Home / Tri-Cities / 18 May 2016
Tri-Cities
United States · 18 May 2016
Average
22.4°C
low 14°C · high 30°C
Rainfall
0.1mm
dry day
Wind
3.3m/s
daily average
Humidity
44.9%
daily average
Cloud
61%
cover
Pressure
1011hPa
daily average
The temperature ranged from 14°C around 05:00 to 30°C around 15:00. Rain was recorded for one hour, around 16:00 (0.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
74th percentile
Low temperature
71th percentile
Rainfall
70th percentile
Wind
64th 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 19.5°C, versus 22.4°C on this specific day.
Sun & daylight
Sunrise
05:20
Sunset
20:27
Day length
15h 8m
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 | 07:00 | 20.5°C | 19.4°C | 0 | 1.8 | S | 53 | 1015 |
| 01:00 | 08:00 | 18.7°C | 17.5°C | 0 | 1.9 | SSW | 59 | 1015 |
| 02:00 | 09:00 | 16.7°C | 15.6°C | 0 | 2 | SSW | 68 | 1015 |
| 03:00 | 10:00 | 14.2°C | 12.8°C | 0 | 1.7 | SW | 73 | 1015 |
| 04:00 | 11:00 | 14.3°C | 12.9°C | 0 | 2 | SW | 76 | 1015 |
| 05:00 | 12:00 | 14°C | 12.8°C | 0 | 2.1 | SW | 80 | 1015 |
| 06:00 | 13:00 | 14.4°C | 13.6°C | 0 | 1.5 | SSW | 79 | 1015 |
| 07:00 | 14:00 | 15.7°C | 14.9°C | 0 | 1.4 | SSW | 71 | 1015 |
| 08:00 | 15:00 | 20.7°C | 18.9°C | 0 | 1.5 | SSW | 40 | 1015 |
| 09:00 | 16:00 | 22.6°C | 20.7°C | 0 | 1.9 | SSW | 37 | 1015 |
| 10:00 | 17:00 | 24.2°C | 21.8°C | 0 | 2.6 | SSW | 34 | 1014 |
| 11:00 | 18:00 | 25.5°C | 22.8°C | 0 | 3.3 | SSW | 34 | 1013 |
| 12:00 | 19:00 | 26.3°C | 23.5°C | 0 | 3.6 | SSW | 33 | 1012 |
| 13:00 | 20:00 | 27.4°C | 24.5°C | 0 | 3.9 | SSW | 32 | 1011 |
| 14:00 | 21:00 | 29.5°C | 26.1°C | 0 | 4.4 | SSW | 27 | 1010 |
| 15:00 | 22:00 | 30°C | 26.7°C | 0 | 4.3 | SW | 27 | 1008 |
| 16:00 | 23:00 | 29.3°C | 25.5°C | 0.14 | 5.2 | SW | 28 | 1007 |
| 17:00 | 00:00 | 29.5°C | 24.5°C | 0 | 6.2 | WSW | 25 | 1007 |
| 18:00 | 01:00 | 28.9°C | 23°C | 0 | 6.7 | WSW | 21 | 1006 |
| 19:00 | 02:00 | 28°C | 23°C | 0 | 5.5 | W | 23 | 1006 |
| 20:00 | 03:00 | 23.8°C | 20.6°C | 0 | 4 | W | 38 | 1006 |
| 21:00 | 04:00 | 22.4°C | 19.2°C | 0 | 3.3 | WSW | 36 | 1007 |
| 22:00 | 05:00 | 20.6°C | 17.4°C | 0 | 3.7 | WSW | 43 | 1007 |
| 23:00 | 06:00 | 19.6°C | 16°C | 0 | 4 | WSW | 43 | 1007 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Tri-Cities — 46.250°, -119.250°, ERA5 grid cell center, 4.2 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 18 May 2016 specifically — not a monthly average. See the Tri-Cities 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 Tri-Cities, United States (46.25°N, 119.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Tri-Cities, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Tri-Cities, 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 Tri-Cities, 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.