Home / Spanaway / 15 December 2021
Spanaway
United States · 15 December 2021
← 14 December 202116 December 2021 →
Average
3.9°C
low 2.9°C · high 5.1°C
Rainfall
6.2mm
rain recorded
Wind
2.8m/s
daily average
Humidity
72.4%
daily average
Cloud
100%
cover
Pressure
1007hPa
daily average
The temperature ranged from 2.9°C around 00:00 to 5.1°C around 08:00. Rain was recorded across 14 hours, from around 09:00 to 22:00 (6.2mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
15th percentile
Low temperature
43th percentile
Rainfall
59th percentile
Wind
54th 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 5.4°C, versus 3.9°C on this specific day.
Sun & daylight
Sunrise
07:49
Sunset
16:21
Day length
8h 32m
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 | 2.9°C | -2°C | 0 | 4.1 | SSE | 78 | 1010 |
| 01:00 | 09:00 | 2.9°C | -2.2°C | 0 | 4.3 | SSE | 75 | 1010 |
| 02:00 | 10:00 | 3.1°C | -1.8°C | 0.01 | 4 | SSE | 73 | 1010 |
| 03:00 | 11:00 | 3.1°C | -2°C | 0.01 | 4.1 | SSE | 73 | 1009 |
| 04:00 | 12:00 | 3.7°C | -1.4°C | 0.01 | 4.1 | SSE | 69 | 1009 |
| 05:00 | 13:00 | 3.8°C | -1.3°C | 0.01 | 4.1 | SSE | 67 | 1008 |
| 06:00 | 14:00 | 4.2°C | -1°C | 0 | 4.1 | SE | 62 | 1008 |
| 07:00 | 15:00 | 4.6°C | -0.4°C | 0.01 | 3.6 | SE | 57 | 1008 |
| 08:00 | 16:00 | 5.1°C | 0.5°C | 0.03 | 3.1 | SE | 55 | 1008 |
| 09:00 | 17:00 | 5.1°C | 0.4°C | 0.1 | 3.2 | ESE | 55 | 1007 |
| 10:00 | 18:00 | 4.7°C | -0.1°C | 0.21 | 3.5 | ESE | 58 | 1007 |
| 11:00 | 19:00 | 4.4°C | -0.5°C | 0.39 | 3.7 | ESE | 62 | 1006 |
| 12:00 | 20:00 | 3.9°C | -0.8°C | 0.51 | 3.6 | ESE | 70 | 1005 |
| 13:00 | 21:00 | 4.2°C | 0.2°C | 0.54 | 2.8 | ESE | 74 | 1005 |
| 14:00 | 22:00 | 4.2°C | 0.1°C | 0.59 | 3.1 | E | 76 | 1005 |
| 15:00 | 23:00 | 4.2°C | 0.5°C | 0.61 | 2.5 | E | 76 | 1004 |
| 16:00 | 00:00 | 4.3°C | 1.3°C | 0.64 | 1.6 | ESE | 74 | 1005 |
| 17:00 | 01:00 | 4.1°C | 1.4°C | 0.62 | 1.3 | E | 79 | 1005 |
| 18:00 | 02:00 | 4.1°C | 1.4°C | 0.56 | 1.1 | ENE | 79 | 1006 |
| 19:00 | 03:00 | 3.5°C | 0.9°C | 0.44 | 1.2 | ENE | 83 | 1006 |
| 20:00 | 04:00 | 3.3°C | 0.6°C | 0.42 | 1.3 | ENE | 85 | 1007 |
| 21:00 | 05:00 | 3.1°C | 0.4°C | 0.28 | 1.3 | ENE | 87 | 1007 |
| 22:00 | 06:00 | 3.2°C | 0.4°C | 0.14 | 1.3 | ENE | 86 | 1008 |
| 23:00 | 07:00 | 3.3°C | 0.6°C | 0.06 | 1.2 | E | 84 | 1009 |
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 15 December 2021 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.