Home / Simi Valley / 24 December 2025
Simi Valley
United States · 24 December 2025
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Average
14.4°C
low 13° · high 16.2°
Rainfall
89.3mm
rain recorded
Wind
3.8m/s
daily average
Humidity
94.4%
daily average
Cloud
98%
cover
Pressure
1013hPa
daily average
The temperature ranged from 13°C around 22:00 to 16.2°C around 07:00. Rain was recorded across 23 hours, from around 00:00 to 23:00 (89.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
39th percentile
Low temperature
99th percentile
Rainfall
100th percentile
Wind
98th 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 11.8°C, versus 14.4°C on this specific day.
Sun & daylight
Sunrise
06:58
Sunset
16:51
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 °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 13.6 | 11.5 | 0.7 | 3.8 | ESE | 90 | 1014 |
| 01:00 | 09:00 | 13.5 | 11.2 | 0.83 | 4.3 | ESE | 94 | 1013 |
| 02:00 | 10:00 | 14.2 | 12 | 1.71 | 4.8 | SE | 97 | 1012 |
| 03:00 | 11:00 | 14.6 | 12.9 | 5.42 | 4.3 | ESE | 97 | 1011 |
| 04:00 | 12:00 | 14.9 | 13.3 | 6.67 | 4.3 | SE | 98 | 1011 |
| 05:00 | 13:00 | 15.5 | 12.6 | 8.08 | 6.6 | SSE | 98 | 1010 |
| 06:00 | 14:00 | 16 | 12.4 | 8.5 | 7.6 | SSE | 97 | 1010 |
| 07:00 | 15:00 | 16.2 | 13.6 | 9.42 | 6.4 | S | 96 | 1011 |
| 08:00 | 16:00 | 16.2 | 14.1 | 9.23 | 5.6 | S | 96 | 1012 |
| 09:00 | 17:00 | 15.6 | 14 | 10.25 | 4.7 | SSW | 96 | 1012 |
| 10:00 | 18:00 | 15.2 | 14.2 | 9.71 | 3.4 | SSW | 95 | 1014 |
| 11:00 | 19:00 | 14.6 | 13.8 | 3.34 | 2.9 | SSW | 95 | 1014 |
| 12:00 | 20:00 | 13.9 | 13.6 | 3.57 | 1.8 | S | 96 | 1013 |
| 13:00 | 21:00 | 13.7 | 13.4 | 3.97 | 2 | ESE | 98 | 1012 |
| 14:00 | 22:00 | 13.2 | 12.2 | 1.45 | 2.7 | ESE | 97 | 1011 |
| 15:00 | 23:00 | 14 | 12.6 | 0.06 | 3.1 | SE | 92 | 1012 |
| 16:00 | 00:00 | 14.2 | 13.7 | 0.35 | 2.2 | SE | 96 | 1012 |
| 17:00 | 01:00 | 14.2 | 13.8 | 0.77 | 2.2 | SSE | 96 | 1013 |
| 18:00 | 02:00 | 14.2 | 13.9 | 0.84 | 1.9 | SSE | 94 | 1013 |
| 19:00 | 03:00 | 14.2 | 13.3 | 0.71 | 2.6 | SSE | 91 | 1014 |
| 20:00 | 04:00 | 13.9 | 12.4 | 0.66 | 3.2 | SSE | 90 | 1014 |
| 21:00 | 05:00 | 13.1 | 11.2 | 0.82 | 3.3 | SSE | 89 | 1015 |
| 22:00 | 06:00 | 13 | 10.9 | 1.09 | 3.4 | S | 88 | 1016 |
| 23:00 | 07:00 | 13.3 | 11.4 | 1.14 | 3.5 | S | 90 | 1016 |
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
- Simi Valley — 34.250°, -118.750°, ERA5 grid cell center, 3.6 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 24 December 2025 specifically — not a monthly average. See the Simi Valley 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 Simi Valley, United States (34.25°N, 118.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Simi Valley, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Simi Valley, 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 Simi Valley, 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.