Home / Spanaway / 21 December 2020
Spanaway
United States · 21 December 2020
← 20 December 202022 December 2020 →
Average
8.1°C
low 3.4°C · high 11.9°C
Rainfall
25.3mm
rain recorded
Wind
5.3m/s
daily average
Humidity
92.7%
daily average
Cloud
95%
cover
Pressure
1008hPa
daily average
The temperature ranged from 3.4°C around 20:00 to 11.9°C around 11:00. Rain was recorded across 23 hours, from around 00:00 to 22:00 (25.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
93th percentile
Low temperature
59th percentile
Rainfall
95th percentile
Wind
95th 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 4.7°C, versus 8.1°C on this specific day.
Sun & daylight
Sunrise
07:53
Sunset
16:23
Day length
8h 31m
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 | 7.1°C | 4.8°C | 0.13 | 1.8 | SE | 90 | 1018 |
| 01:00 | 09:00 | 6.6°C | 4.5°C | 0.31 | 1.6 | ESE | 93 | 1017 |
| 02:00 | 10:00 | 5.9°C | 3.2°C | 0.47 | 2.3 | ESE | 95 | 1015 |
| 03:00 | 11:00 | 5.9°C | 3.3°C | 0.71 | 2.1 | ESE | 95 | 1014 |
| 04:00 | 12:00 | 6.5°C | 4.1°C | 0.61 | 2.1 | SE | 95 | 1013 |
| 05:00 | 13:00 | 7.5°C | 4.4°C | 1.12 | 3.3 | SSE | 93 | 1011 |
| 06:00 | 14:00 | 9.6°C | 5.6°C | 1.41 | 5.2 | S | 94 | 1010 |
| 07:00 | 15:00 | 11.1°C | 7°C | 1.57 | 5.9 | S | 93 | 1009 |
| 08:00 | 16:00 | 11.5°C | 7°C | 1.25 | 6.7 | S | 94 | 1008 |
| 09:00 | 17:00 | 11.6°C | 7.1°C | 0.91 | 6.8 | S | 94 | 1007 |
| 10:00 | 18:00 | 11.5°C | 6.8°C | 0.85 | 6.9 | S | 94 | 1006 |
| 11:00 | 19:00 | 11.9°C | 6.9°C | 0.69 | 7.6 | S | 95 | 1005 |
| 12:00 | 20:00 | 11.8°C | 6.4°C | 0.28 | 8.1 | S | 95 | 1003 |
| 13:00 | 21:00 | 11.8°C | 6.6°C | 0.32 | 8 | S | 94 | 1002 |
| 14:00 | 22:00 | 11.3°C | 6.6°C | 1.31 | 7 | SSW | 93 | 1000 |
| 15:00 | 23:00 | 11.1°C | 5.7°C | 2.82 | 7.8 | SSW | 94 | 1000 |
| 16:00 | 00:00 | 9.7°C | 4.6°C | 3.65 | 6.8 | SW | 94 | 1000 |
| 17:00 | 01:00 | 8.1°C | 2.6°C | 2.9 | 6.8 | WSW | 92 | 1001 |
| 18:00 | 02:00 | 5.4°C | 0.7°C | 1.07 | 4.9 | WSW | 93 | 1003 |
| 19:00 | 03:00 | 3.6°C | -1.4°C | 0.68 | 4.9 | WSW | 93 | 1005 |
| 20:00 | 04:00 | 3.4°C | -1.6°C | 1 | 4.8 | WSW | 91 | 1006 |
| 21:00 | 05:00 | 3.6°C | -1.3°C | 0.88 | 4.7 | WSW | 88 | 1008 |
| 22:00 | 06:00 | 3.9°C | -1.3°C | 0.32 | 5 | WSW | 87 | 1009 |
| 23:00 | 07:00 | 4.3°C | -1°C | 0.08 | 5.3 | WSW | 86 | 1010 |
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
- Spanaway — 47.000°, -122.500°, ERA5 grid cell center, 12.6 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 21 December 2020 specifically — not a monthly average. See the Spanaway 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 Spanaway, United States (47.00°N, 122.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Spanaway, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Spanaway, 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 Spanaway, 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.