Home / American Fork / 18 August 2017
American Fork
United States · 18 August 2017
← 17 August 201719 August 2017 →
Average
21.3°C
low 11.7° · high 30.2°
Rainfall
0mm
dry day
Wind
1.8m/s
daily average
Humidity
42.5%
daily average
Cloud
15%
cover
Pressure
1016hPa
daily average
The temperature ranged from 11.7°C around 07:00 to 30.2°C around 15:00. 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
62th percentile
Low temperature
9th percentile
Rainfall
46th percentile
Wind
47th 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 21.8°C, versus 21.3°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 | 18.1 | 16.6 | 0 | 0.9 | E | 46 | 1016 |
| 01:00 | 07:00 | 17.7 | 16.7 | 0 | 1 | E | 55 | 1016 |
| 02:00 | 08:00 | 15.5 | 14.3 | 0 | 1.1 | E | 62 | 1016 |
| 03:00 | 09:00 | 14.6 | 13.5 | 0 | 1.2 | E | 68 | 1016 |
| 04:00 | 10:00 | 12.2 | 11 | 0 | 1.7 | E | 85 | 1017 |
| 05:00 | 11:00 | 11.9 | 10.9 | 0 | 1.6 | E | 90 | 1017 |
| 06:00 | 12:00 | 12 | 11.1 | 0 | 1.6 | E | 91 | 1017 |
| 07:00 | 13:00 | 11.7 | 10.6 | 0 | 1.8 | E | 91 | 1017 |
| 08:00 | 14:00 | 14.3 | 13 | 0 | 1.8 | ESE | 75 | 1018 |
| 09:00 | 15:00 | 19.8 | 18.4 | 0 | 1.2 | ESE | 45 | 1018 |
| 10:00 | 16:00 | 22 | 20.2 | 0 | 0.7 | S | 31 | 1018 |
| 11:00 | 17:00 | 25.6 | 22.9 | 0 | 1.3 | SW | 21 | 1017 |
| 12:00 | 18:00 | 26.3 | 22.9 | 0 | 2.2 | WSW | 19 | 1017 |
| 13:00 | 19:00 | 26.9 | 23.1 | 0 | 2.8 | WSW | 18 | 1016 |
| 14:00 | 20:00 | 28.7 | 24.9 | 0 | 3 | W | 18 | 1016 |
| 15:00 | 21:00 | 30.2 | 26.1 | 0 | 3.3 | WNW | 15 | 1015 |
| 16:00 | 22:00 | 29.9 | 26.6 | 0 | 2.2 | W | 16 | 1014 |
| 17:00 | 23:00 | 29.9 | 26.1 | 0 | 2.4 | WNW | 14 | 1013 |
| 18:00 | 00:00 | 28.7 | 25.1 | 0 | 2.7 | WNW | 18 | 1013 |
| 19:00 | 01:00 | 27.8 | 24.2 | 0 | 2.9 | NNW | 20 | 1013 |
| 20:00 | 02:00 | 25 | 22.6 | 0 | 2 | N | 29 | 1013 |
| 21:00 | 03:00 | 22.7 | 19.7 | 0 | 1.7 | N | 25 | 1014 |
| 22:00 | 04:00 | 21.3 | 18.9 | 0 | 1.3 | NE | 30 | 1014 |
| 23:00 | 05:00 | 18.4 | 16.5 | 0 | 0.9 | E | 40 | 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
- American Fork — 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 2017 specifically — not a monthly average. See the American Fork 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 American Fork, 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 American Fork, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for American Fork, 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 American Fork, 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.