Home / Prosper / 22 September 2021
Prosper
United States · 22 September 2021
← 21 September 202123 September 2021 →
Average
21.2°C
low 13.8°C · high 27.8°C
Rainfall
0mm
dry day
Wind
2.9m/s
daily average
Humidity
40.4%
daily average
Cloud
7%
cover
Pressure
1024hPa
daily average
The temperature ranged from 13.8°C around 06:00 to 27.8°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
19th percentile
Low temperature
1th percentile
Rainfall
46th percentile
Wind
49th 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 26°C, versus 21.2°C on this specific day.
Sun & daylight
Sunrise
07:15
Sunset
19:23
Day length
12h 8m
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 | 20.1°C | 15.9°C | 0 | 4.6 | NNE | 38 | 1025 |
| 01:00 | 06:00 | 19.2°C | 15.6°C | 0 | 3.8 | NNE | 41 | 1025 |
| 02:00 | 07:00 | 18.2°C | 15.2°C | 0 | 3 | NNE | 45 | 1025 |
| 03:00 | 08:00 | 17.2°C | 14.8°C | 0 | 2.2 | N | 49 | 1025 |
| 04:00 | 09:00 | 16.9°C | 14.8°C | 0 | 1.9 | N | 51 | 1026 |
| 05:00 | 10:00 | 13.9°C | 12°C | 0 | 2.2 | N | 69 | 1026 |
| 06:00 | 11:00 | 13.8°C | 12°C | 0 | 2.1 | NNW | 69 | 1027 |
| 07:00 | 12:00 | 13.9°C | 12.2°C | 0 | 1.9 | NNW | 69 | 1027 |
| 08:00 | 13:00 | 14.6°C | 12.5°C | 0 | 2.6 | NNW | 68 | 1027 |
| 09:00 | 14:00 | 18.5°C | 16.2°C | 0 | 2.9 | N | 54 | 1027 |
| 10:00 | 15:00 | 21.5°C | 18.8°C | 0 | 3.1 | N | 42 | 1027 |
| 11:00 | 16:00 | 23.4°C | 20.6°C | 0 | 2.9 | NNE | 35 | 1027 |
| 12:00 | 17:00 | 25.5°C | 22.2°C | 0 | 3.3 | NNE | 28 | 1027 |
| 13:00 | 18:00 | 26.4°C | 22.7°C | 0 | 3.6 | NNE | 25 | 1026 |
| 14:00 | 19:00 | 26.9°C | 22.9°C | 0 | 3.8 | N | 23 | 1025 |
| 15:00 | 20:00 | 27.5°C | 23.3°C | 0 | 4 | N | 22 | 1023 |
| 16:00 | 21:00 | 27.8°C | 23.5°C | 0 | 4.2 | N | 21 | 1022 |
| 17:00 | 22:00 | 27.4°C | 23.4°C | 0 | 3.6 | N | 21 | 1021 |
| 18:00 | 23:00 | 26.9°C | 23°C | 0 | 3.5 | NNE | 22 | 1021 |
| 19:00 | 00:00 | 25.9°C | 22.9°C | 0 | 1.9 | NNE | 21 | 1020 |
| 20:00 | 01:00 | 23°C | 20.3°C | 0 | 2.2 | NE | 30 | 1020 |
| 21:00 | 02:00 | 21.2°C | 18.9°C | 0 | 1.9 | NE | 37 | 1020 |
| 22:00 | 03:00 | 19.7°C | 17.5°C | 0 | 2 | ENE | 42 | 1021 |
| 23:00 | 04:00 | 18.9°C | 16.7°C | 0 | 2.3 | ENE | 47 | 1021 |
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
- Prosper — 33.250°, -96.750°, ERA5 grid cell center, 5.0 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 22 September 2021 specifically — not a monthly average. See the Prosper 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 Prosper, United States (33.25°N, 96.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Prosper, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Prosper, 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 Prosper, 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.