Home / Trinity / 17 September 2021

Trinity

United States · 17 September 2021

TrinityUnited States7:13 AM localChange location

← 16 September 202118 September 2021 →

Average

24.4°C

low 21.6° · high 29.2°

Rainfall

0.7mm

dry day

Wind

2.1m/s

daily average

Humidity

78.6%

daily average

Cloud

68%

cover

Pressure

1020hPa

daily average

The temperature ranged from 21.6°C around 05:00 to 29.2°C around 17:00. Rain was recorded across 2 hours, from around 10:00 to 11:00 (0.7mm total).

How unusual was this day?

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

High temperature

69th percentile

Low temperature

87th percentile

Rainfall

64th percentile

Wind

50th 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 22°C, versus 24.4°C on this specific day.

Sun & daylight

Sunrise

07:04

Sunset

19:23

Day length

12h 20m

Hour by hour

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

↓ 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
00:0004:0023.125.60.011.7NE831020
01:0005:0022.424.901.8NE871020
02:0006:0022.525.10.011.7NNE881019
03:0007:0022.224.50.062.3NNE901019
04:0008:0021.823.90.032.5NNE911019
05:0009:0021.623.702.5NE931019
06:0010:0021.92501.8NE961020
07:0011:002224.80.022.2NE961020
08:0012:0022.224.90.042.4NE951021
09:0013:0022.224.50.093.1NE951021
10:0014:0022.624.50.133.5NE931022
11:0015:0023.925.50.153.7NE841022
12:0016:0025.627.20.092.9NE711022
13:0017:0027.228.90.012.6NE631021
14:0018:0027.229.102.2NE621021
15:0019:0027.929.90.031.8NE591020
16:0020:0028.930.801.7NE551019
17:0021:0029.230.801.7NE511018
18:0022:0027.930.50.011.1NW601019
19:0023:0026.829.800.6N631018
20:0000:0025.328.101NNE711019
21:0001:0024.527.101.5NE761020
22:0002:002426.601.8ENE791020
23:0003:0022.925.501.9E861020

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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
Trinity — 36.000°, -80.000°, ERA5 grid cell center, 11.8 km from requested point
Time zone
America/New_York
What's shown here
The hourly and daily record for 17 September 2021 specifically — not a monthly average. See the Trinity 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 Trinity, United States (36.00°N, 80.00°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 Trinity, 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 Trinity, 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 Trinity, 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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