Home / Pasadena / 22 December 2019
Pasadena
United States · 22 December 2019
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Average
12.8°C
low 9.9°C · high 17.3°C
Rainfall
9.5mm
rain recorded
Wind
3m/s
daily average
Humidity
36.6%
daily average
Cloud
89%
cover
Pressure
1013hPa
daily average
The temperature ranged from 9.9°C around 04:00 to 17.3°C around 13:00. Rain was recorded across 8 hours, from around 16:00 to 23:00 (9.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
45th percentile
Low temperature
78th percentile
Rainfall
90th percentile
Wind
91th 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 11.7°C, versus 12.8°C on this specific day.
Sun & daylight
Sunrise
06:55
Sunset
16:47
Day length
9h 52m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 12.2°C | 8.1°C | 0 | 2.3 | ENE | 31 | 1015 |
| 01:00 | 09:00 | 11.6°C | 7.9°C | 0 | 1.9 | ENE | 37 | 1015 |
| 02:00 | 10:00 | 11.6°C | 7.4°C | 0 | 2.2 | ENE | 30 | 1015 |
| 03:00 | 11:00 | 10.7°C | 6.4°C | 0 | 2.3 | ENE | 30 | 1015 |
| 04:00 | 12:00 | 9.9°C | 5.6°C | 0 | 2.2 | ENE | 31 | 1014 |
| 05:00 | 13:00 | 10.1°C | 5.6°C | 0 | 2.4 | ENE | 28 | 1014 |
| 06:00 | 14:00 | 9.9°C | 5.3°C | 0 | 2.8 | ENE | 32 | 1014 |
| 07:00 | 15:00 | 10.5°C | 5.8°C | 0 | 3 | E | 33 | 1014 |
| 08:00 | 16:00 | 11.3°C | 7°C | 0 | 2.3 | E | 29 | 1014 |
| 09:00 | 17:00 | 12.7°C | 8.2°C | 0 | 2.5 | ESE | 24 | 1015 |
| 10:00 | 18:00 | 14.2°C | 9.2°C | 0 | 3.1 | SSE | 24 | 1015 |
| 11:00 | 19:00 | 15.5°C | 9.5°C | 0 | 4.7 | SSE | 22 | 1015 |
| 12:00 | 20:00 | 16.6°C | 10.2°C | 0 | 5.2 | SSE | 20 | 1013 |
| 13:00 | 21:00 | 17.3°C | 11.1°C | 0 | 5.1 | SSE | 20 | 1013 |
| 14:00 | 22:00 | 15.6°C | 10.1°C | 0 | 4.7 | SSE | 31 | 1012 |
| 15:00 | 23:00 | 15.4°C | 10.4°C | 0.05 | 4.1 | SSE | 32 | 1012 |
| 16:00 | 00:00 | 14.7°C | 10.8°C | 0.47 | 2.8 | SSE | 38 | 1012 |
| 17:00 | 01:00 | 14.3°C | 11.4°C | 0.28 | 2 | ESE | 45 | 1012 |
| 18:00 | 02:00 | 13.8°C | 10.6°C | 0.5 | 2.5 | ESE | 49 | 1012 |
| 19:00 | 03:00 | 12.8°C | 9.5°C | 0.58 | 2.5 | ESE | 52 | 1012 |
| 20:00 | 04:00 | 12.2°C | 8.9°C | 1.02 | 2.4 | ESE | 52 | 1012 |
| 21:00 | 05:00 | 11.7°C | 8.4°C | 1.92 | 2.6 | E | 57 | 1012 |
| 22:00 | 06:00 | 11.1°C | 7.9°C | 2.11 | 3 | E | 65 | 1013 |
| 23:00 | 07:00 | 10.8°C | 7.4°C | 2.59 | 3.3 | E | 68 | 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
- Pasadena — 34.250°, -118.250°, ERA5 grid cell center, 14.9 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 22 December 2019 specifically — not a monthly average. See the Pasadena 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 (2026-07-20). Historical climate data for Pasadena, United States (34.25°N, 118.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Pasadena, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Pasadena, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Pasadena, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.