temperature ranged from 11.4°C around 00:00 to 13.3°C around 18:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (173.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
0th percentile
Low temperature
78th percentile
Rainfall
100th percentile
Wind
100th 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 15.6°C, versus 12.4°C on this specific day.
Sun & daylight
Sunrise
07:23
Sunset
18:12
Day length
10h 49m
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 | 07:00 | 11.4 | 8.6 | 2.2 | 3.8 | SE | 88 | 1011 |
| 01:00 | 08:00 | 11.7 | 8.4 | 2.12 | 4.6 | SE | 88 | 1010 |
| 02:00 | 09:00 | 12.1 | 8.7 | 2 | 5 | SE | 89 | 1009 |
| 03:00 | 10:00 | 11.9 | 8.1 | 2.49 | 5.6 | SE | 90 | 1007 |
| 04:00 | 11:00 | 12.3 | 8.6 | 3.69 | 5.7 | SSE | 91 | 1007 |
| 05:00 | 12:00 | 12.4 | 8.1 | 4.45 | 6.5 | SSE | 90 | 1006 |
| 06:00 | 13:00 | 12.2 | 7.3 | 6.56 | 7.3 | SSE | 89 | 1005 |
| 07:00 | 14:00 | 12.1 | 6.5 | 8.02 | 8.2 | SSE | 88 | 1004 |
| 08:00 | 15:00 | 12.1 | 6 | 10.26 | 8.7 | SSE | 88 | 1004 |
| 09:00 | 16:00 | 12.5 | 6.5 | 9.46 | 8.8 | SSE | 87 | 1004 |
| 10:00 | 17:00 | 12.9 | 6.9 | 8.65 | 8.7 | SSE | 86 | 1004 |
| 11:00 | 18:00 | 13.1 | 7 | 8.52 | 9 | SSE | 86 | 1003 |
| 12:00 | 19:00 | 12.7 | 6.9 | 9.21 | 8.9 | SSE | 89 | 1003 |
| 13:00 | 20:00 | 12.5 | 6.9 | 8.36 | 8.5 | S | 91 | 1002 |
| 14:00 | 21:00 | 12.4 | 7.2 | 8.69 | 8 | S | 93 | 1002 |
| 15:00 | 22:00 | 12.4 | 7.7 | 9.09 | 7.4 | S | 97 | 1002 |
| 16:00 | 23:00 | 12.6 | 8.6 | 8.87 | 6.7 | S | 97 | 1002 |
| 17:00 | 00:00 | 12.9 | 9.4 | 8.79 | 6.2 | S | 97 | 1001 |
| 18:00 | 01:00 | 13.3 | 10 | 9.71 | 6 | SSW | 97 | 1002 |
| 19:00 | 02:00 | 13.2 | 9.9 | 10.38 | 6 | SSW | 98 | 1002 |
| 20:00 | 03:00 | 12.2 | 8.7 | 9.89 | 5.7 | SSW | 95 | 1003 |
| 21:00 | 04:00 | 12.1 | 9 | 9.37 | 5.1 | SW | 95 | 1003 |
| 22:00 | 05:00 | 12 | 10.2 | 7.23 | 3.2 | SW | 95 | 1004 |
| 23:00 | 06:00 | 12.2 | 11.3 | 5.3 | 2.1 | SSW | 96 | 1005 |
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
- Cool — 39.000°, -121.000°, ERA5 grid cell center, 12.6 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 24 October 2021 specifically — not a monthly average. See the Cool 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 Cool, United States (39.00°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 Cool, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cool, 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 Cool, 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.