Home / Seffner / 28 September 2021
Seffner
United States · 28 September 2021
← 27 September 202129 September 2021 →
Average
25.3°C
low 19.4°C · high 30.5°C
Rainfall
0mm
dry day
Wind
2.2m/s
daily average
Humidity
64.3%
daily average
Cloud
45%
cover
Pressure
1017hPa
daily average
The temperature ranged from 19.4°C around 06:00 to 30.5°C around 15:00. 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
26th percentile
Low temperature
6th percentile
Rainfall
18th percentile
Wind
37th 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 26.4°C, versus 25.3°C on this specific day.
Sun & daylight
Sunrise
07:20
Sunset
19:18
Day length
11h 58m
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 | 24.4°C | 25.2°C | 0 | 2.8 | ESE | 67 | 1018 |
| 01:00 | 05:00 | 23.5°C | 24.7°C | 0 | 2.4 | ESE | 72 | 1018 |
| 02:00 | 06:00 | 22.5°C | 24°C | 0 | 2 | ESE | 78 | 1017 |
| 03:00 | 07:00 | 21.6°C | 23.2°C | 0 | 1.7 | ESE | 81 | 1017 |
| 04:00 | 08:00 | 20.9°C | 22.4°C | 0 | 1.9 | ESE | 83 | 1017 |
| 05:00 | 09:00 | 20.3°C | 21.7°C | 0 | 1.9 | ESE | 86 | 1017 |
| 06:00 | 10:00 | 19.4°C | 20.6°C | 0 | 2.2 | ESE | 90 | 1017 |
| 07:00 | 11:00 | 19.7°C | 21.1°C | 0 | 2 | E | 89 | 1017 |
| 08:00 | 12:00 | 20.5°C | 22.4°C | 0 | 1.5 | E | 88 | 1018 |
| 09:00 | 13:00 | 23.4°C | 25.8°C | 0 | 1.5 | E | 78 | 1018 |
| 10:00 | 14:00 | 26.1°C | 28.4°C | 0 | 1.2 | E | 65 | 1019 |
| 11:00 | 15:00 | 28.4°C | 29.6°C | 0 | 2.1 | E | 52 | 1018 |
| 12:00 | 16:00 | 29.2°C | 30.3°C | 0 | 1.9 | ENE | 48 | 1018 |
| 13:00 | 17:00 | 29.9°C | 30.2°C | 0 | 2.8 | NE | 45 | 1018 |
| 14:00 | 18:00 | 30.1°C | 30.4°C | 0 | 2.8 | NE | 45 | 1017 |
| 15:00 | 19:00 | 30.5°C | 30.8°C | 0 | 2.7 | NE | 44 | 1016 |
| 16:00 | 20:00 | 30.4°C | 30.7°C | 0 | 2.9 | NNE | 44 | 1015 |
| 17:00 | 21:00 | 30.5°C | 30.5°C | 0 | 2.9 | NNE | 43 | 1015 |
| 18:00 | 22:00 | 28.9°C | 29.5°C | 0 | 2.3 | NE | 47 | 1015 |
| 19:00 | 23:00 | 27.7°C | 28.8°C | 0 | 1.7 | ENE | 51 | 1015 |
| 20:00 | 00:00 | 26.1°C | 27.1°C | 0 | 1.9 | ENE | 57 | 1015 |
| 21:00 | 01:00 | 25.1°C | 26°C | 0 | 2.1 | ENE | 60 | 1016 |
| 22:00 | 02:00 | 24.5°C | 25.1°C | 0 | 2.6 | E | 63 | 1016 |
| 23:00 | 03:00 | 23.9°C | 24.3°C | 0 | 2.8 | E | 66 | 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
- Seffner — 28.000°, -82.250°, ERA5 grid cell center, 3.1 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 28 September 2021 specifically — not a monthly average. See the Seffner 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 Seffner, United States (28.00°N, 82.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Seffner, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Seffner, 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 Seffner, 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.