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Spanaway

United States · 20 December 2021

SpanawayUnited States4:12 AM localChange location

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Average

2.9°C

low 2.2° · high 3.9°

Rainfall

10.1mm

rain recorded

Wind

2m/s

daily average

Humidity

90.6%

daily average

Cloud

100%

cover

Pressure

1018hPa

daily average

The temperature ranged from 2.2°C around 07:00 to 3.9°C around 18:00. Rain was recorded across 17 hours, from around 02:00 to 18:00 (10.1mm total).

How unusual was this day?

Compared against the same 135 calendar days (±7 days) across the other 9 years on file.

High temperature

17th percentile

Low temperature

40th percentile

Rainfall

74th percentile

Wind

33th 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 5.1°C, versus 2.9°C on this specific day.

Sun & daylight

Sunrise

07:52

Sunset

16:23

Day length

8h 31m

Hour by hour

Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.

↓ Download CSV
00:0006:0012:0018:0023:00

Cumulative rainfall through the day.

00:0006:0012:0018:0023:00
Local timeUTCTemp °CFeels °CRain mmWind m/sDirHumidity %Pressure hPa
00:0008:002.6-10.012.1ENE771015
01:0009:002.6-0.70.041.8ENE781015
02:0010:002.6-1.10.132.3ENE761015
03:0011:002.5-0.90.221.9ENE771015
04:0012:002.8-0.70.332.1ENE801015
05:0013:002.5-0.90.341.9NE841015
06:0014:002.4-0.90.582NE871015
07:0015:002.2-10.812.1NE931015
08:0016:002.3-11.042.1NE951015
09:0017:002.6-0.71.42.3NE971016
10:0018:002.5-0.91.572.4NE971017
11:0019:002.4-0.70.552.1NE971018
12:0020:002.6-0.50.472NE961018
13:0021:002.7-0.50.542.1NE951018
14:0022:003.10.20.651.9NE961018
15:0023:003.30.50.561.7NE941019
16:0000:003.71.10.381.5NNE931019
17:0001:003.91.20.231.6N921019
18:0002:003.90.70.112.4NNE941020
19:0003:003.50.10.052.6NNE961021
20:0004:003.40.10.032.5NNE961021
21:0005:003.20.30.012NNE961021
22:0006:003.40.60.021.7NNE951021
23:0007:003.50.60.031.9NNE951022

Same date, other years

202520242023202220202019201820172016

Nearby cities

Elk Plain

0km away, same day

Joint Base Lewis McChord

0km away, same day

Yelm

0km away, same day

North Yelm

0km away, same day

North Fort Lewis

0km away, same day

Lacey

19km away, same day

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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 20 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

Plain text
PastClimate (2026-07-17). 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/
APA
PastClimate. (2026). Historical climate data for Spanaway, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
MLA
"Historical Climate Data for Spanaway, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
BibTeX
@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 2026-07-17},
  url = {https://www.pastclimate.com/}
}

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