Home / Tujunga / 20 December 2017
Tujunga
United States · 20 December 2017
← 19 December 201721 December 2017 →
Average
9.2°C
low 5.1°C · high 14.3°C
Rainfall
0.2mm
dry day
Wind
2m/s
daily average
Humidity
56.9%
daily average
Cloud
31%
cover
Pressure
1019hPa
daily average
The temperature ranged from 5.1°C around 06:00 to 14.3°C around 13:00. Rain was recorded for one hour, around 17:00 (0.2mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
21th percentile
Low temperature
27th percentile
Rainfall
73th percentile
Wind
56th 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 11.6°C, versus 9.2°C on this specific day.
Sun & daylight
Sunrise
06:54
Sunset
16:46
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 | 7.9°C | 5.4°C | 0 | 0.9 | ENE | 59 | 1021 |
| 01:00 | 09:00 | 7.3°C | 4.7°C | 0 | 1 | ENE | 61 | 1021 |
| 02:00 | 10:00 | 6.8°C | 4.3°C | 0 | 0.8 | E | 61 | 1021 |
| 03:00 | 11:00 | 6.1°C | 3.3°C | 0 | 1 | E | 61 | 1021 |
| 04:00 | 12:00 | 5.5°C | 2.5°C | 0 | 1.1 | ENE | 60 | 1021 |
| 05:00 | 13:00 | 5.4°C | 2.5°C | 0 | 1 | ENE | 61 | 1021 |
| 06:00 | 14:00 | 5.1°C | 2.3°C | 0 | 0.8 | E | 62 | 1020 |
| 07:00 | 15:00 | 5.8°C | 2.9°C | 0 | 0.9 | E | 57 | 1021 |
| 08:00 | 16:00 | 7.5°C | 4.5°C | 0 | 0.8 | ESE | 46 | 1021 |
| 09:00 | 17:00 | 10.6°C | 7.4°C | 0.01 | 1.4 | SSE | 42 | 1021 |
| 10:00 | 18:00 | 12°C | 9°C | 0.01 | 1.6 | SSE | 48 | 1021 |
| 11:00 | 19:00 | 13.1°C | 9.9°C | 0.01 | 2.3 | S | 49 | 1020 |
| 12:00 | 20:00 | 13.7°C | 10.6°C | 0 | 2.5 | SSW | 52 | 1019 |
| 13:00 | 21:00 | 14.3°C | 10.3°C | 0 | 3.9 | SSW | 52 | 1017 |
| 14:00 | 22:00 | 13.5°C | 9.9°C | 0 | 3.7 | SSW | 57 | 1017 |
| 15:00 | 23:00 | 12.7°C | 9.6°C | 0 | 3.2 | SSW | 63 | 1016 |
| 16:00 | 00:00 | 11.7°C | 9.2°C | 0 | 2.3 | SW | 67 | 1016 |
| 17:00 | 01:00 | 11.3°C | 10.1°C | 0.11 | 0.9 | WSW | 76 | 1016 |
| 18:00 | 02:00 | 11.1°C | 9.4°C | 0.07 | 1.5 | N | 77 | 1016 |
| 19:00 | 03:00 | 9.3°C | 6.2°C | 0 | 2.8 | NNE | 74 | 1017 |
| 20:00 | 04:00 | 8.5°C | 4.1°C | 0 | 3.2 | NNE | 51 | 1018 |
| 21:00 | 05:00 | 7.5°C | 2.3°C | 0 | 3.7 | N | 41 | 1018 |
| 22:00 | 06:00 | 6.9°C | 2°C | 0 | 3.4 | N | 44 | 1018 |
| 23:00 | 07:00 | 6.5°C | 1.9°C | 0 | 3 | N | 46 | 1018 |
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
- Tujunga — 34.250°, -118.250°, ERA5 grid cell center, 3.5 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 20 December 2017 specifically — not a monthly average. See the Tujunga 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 (2026-07-19). Historical climate data for Tujunga, 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 Tujunga, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Tujunga, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Tujunga, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.