Home / Prosper / 21 September 2018

Prosper

United States · 21 September 2018

ProsperUnited States2:32 AM localChange location

← 20 September 201822 September 2018 →

Average

24.5°C

low 23.1° · high 26.7°

Rainfall

48mm

rain recorded

Wind

3.1m/s

daily average

Humidity

92.5%

daily average

Cloud

91%

cover

Pressure

1013hPa

daily average

The temperature ranged from 23.1°C around 01:00 to 26.7°C around 15:00. Rain was recorded across 21 hours, from around 03:00 to 23:00 (48mm total).

How unusual was this day?

Compared against the same 135 calendar days (±7 days) across the other 9 years on file.

High temperature

9th percentile

Low temperature

73th percentile

Rainfall

100th percentile

Wind

61th 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 26.3°C, versus 24.5°C on this specific day.

Sun & daylight

Sunrise

07:14

Sunset

19:24

Day length

12h 10m

Hour by hour

Temperature (line) and hourly rainfall (bars), local time — America/Chicago.

↓ Download CSV
00:0006:0012:0018:0023:00

Cumulative rainfall through the day.

00:0006:0012:0018:0023:00
Local timeUTCTemp °CFeels °CRain mmWind m/sDirHumidity %Pressure hPa
00:0005:0023.325.403.4S911014
01:0006:0023.125.103.4SSE911014
02:0007:0023.325.60.023.1SSE901013
03:0008:0023.726.20.123.1SSE901013
04:0009:0023.626.10.413.3S931013
05:0010:0024.126.81.093.8S941013
06:0011:0024.226.823.6SSE931013
07:0012:0024.227.33.253SSE931014
08:0013:0024.327.72.482.6SSE921014
09:0014:0024.327.73.672.8SSE931014
10:0015:0024.927.60.774.1SSE921015
11:0016:0025.628.61.264S921015
12:0017:0026.329.42.024.2S901015
13:0018:0026.329.82.073.9S911014
14:0019:0026.229.52.623.9S901014
15:0020:0026.731.22.133.3S941013
16:0021:0026.431.43.322.4SSE941012
17:0022:0024.4282.512.7SE941012
18:0023:0024.427.72.873ESE941012
19:0000:0024.628.13.782.7E931013
20:0001:0024.3283.392.1ENE911013
21:0002:0023.927.33.312.2ENE931014
22:0003:0023.627.12.142.4ENE961014
23:0004:0023.226.42.732.5ENE961014

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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 21 September 2018 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

Plain text
PastClimate (2026-07-17). 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/
APA
PastClimate. (2026). Historical climate data for Prosper, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
MLA
"Historical Climate Data for Prosper, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
BibTeX
@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 2026-07-17},
  url = {https://www.pastclimate.com/}
}

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