Home / Tantalus / 20 November 2017
Tantalus
United States · 20 November 2017
← 19 November 201721 November 2017 →
Average
13.7°C
low 12.2°C · high 15.5°C
Rainfall
11.9mm
rain recorded
Wind
5.5m/s
daily average
Humidity
90%
daily average
Cloud
100%
cover
Pressure
1017hPa
daily average
The temperature ranged from 12.2°C around 06:00 to 15.5°C around 22:00. Rain was recorded across 15 hours, from around 00:00 to 15:00 (11.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
57th percentile
Low temperature
94th percentile
Rainfall
85th percentile
Wind
90th 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 11.2°C, versus 13.7°C on this specific day.
Sun & daylight
Sunrise
07:04
Sunset
16:56
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 | 13.4°C | 9.3°C | 0.1 | 5.2 | SE | 72 | 1017 |
| 01:00 | 09:00 | 13.4°C | 9.4°C | 0.11 | 5.3 | SE | 74 | 1017 |
| 02:00 | 10:00 | 12.5°C | 8.3°C | 0.1 | 5.7 | SE | 79 | 1017 |
| 03:00 | 11:00 | 12.6°C | 8.6°C | 0.06 | 5.5 | SE | 80 | 1015 |
| 04:00 | 12:00 | 12.8°C | 9.3°C | 0.26 | 4.9 | SE | 82 | 1015 |
| 05:00 | 13:00 | 12.5°C | 9.3°C | 2.4 | 5.1 | SE | 90 | 1016 |
| 06:00 | 14:00 | 12.2°C | 8.6°C | 2.11 | 5.7 | SE | 93 | 1015 |
| 07:00 | 15:00 | 12.9°C | 9.4°C | 1.08 | 5.8 | SE | 93 | 1016 |
| 08:00 | 16:00 | 13.2°C | 9.8°C | 0.8 | 5.9 | SE | 95 | 1016 |
| 09:00 | 17:00 | 13.5°C | 10.3°C | 0.8 | 6 | SE | 97 | 1017 |
| 10:00 | 18:00 | 13.8°C | 10.6°C | 0.86 | 6.2 | SE | 99 | 1017 |
| 11:00 | 19:00 | 13.7°C | 10.4°C | 1.5 | 6.3 | SSE | 99 | 1018 |
| 12:00 | 20:00 | 13.9°C | 10.9°C | 0.85 | 6 | SSE | 99 | 1017 |
| 13:00 | 21:00 | 14°C | 11°C | 0.43 | 5.8 | SSE | 98 | 1017 |
| 14:00 | 22:00 | 14.1°C | 10.7°C | 0.16 | 6 | SE | 93 | 1017 |
| 15:00 | 23:00 | 14.2°C | 11.1°C | 0.15 | 5.8 | SE | 92 | 1017 |
| 16:00 | 00:00 | 14°C | 10.6°C | 0.07 | 5.9 | SE | 91 | 1017 |
| 17:00 | 01:00 | 14°C | 10.7°C | 0.07 | 5.7 | SE | 90 | 1017 |
| 18:00 | 02:00 | 14.2°C | 11.4°C | 0.02 | 5.2 | SE | 89 | 1017 |
| 19:00 | 03:00 | 14.4°C | 12.1°C | 0.01 | 4.9 | ESE | 94 | 1018 |
| 20:00 | 04:00 | 14.7°C | 12.6°C | 0 | 4.7 | SE | 93 | 1018 |
| 21:00 | 05:00 | 15.1°C | 12.9°C | 0 | 4.8 | SE | 91 | 1019 |
| 22:00 | 06:00 | 15.5°C | 13.2°C | 0 | 5 | SE | 90 | 1020 |
| 23:00 | 07:00 | 15.2°C | 12.6°C | 0 | 5.1 | SE | 89 | 1020 |
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
- Tantalus — 39.250°, -123.750°, ERA5 grid cell center, 3798.4 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 20 November 2017 specifically — not a monthly average. See the Tantalus 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 (2026-07-21). Historical climate data for Tantalus, United States (39.25°N, 123.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Tantalus, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Tantalus, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Tantalus, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.