Home / Ames / 4 September 2017
Ames
United States · 4 September 2017
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Average
21.5°C
low 15.4°C · high 23.8°C
Rainfall
0mm
dry day
Wind
5.9m/s
daily average
Humidity
64.7%
daily average
Cloud
45%
cover
Pressure
1011hPa
daily average
The temperature ranged from 15.4°C around 23:00 to 23.8°C around 16:00. 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
26th percentile
Low temperature
56th percentile
Rainfall
54th percentile
Wind
96th 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 20.5°C, versus 21.5°C on this specific day.
Sun & daylight
Sunrise
06:42
Sunset
19:42
Day length
12h 59m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 22.2°C | 19.6°C | 0 | 6.6 | SSW | 69 | 1010 |
| 01:00 | 06:00 | 22.1°C | 20°C | 0 | 6.3 | SSW | 73 | 1009 |
| 02:00 | 07:00 | 22.5°C | 20.9°C | 0 | 6.2 | SW | 75 | 1008 |
| 03:00 | 08:00 | 22.6°C | 21°C | 0 | 6.3 | SW | 75 | 1008 |
| 04:00 | 09:00 | 23.1°C | 21.7°C | 0 | 6.2 | SW | 74 | 1007 |
| 05:00 | 10:00 | 21.8°C | 19.6°C | 0 | 7.2 | WSW | 79 | 1007 |
| 06:00 | 11:00 | 22°C | 20.4°C | 0 | 6 | WSW | 76 | 1007 |
| 07:00 | 12:00 | 21.5°C | 20.4°C | 0 | 4.9 | W | 75 | 1007 |
| 08:00 | 13:00 | 21.6°C | 20.7°C | 0 | 4.6 | NW | 74 | 1009 |
| 09:00 | 14:00 | 21.4°C | 19.7°C | 0 | 6.5 | NNW | 81 | 1010 |
| 10:00 | 15:00 | 22.9°C | 20.6°C | 0 | 6.3 | N | 66 | 1010 |
| 11:00 | 16:00 | 23.1°C | 19.7°C | 0 | 6.6 | N | 57 | 1011 |
| 12:00 | 17:00 | 22.9°C | 19°C | 0 | 6.4 | N | 49 | 1012 |
| 13:00 | 18:00 | 22.9°C | 19.5°C | 0 | 5.7 | NNW | 49 | 1012 |
| 14:00 | 19:00 | 23.1°C | 20°C | 0 | 5.5 | NNW | 51 | 1012 |
| 15:00 | 20:00 | 23.4°C | 20.3°C | 0 | 5.7 | NNW | 52 | 1012 |
| 16:00 | 21:00 | 23.8°C | 20.1°C | 0 | 5.9 | NW | 46 | 1012 |
| 17:00 | 22:00 | 21.8°C | 18.4°C | 0 | 5.9 | NW | 56 | 1013 |
| 18:00 | 23:00 | 20.5°C | 17.9°C | 0 | 4.6 | NW | 58 | 1013 |
| 19:00 | 00:00 | 20.2°C | 17.6°C | 0 | 4.5 | WNW | 58 | 1013 |
| 20:00 | 01:00 | 19.7°C | 16.2°C | 0 | 5.7 | WNW | 60 | 1013 |
| 21:00 | 02:00 | 19°C | 15.1°C | 0 | 6.2 | NNW | 62 | 1014 |
| 22:00 | 03:00 | 15.9°C | 12°C | 0 | 5.6 | NNW | 68 | 1015 |
| 23:00 | 04:00 | 15.4°C | 11.8°C | 0 | 5 | NNW | 68 | 1016 |
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
- Ames — 42.000°, -93.500°, ERA5 grid cell center, 10.6 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 4 September 2017 specifically — not a monthly average. See the Ames 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 Ames, United States (42.00°N, 93.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ames, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ames, 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 Ames, 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.