Home / Trinity / 18 September 2021
Trinity
United States · 18 September 2021
← 17 September 202119 September 2021 →
Average
24.8°C
low 20.2°C · high 30.4°C
Rainfall
1.7mm
rain recorded
Wind
1.1m/s
daily average
Humidity
79.7%
daily average
Cloud
47%
cover
Pressure
1019hPa
daily average
The temperature ranged from 20.2°C around 05:00 to 30.4°C around 16:00. Rain was recorded across 5 hours, from around 11:00 to 22:00 (1.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
79th percentile
Low temperature
80th percentile
Rainfall
74th percentile
Wind
2th 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 24.8°C on this specific day.
Sun & daylight
Sunrise
07:05
Sunset
19:22
Day length
12h 17m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 22.2°C | 25°C | 0 | 1.6 | E | 90 | 1020 |
| 01:00 | 05:00 | 21.6°C | 24.6°C | 0 | 1.3 | ESE | 93 | 1020 |
| 02:00 | 06:00 | 22°C | 25.7°C | 0 | 0.3 | N | 91 | 1020 |
| 03:00 | 07:00 | 22°C | 25.5°C | 0 | 0.6 | NW | 92 | 1020 |
| 04:00 | 08:00 | 20.7°C | 23.9°C | 0 | 0.8 | NNW | 96 | 1020 |
| 05:00 | 09:00 | 20.2°C | 23.1°C | 0 | 1.1 | N | 97 | 1020 |
| 06:00 | 10:00 | 21°C | 23.9°C | 0 | 1.3 | NNE | 95 | 1020 |
| 07:00 | 11:00 | 21°C | 23.9°C | 0 | 1.4 | ENE | 96 | 1020 |
| 08:00 | 12:00 | 21.2°C | 24.1°C | 0 | 1.3 | ESE | 95 | 1020 |
| 09:00 | 13:00 | 22.5°C | 25.9°C | 0 | 0.8 | SE | 90 | 1020 |
| 10:00 | 14:00 | 24.7°C | 28.4°C | 0.04 | 0.8 | SE | 80 | 1021 |
| 11:00 | 15:00 | 27.1°C | 30.7°C | 0.1 | 0.9 | ENE | 70 | 1021 |
| 12:00 | 16:00 | 28.2°C | 31.6°C | 0.04 | 1.3 | ENE | 67 | 1020 |
| 13:00 | 17:00 | 29°C | 32.1°C | 0.04 | 1.4 | E | 62 | 1020 |
| 14:00 | 18:00 | 30°C | 33.1°C | 0.03 | 1.5 | E | 59 | 1019 |
| 15:00 | 19:00 | 30°C | 32.9°C | 0.03 | 1.4 | ESE | 57 | 1018 |
| 16:00 | 20:00 | 30.4°C | 33.1°C | 0.75 | 1.3 | SE | 54 | 1017 |
| 17:00 | 21:00 | 30.3°C | 32.8°C | 0.13 | 1.2 | SE | 52 | 1017 |
| 18:00 | 22:00 | 27.9°C | 31.3°C | 0.16 | 1.1 | SSW | 66 | 1017 |
| 19:00 | 23:00 | 26.2°C | 29.7°C | 0 | 1.1 | WSW | 74 | 1018 |
| 20:00 | 00:00 | 24.6°C | 28.4°C | 0 | 1 | WNW | 83 | 1018 |
| 21:00 | 01:00 | 24.7°C | 28.4°C | 0.04 | 0.9 | NNE | 82 | 1019 |
| 22:00 | 02:00 | 23.6°C | 27.2°C | 0.25 | 1.1 | ENE | 86 | 1019 |
| 23:00 | 03:00 | 23°C | 26.2°C | 0.09 | 1.2 | ENE | 87 | 1020 |
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
- 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 18 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
PastClimate (2026-07-21). 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/
PastClimate. (2026). Historical climate data for Trinity, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Trinity, 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 Trinity, 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.