Delta
United States · 18 August 2017
← 17 August 201719 August 2017 →
Average
21.7°C
low 10.5°C · high 32.2°C
Rainfall
0mm
dry day
Wind
1.5m/s
daily average
Humidity
30.5%
daily average
Cloud
9%
cover
Pressure
1015hPa
daily average
The temperature ranged from 10.5°C around 05:00 to 32.2°C around 17:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
61th percentile
Low temperature
4th percentile
Rainfall
52th percentile
Wind
46th 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 22.7°C, versus 21.7°C on this specific day.
Sun & daylight
Sunrise
06:28
Sunset
20:01
Day length
13h 33m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 16.1°C | 13.3°C | 0 | 1.3 | SE | 36 | 1015 |
| 01:00 | 07:00 | 15.6°C | 13°C | 0 | 1.2 | SE | 40 | 1015 |
| 02:00 | 08:00 | 14.4°C | 12°C | 0 | 1 | SE | 42 | 1016 |
| 03:00 | 09:00 | 13.6°C | 11.1°C | 0 | 1.1 | ESE | 45 | 1016 |
| 04:00 | 10:00 | 10.7°C | 7.7°C | 0 | 2 | ESE | 56 | 1017 |
| 05:00 | 11:00 | 10.5°C | 7.6°C | 0 | 1.9 | ESE | 59 | 1018 |
| 06:00 | 12:00 | 10.6°C | 8°C | 0 | 1.6 | ESE | 60 | 1018 |
| 07:00 | 13:00 | 11.5°C | 9°C | 0 | 1.5 | ESE | 58 | 1019 |
| 08:00 | 14:00 | 15.8°C | 13.5°C | 0 | 1.4 | ESE | 45 | 1020 |
| 09:00 | 15:00 | 20°C | 17°C | 0 | 1.1 | SE | 23 | 1019 |
| 10:00 | 16:00 | 22.6°C | 19.8°C | 0 | 1 | SE | 21 | 1018 |
| 11:00 | 17:00 | 26.5°C | 23.7°C | 0 | 0.6 | S | 15 | 1017 |
| 12:00 | 18:00 | 27.9°C | 25.2°C | 0 | 0.7 | W | 15 | 1016 |
| 13:00 | 19:00 | 28.6°C | 25.3°C | 0 | 1.6 | WNW | 15 | 1015 |
| 14:00 | 20:00 | 30.3°C | 26.8°C | 0 | 2.1 | WNW | 14 | 1014 |
| 15:00 | 21:00 | 31.7°C | 28.1°C | 0 | 2.2 | WNW | 12 | 1013 |
| 16:00 | 22:00 | 32°C | 28.7°C | 0 | 1.8 | W | 13 | 1011 |
| 17:00 | 23:00 | 32.2°C | 28.8°C | 0 | 2 | W | 13 | 1011 |
| 18:00 | 00:00 | 31.9°C | 28.2°C | 0 | 2.4 | W | 13 | 1011 |
| 19:00 | 01:00 | 30.3°C | 27.8°C | 0 | 2.7 | W | 23 | 1012 |
| 20:00 | 02:00 | 26.4°C | 23.8°C | 0 | 1.6 | W | 23 | 1012 |
| 21:00 | 03:00 | 21.4°C | 19.3°C | 0 | 0.5 | NNE | 27 | 1013 |
| 22:00 | 04:00 | 20.6°C | 18.5°C | 0 | 0.9 | E | 31 | 1013 |
| 23:00 | 05:00 | 18.9°C | 16.7°C | 0 | 1 | SSE | 36 | 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
- Delta — 38.750°, -108.000°, ERA5 grid cell center, 6.0 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 18 August 2017 specifically — not a monthly average. See the Delta 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 Delta, United States (38.75°N, 108.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Delta, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Delta, 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 Delta, 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.