Home / Walla Walla / 20 May 2016
Walla Walla
United States · 20 May 2016
Average
9.4°C
low 3.3° · high 14.2°
Rainfall
2mm
rain recorded
Wind
1.8m/s
daily average
Humidity
68.7%
daily average
Cloud
58%
cover
Pressure
1006hPa
daily average
The temperature ranged from 3.3°C around 03:00 to 14.2°C around 14:00. Rain was recorded across 7 hours, from around 14:00 to 20:00 (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
13th percentile
Low temperature
6th percentile
Rainfall
79th percentile
Wind
26th 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 14.1°C, versus 9.4°C on this specific day.
Sun & daylight
Sunrise
05:14
Sunset
20:25
Day length
15h 10m
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 | 7.8 | 4.7 | 0 | 2.1 | S | 66 | 1009 |
| 01:00 | 08:00 | 7.2 | 4.1 | 0 | 2 | S | 69 | 1009 |
| 02:00 | 09:00 | 5.6 | 2.4 | 0 | 2 | SSE | 75 | 1009 |
| 03:00 | 10:00 | 3.3 | 0 | 0 | 2.1 | S | 84 | 1010 |
| 04:00 | 11:00 | 3.6 | 0.6 | 0 | 1.5 | SSE | 83 | 1009 |
| 05:00 | 12:00 | 4.6 | 2 | 0 | 1 | SE | 77 | 1009 |
| 06:00 | 13:00 | 4.1 | 1.8 | 0 | 0.7 | SSE | 82 | 1009 |
| 07:00 | 14:00 | 5.4 | 3.3 | 0 | 0.6 | SSW | 76 | 1009 |
| 08:00 | 15:00 | 8.7 | 6.5 | 0 | 0.5 | W | 59 | 1009 |
| 09:00 | 16:00 | 10.1 | 7.6 | 0 | 1.3 | NNW | 59 | 1008 |
| 10:00 | 17:00 | 11.4 | 8.4 | 0 | 2.1 | N | 55 | 1006 |
| 11:00 | 18:00 | 12.3 | 8.6 | 0 | 3.1 | N | 52 | 1005 |
| 12:00 | 19:00 | 13 | 9.1 | 0.01 | 3.4 | N | 50 | 1005 |
| 13:00 | 20:00 | 13.4 | 9.2 | 0.01 | 3.7 | N | 48 | 1004 |
| 14:00 | 21:00 | 14.2 | 9.9 | 0.48 | 3.6 | NNE | 43 | 1003 |
| 15:00 | 22:00 | 13.7 | 10.2 | 0.15 | 3 | NNE | 52 | 1003 |
| 16:00 | 23:00 | 12.6 | 10.1 | 0.13 | 2.1 | NNE | 61 | 1003 |
| 17:00 | 00:00 | 12.1 | 10.4 | 0.21 | 1 | NE | 63 | 1003 |
| 18:00 | 01:00 | 11.4 | 9.8 | 0.23 | 0.9 | S | 69 | 1003 |
| 19:00 | 02:00 | 11.5 | 9.9 | 0.4 | 1.1 | S | 73 | 1003 |
| 20:00 | 03:00 | 10.1 | 8.6 | 0.28 | 1.4 | SSW | 85 | 1003 |
| 21:00 | 04:00 | 9.7 | 7.8 | 0.09 | 1.8 | S | 87 | 1004 |
| 22:00 | 05:00 | 9.1 | 7.4 | 0 | 1.7 | S | 92 | 1004 |
| 23:00 | 06:00 | 10 | 8.5 | 0 | 1.4 | S | 87 | 1005 |
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 20 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.