Home / Cottonwood Heights / 18 August 2021
Cottonwood Heights
United States · 18 August 2021
← 17 August 202119 August 2021 →
Average
14.4°C
low 10.1° · high 19.6°
Rainfall
26.9mm
rain recorded
Wind
2.5m/s
daily average
Humidity
84.3%
daily average
Cloud
80%
cover
Pressure
1010hPa
daily average
The temperature ranged from 10.1°C around 22:00 to 19.6°C around 00:00. Rain was recorded across 21 hours, from around 01:00 to 23:00 (26.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
1th percentile
Low temperature
2th percentile
Rainfall
100th percentile
Wind
84th 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 21.9°C, versus 14.4°C on this specific day.
Sun & daylight
Sunrise
06:40
Sunset
20:19
Day length
13h 39m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 19.6 | 17.7 | 0 | 2.8 | SE | 54 | 1005 |
| 01:00 | 07:00 | 19.4 | 17.6 | 0.54 | 2.9 | SE | 57 | 1005 |
| 02:00 | 08:00 | 18.3 | 16.7 | 0 | 2.5 | SE | 60 | 1005 |
| 03:00 | 09:00 | 17.3 | 16.3 | 0 | 1.7 | ESE | 65 | 1005 |
| 04:00 | 10:00 | 15.5 | 13.9 | 0.23 | 2.8 | SE | 75 | 1009 |
| 05:00 | 11:00 | 15 | 13.2 | 3.17 | 3.4 | SSE | 81 | 1009 |
| 06:00 | 12:00 | 14.7 | 13.1 | 5.15 | 3.2 | SSE | 84 | 1009 |
| 07:00 | 13:00 | 14.1 | 12.9 | 4.26 | 2.6 | SSE | 88 | 1009 |
| 08:00 | 14:00 | 13.5 | 12.8 | 1.48 | 1.9 | SE | 90 | 1010 |
| 09:00 | 15:00 | 13.8 | 13 | 0.55 | 2.1 | SSE | 88 | 1011 |
| 10:00 | 16:00 | 14.1 | 12.7 | 0.62 | 3.1 | SSE | 89 | 1011 |
| 11:00 | 17:00 | 15.6 | 14.4 | 0.24 | 3.1 | S | 86 | 1012 |
| 12:00 | 18:00 | 16.4 | 15.2 | 0.28 | 3.3 | S | 84 | 1011 |
| 13:00 | 19:00 | 16.5 | 15.8 | 0.46 | 2.7 | SSW | 84 | 1010 |
| 14:00 | 20:00 | 14.8 | 14.2 | 0.73 | 2.1 | SW | 89 | 1009 |
| 15:00 | 21:00 | 14.2 | 13.1 | 3.97 | 3 | W | 94 | 1011 |
| 16:00 | 22:00 | 13.1 | 11.2 | 1.07 | 3.9 | NW | 97 | 1013 |
| 17:00 | 23:00 | 12.4 | 10 | 0.54 | 4.1 | NW | 95 | 1013 |
| 18:00 | 00:00 | 12.1 | 10.6 | 0.1 | 2.7 | NNW | 95 | 1014 |
| 19:00 | 01:00 | 12.1 | 10.9 | 0.61 | 2.1 | NW | 93 | 1013 |
| 20:00 | 02:00 | 11.4 | 10.6 | 0.18 | 1.5 | WNW | 94 | 1014 |
| 21:00 | 03:00 | 10.2 | 9.7 | 0.86 | 0.5 | WSW | 94 | 1014 |
| 22:00 | 04:00 | 10.1 | 9 | 0.9 | 1.2 | SSW | 92 | 1014 |
| 23:00 | 05:00 | 10.3 | 9.5 | 0.97 | 1.1 | WSW | 95 | 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
- Cottonwood Heights — 40.500°, -111.750°, ERA5 grid cell center, 14.2 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 18 August 2021 specifically — not a monthly average. See the Cottonwood Heights 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 (2026-07-16). Historical climate data for Cottonwood Heights, United States (40.50°N, 111.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Cottonwood Heights, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cottonwood Heights, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Cottonwood Heights, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.