Home / Roy / 23 September 2020
Roy
United States · 23 September 2020
← 22 September 202024 September 2020 →
Average
20°C
low 12.1°C · high 26.6°C
Rainfall
0mm
dry day
Wind
1.7m/s
daily average
Humidity
32.8%
daily average
Cloud
36%
cover
Pressure
1016hPa
daily average
The temperature ranged from 12.1°C around 07:00 to 26.6°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
84th percentile
Low temperature
80th percentile
Rainfall
65th percentile
Wind
44th 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 15.7°C, versus 20°C on this specific day.
Sun & daylight
Sunrise
07:17
Sunset
19:22
Day length
12h 5m
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 | 19°C | 15.4°C | 0 | 2.1 | SE | 27 | 1013 |
| 01:00 | 07:00 | 21.2°C | 18.4°C | 0 | 1.3 | ESE | 26 | 1014 |
| 02:00 | 08:00 | 19.4°C | 17.1°C | 0 | 0.9 | E | 30 | 1015 |
| 03:00 | 09:00 | 17.1°C | 14.7°C | 0 | 1.4 | E | 41 | 1015 |
| 04:00 | 10:00 | 12.3°C | 9.2°C | 0 | 2.2 | E | 51 | 1016 |
| 05:00 | 11:00 | 12.1°C | 9.4°C | 0 | 1.9 | E | 55 | 1017 |
| 06:00 | 12:00 | 12.5°C | 10°C | 0 | 1.8 | E | 58 | 1017 |
| 07:00 | 13:00 | 12.1°C | 9.6°C | 0 | 1.7 | E | 58 | 1018 |
| 08:00 | 14:00 | 13.2°C | 11.1°C | 0 | 1.1 | E | 54 | 1019 |
| 09:00 | 15:00 | 16.9°C | 14.4°C | 0 | 1.7 | ESE | 42 | 1019 |
| 10:00 | 16:00 | 21°C | 19.1°C | 0 | 1.6 | SSE | 40 | 1019 |
| 11:00 | 17:00 | 23.3°C | 20.8°C | 0 | 1.9 | SSW | 30 | 1019 |
| 12:00 | 18:00 | 24°C | 21°C | 0 | 2.2 | SW | 26 | 1018 |
| 13:00 | 19:00 | 25°C | 21.7°C | 0 | 2.7 | WSW | 26 | 1018 |
| 14:00 | 20:00 | 25.6°C | 22.1°C | 0 | 2.8 | WSW | 23 | 1018 |
| 15:00 | 21:00 | 26.3°C | 22.8°C | 0 | 2.5 | WSW | 21 | 1017 |
| 16:00 | 22:00 | 26.3°C | 23.6°C | 0 | 1.2 | SSW | 19 | 1016 |
| 17:00 | 23:00 | 26.6°C | 23.8°C | 0 | 1.2 | SSW | 18 | 1015 |
| 18:00 | 00:00 | 26.1°C | 23.3°C | 0 | 1 | SSW | 17 | 1015 |
| 19:00 | 01:00 | 25.7°C | 22.9°C | 0 | 0.7 | SE | 16 | 1015 |
| 20:00 | 02:00 | 22.5°C | 19.5°C | 0 | 1.3 | E | 21 | 1015 |
| 21:00 | 03:00 | 19.2°C | 16°C | 0 | 1.9 | E | 29 | 1015 |
| 22:00 | 04:00 | 17.7°C | 14.2°C | 0 | 2.1 | E | 30 | 1014 |
| 23:00 | 05:00 | 16.1°C | 12.3°C | 0 | 2.3 | E | 31 | 1014 |
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
- Roy — 41.250°, -112.000°, ERA5 grid cell center, 10.1 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 23 September 2020 specifically — not a monthly average. See the Roy 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 Roy, United States (41.25°N, 112.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Roy, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roy, 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 Roy, 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.