Home / Walla Walla / 21 May 2016
Walla Walla
United States · 21 May 2016
Average
10.2°C
low 6.6° · high 13.4°
Rainfall
2.5mm
rain recorded
Wind
2.3m/s
daily average
Humidity
72.8%
daily average
Cloud
87%
cover
Pressure
1007hPa
daily average
The temperature ranged from 6.6°C around 06:00 to 13.4°C around 14:00. Rain was recorded across 8 hours, from around 00:00 to 19:00 (2.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
6th percentile
Low temperature
31th percentile
Rainfall
81th percentile
Wind
50th 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 14.3°C, versus 10.2°C on this specific day.
Sun & daylight
Sunrise
05:13
Sunset
20:26
Day length
15h 12m
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 | 07:00 | 10.2 | 8.8 | 0.19 | 1.3 | S | 84 | 1004 |
| 01:00 | 08:00 | 9.6 | 8 | 0.17 | 1.3 | S | 84 | 1005 |
| 02:00 | 09:00 | 10 | 8.2 | 0.02 | 1.3 | SSE | 78 | 1005 |
| 03:00 | 10:00 | 7.1 | 5.2 | 0.04 | 1.2 | SE | 89 | 1004 |
| 04:00 | 11:00 | 7.3 | 5.1 | 0.02 | 1.6 | SE | 89 | 1005 |
| 05:00 | 12:00 | 6.6 | 4.7 | 0 | 1.3 | SE | 91 | 1005 |
| 06:00 | 13:00 | 6.6 | 4.6 | 0 | 1.3 | SE | 92 | 1005 |
| 07:00 | 14:00 | 8 | 6 | 0 | 1.6 | SSE | 90 | 1006 |
| 08:00 | 15:00 | 10.8 | 8.6 | 0.02 | 1.6 | SSW | 70 | 1007 |
| 09:00 | 16:00 | 11.2 | 9 | 0.04 | 1.5 | SW | 66 | 1007 |
| 10:00 | 17:00 | 12 | 10 | 0.03 | 1.3 | WSW | 63 | 1006 |
| 11:00 | 18:00 | 11.9 | 10.1 | 1 | 1.2 | SW | 66 | 1006 |
| 12:00 | 19:00 | 11.8 | 9.7 | 0.05 | 1.5 | SW | 64 | 1006 |
| 13:00 | 20:00 | 12.7 | 10.7 | 0.13 | 1.5 | SW | 65 | 1006 |
| 14:00 | 21:00 | 13.4 | 11.1 | 0.12 | 1.6 | WSW | 56 | 1006 |
| 15:00 | 22:00 | 13.2 | 10.7 | 0.03 | 2.1 | WSW | 59 | 1006 |
| 16:00 | 23:00 | 12.7 | 9.4 | 0.02 | 2.7 | WSW | 53 | 1006 |
| 17:00 | 00:00 | 11.7 | 7.3 | 0.22 | 4.3 | WSW | 56 | 1007 |
| 18:00 | 01:00 | 11.1 | 6.7 | 0.14 | 4.5 | SW | 63 | 1008 |
| 19:00 | 02:00 | 10.3 | 6.6 | 0.16 | 3.5 | SW | 69 | 1008 |
| 20:00 | 03:00 | 9.1 | 5.4 | 0.07 | 3.6 | SSW | 74 | 1009 |
| 21:00 | 04:00 | 9.1 | 5.3 | 0.03 | 3.9 | SSW | 75 | 1010 |
| 22:00 | 05:00 | 8.8 | 4.5 | 0.02 | 4.5 | SSW | 77 | 1010 |
| 23:00 | 06:00 | 8.6 | 4.1 | 0.01 | 4.7 | SSW | 76 | 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
- Walla Walla — 46.000°, -118.250°, ERA5 grid cell center, 10.2 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 21 May 2016 specifically — not a monthly average. See the Walla Walla 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 Walla Walla, United States (46.00°N, 118.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Walla Walla, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Walla Walla, 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 Walla Walla, 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.