Home / Arcata / 20 November 2018
Arcata
United States · 20 November 2018
← 19 November 201821 November 2018 →
Average
8.8°C
low 3° · high 14°
Rainfall
0.1mm
dry day
Wind
2.8m/s
daily average
Humidity
65.9%
daily average
Cloud
72%
cover
Pressure
1013hPa
daily average
The temperature ranged from 3°C around 06:00 to 14°C around 14:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
75th percentile
Low temperature
10th percentile
Rainfall
44th percentile
Wind
61th 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 9.1°C, versus 8.8°C on this specific day.
Sun & daylight
Sunrise
07:08
Sunset
16:54
Day length
9h 45m
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 | 5.5 | 1.9 | 0 | 2.9 | E | 81 | 1015 |
| 01:00 | 09:00 | 5.7 | 2.3 | 0 | 2.5 | E | 80 | 1015 |
| 02:00 | 10:00 | 4.3 | 0.8 | 0 | 2.4 | E | 79 | 1015 |
| 03:00 | 11:00 | 4.2 | 0.9 | 0 | 1.9 | E | 75 | 1015 |
| 04:00 | 12:00 | 3.8 | 0.4 | 0 | 2 | E | 76 | 1014 |
| 05:00 | 13:00 | 3.5 | -0.4 | 0 | 2.7 | ESE | 78 | 1014 |
| 06:00 | 14:00 | 3 | -1.5 | 0 | 3.3 | ESE | 77 | 1014 |
| 07:00 | 15:00 | 4.6 | 0.2 | 0 | 3.5 | ESE | 72 | 1013 |
| 08:00 | 16:00 | 5.3 | 1.3 | 0 | 3 | ESE | 69 | 1013 |
| 09:00 | 17:00 | 7.9 | 4.7 | 0 | 2.1 | ESE | 62 | 1014 |
| 10:00 | 18:00 | 10.2 | 7.5 | 0 | 1.5 | SE | 58 | 1015 |
| 11:00 | 19:00 | 12.1 | 9.3 | 0 | 1.5 | SSE | 47 | 1014 |
| 12:00 | 20:00 | 12.7 | 9.7 | 0 | 2 | S | 50 | 1013 |
| 13:00 | 21:00 | 13.7 | 10.3 | 0 | 2.7 | SSW | 47 | 1013 |
| 14:00 | 22:00 | 14 | 10.7 | 0 | 2.5 | SSW | 47 | 1012 |
| 15:00 | 23:00 | 13.6 | 10.4 | 0 | 2.7 | SSW | 51 | 1012 |
| 16:00 | 00:00 | 12.8 | 9.4 | 0 | 3.1 | SSW | 56 | 1012 |
| 17:00 | 01:00 | 11.8 | 8.6 | 0 | 3.1 | SSW | 65 | 1013 |
| 18:00 | 02:00 | 11.2 | 8.2 | 0 | 2.9 | SSE | 68 | 1013 |
| 19:00 | 03:00 | 10.4 | 7 | 0 | 3.4 | SSE | 72 | 1013 |
| 20:00 | 04:00 | 10.5 | 6.7 | 0 | 3.9 | SE | 72 | 1013 |
| 21:00 | 05:00 | 10.3 | 6.3 | 0 | 4.1 | SE | 70 | 1012 |
| 22:00 | 06:00 | 10.3 | 6.1 | 0 | 4.2 | SE | 67 | 1012 |
| 23:00 | 07:00 | 10.3 | 5.9 | 0.05 | 4.3 | SE | 64 | 1012 |
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
- Arcata — 40.750°, -124.000°, ERA5 grid cell center, 14.7 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 20 November 2018 specifically — not a monthly average. See the Arcata 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 Arcata, United States (40.75°N, 124.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Arcata, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Arcata, 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 Arcata, 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.