Home / Spanaway / 22 December 2018
Spanaway
United States · 22 December 2018
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Average
4.9°C
low 2.2° · high 7.5°
Rainfall
6.3mm
rain recorded
Wind
2.9m/s
daily average
Humidity
76.6%
daily average
Cloud
93%
cover
Pressure
1018hPa
daily average
The temperature ranged from 2.2°C around 03:00 to 7.5°C around 15:00. Rain was recorded across 9 hours, from around 03:00 to 23:00 (6.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
58th percentile
Low temperature
46th percentile
Rainfall
60th 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 4.6°C, versus 4.9°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 °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 2.9 | -1.2 | 0 | 3 | SE | 82 | 1024 |
| 01:00 | 09:00 | 3.1 | -0.7 | 0.06 | 2.7 | SE | 82 | 1023 |
| 02:00 | 10:00 | 2.3 | -1.9 | 0.01 | 3 | SE | 78 | 1023 |
| 03:00 | 11:00 | 2.2 | -2.1 | 0.29 | 3.2 | SE | 79 | 1024 |
| 04:00 | 12:00 | 2.8 | -1.5 | 0.02 | 3.2 | SE | 77 | 1023 |
| 05:00 | 13:00 | 2.9 | -1.3 | 0.01 | 2.9 | SE | 77 | 1022 |
| 06:00 | 14:00 | 3.4 | -0.5 | 0.02 | 2.6 | SE | 75 | 1022 |
| 07:00 | 15:00 | 3.6 | -0.1 | 0.02 | 2.3 | SE | 73 | 1021 |
| 08:00 | 16:00 | 3.8 | 0.2 | 0.01 | 2.2 | SE | 73 | 1020 |
| 09:00 | 17:00 | 3.6 | 0 | 0 | 2.2 | SE | 76 | 1020 |
| 10:00 | 18:00 | 4.6 | 1.1 | 0 | 2.4 | ESE | 76 | 1020 |
| 11:00 | 19:00 | 5.8 | 2.8 | 0 | 1.8 | ESE | 75 | 1019 |
| 12:00 | 20:00 | 6.6 | 3.9 | 0 | 1.6 | ESE | 75 | 1018 |
| 13:00 | 21:00 | 7.5 | 4.9 | 0 | 1.5 | ESE | 71 | 1016 |
| 14:00 | 22:00 | 7.5 | 4.3 | 0 | 2.1 | SE | 69 | 1015 |
| 15:00 | 23:00 | 7.5 | 4.8 | 0 | 1.4 | S | 66 | 1014 |
| 16:00 | 00:00 | 7.1 | 4.2 | 0.27 | 1.5 | SSE | 65 | 1014 |
| 17:00 | 01:00 | 6.3 | 3 | 0.45 | 2 | SSE | 67 | 1014 |
| 18:00 | 02:00 | 6 | 1.9 | 0.95 | 3.3 | SE | 73 | 1015 |
| 19:00 | 03:00 | 5.1 | 0.6 | 1.58 | 4.3 | SE | 85 | 1014 |
| 20:00 | 04:00 | 5.2 | 0.3 | 1.87 | 4.8 | SSE | 87 | 1013 |
| 21:00 | 05:00 | 5.5 | 0.5 | 0.32 | 5.1 | SSE | 86 | 1013 |
| 22:00 | 06:00 | 5.8 | 0.8 | 0.3 | 5.2 | SSE | 87 | 1013 |
| 23:00 | 07:00 | 6.3 | 1.2 | 0.12 | 5.3 | SSE | 86 | 1013 |
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 22 December 2018 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Spanaway, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 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 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.