Home / Stapleton / 18 April 2021
Stapleton
United States · 18 April 2021
← 17 April 202119 April 2021 →
Average
7.9°C
low -2.5°C · high 17.8°C
Rainfall
0.1mm
dry day
Wind
3.1m/s
daily average
Humidity
57%
daily average
Cloud
24%
cover
Pressure
1017hPa
daily average
The temperature ranged from -2.5°C around 07:00 to 17.8°C around 18:00. 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
56th percentile
Low temperature
21th percentile
Rainfall
52th percentile
Wind
11th 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 9°C, versus 7.9°C on this specific day.
Sun & daylight
Sunrise
06:57
Sunset
20:26
Day length
13h 29m
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 | 1.3°C | -1.7°C | 0 | 1.4 | W | 88 | 1022 |
| 01:00 | 06:00 | 0.1°C | -3.2°C | 0 | 1.7 | W | 89 | 1022 |
| 02:00 | 07:00 | -0.3°C | -4.2°C | 0 | 2.4 | W | 91 | 1022 |
| 03:00 | 08:00 | -1.1°C | -5.3°C | 0 | 2.7 | W | 92 | 1022 |
| 04:00 | 09:00 | -1.6°C | -5.9°C | 0 | 2.7 | W | 89 | 1021 |
| 05:00 | 10:00 | -2°C | -6.2°C | 0 | 2.6 | W | 92 | 1021 |
| 06:00 | 11:00 | -2.3°C | -6.5°C | 0 | 2.5 | W | 91 | 1020 |
| 07:00 | 12:00 | -2.5°C | -6.9°C | 0 | 2.7 | W | 89 | 1020 |
| 08:00 | 13:00 | -2°C | -7°C | 0 | 3.5 | W | 85 | 1020 |
| 09:00 | 14:00 | 2.1°C | -2.5°C | 0 | 3.2 | W | 73 | 1019 |
| 10:00 | 15:00 | 9.8°C | 5.4°C | 0 | 3.2 | W | 47 | 1019 |
| 11:00 | 16:00 | 12.2°C | 7.9°C | 0 | 3.1 | W | 41 | 1017 |
| 12:00 | 17:00 | 14.7°C | 10.1°C | 0 | 3.4 | WNW | 32 | 1016 |
| 13:00 | 18:00 | 15.2°C | 10.3°C | 0 | 3.8 | NW | 30 | 1015 |
| 14:00 | 19:00 | 15.9°C | 11.1°C | 0.05 | 3.7 | NW | 28 | 1014 |
| 15:00 | 20:00 | 16.3°C | 11.2°C | 0.05 | 4 | NW | 27 | 1014 |
| 16:00 | 21:00 | 17.2°C | 12.3°C | 0.01 | 3.7 | NW | 26 | 1013 |
| 17:00 | 22:00 | 17°C | 11.4°C | 0 | 4.6 | NNW | 26 | 1012 |
| 18:00 | 23:00 | 17.8°C | 12.5°C | 0 | 3.9 | NNW | 22 | 1011 |
| 19:00 | 00:00 | 17.7°C | 14.1°C | 0 | 1.6 | NW | 21 | 1011 |
| 20:00 | 01:00 | 16.4°C | 13.5°C | 0 | 1.3 | WNW | 33 | 1011 |
| 21:00 | 02:00 | 11.7°C | 8.1°C | 0.03 | 2.2 | NW | 41 | 1012 |
| 22:00 | 03:00 | 8.5°C | 3.7°C | 0 | 3.8 | N | 53 | 1013 |
| 23:00 | 04:00 | 7.3°C | 0.4°C | 0 | 7.2 | NNE | 63 | 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
- Stapleton — 41.500°, -100.500°, ERA5 grid cell center, 2.4 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 18 April 2021 specifically — not a monthly average. See the Stapleton 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 Stapleton, United States (41.50°N, 100.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Stapleton, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Stapleton, 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 Stapleton, 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.