Home / Sylva / 25 September 2017
Sylva
United States · 25 September 2017
← 24 September 201726 September 2017 →
Average
18.9°C
low 13.7° · high 25.6°
Rainfall
0mm
dry day
Wind
1.2m/s
daily average
Humidity
74.9%
daily average
Cloud
53%
cover
Pressure
1017hPa
daily average
The temperature ranged from 13.7°C around 05:00 to 25.6°C around 17:00. 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
81th percentile
Low temperature
57th percentile
Rainfall
37th percentile
Wind
33th 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 17.1°C, versus 18.9°C on this specific day.
Sun & daylight
Sunrise
07:23
Sunset
19:25
Day length
12h 2m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 16 | 16.7 | 0 | 1.3 | NE | 93 | 1018 |
| 01:00 | 05:00 | 15.6 | 16.2 | 0 | 1.4 | NE | 95 | 1018 |
| 02:00 | 06:00 | 14.7 | 14.9 | 0 | 1.4 | NE | 95 | 1018 |
| 03:00 | 07:00 | 14.6 | 14.9 | 0 | 1.3 | NNE | 95 | 1018 |
| 04:00 | 08:00 | 14.2 | 14.4 | 0 | 1.1 | NNE | 95 | 1018 |
| 05:00 | 09:00 | 13.7 | 13.6 | 0 | 1.2 | NNE | 91 | 1018 |
| 06:00 | 10:00 | 13.8 | 14.2 | 0 | 0.8 | NNE | 94 | 1018 |
| 07:00 | 11:00 | 13.8 | 14 | 0 | 0.8 | NNE | 93 | 1019 |
| 08:00 | 12:00 | 14.3 | 14.4 | 0 | 1 | NNE | 91 | 1019 |
| 09:00 | 13:00 | 15 | 15.4 | 0 | 1.4 | NNE | 95 | 1019 |
| 10:00 | 14:00 | 18.5 | 19.7 | 0 | 0.9 | NE | 82 | 1019 |
| 11:00 | 15:00 | 21.2 | 20.9 | 0 | 1.5 | ENE | 57 | 1019 |
| 12:00 | 16:00 | 22.3 | 22.3 | 0 | 1.4 | ENE | 56 | 1018 |
| 13:00 | 17:00 | 23.8 | 23.7 | 0 | 1.3 | ENE | 49 | 1018 |
| 14:00 | 18:00 | 24.4 | 24.4 | 0 | 1.2 | ENE | 48 | 1017 |
| 15:00 | 19:00 | 24.9 | 24.8 | 0 | 1.3 | ENE | 47 | 1016 |
| 16:00 | 20:00 | 25.6 | 25.3 | 0 | 1.5 | ENE | 44 | 1015 |
| 17:00 | 21:00 | 25.6 | 25.2 | 0 | 1.7 | ENE | 44 | 1015 |
| 18:00 | 22:00 | 24 | 25.1 | 0 | 1.3 | ENE | 61 | 1015 |
| 19:00 | 23:00 | 23.2 | 24.7 | 0 | 0.9 | NE | 66 | 1015 |
| 20:00 | 00:00 | 21 | 21.7 | 0 | 1.1 | NE | 66 | 1015 |
| 21:00 | 01:00 | 19.2 | 19.5 | 0 | 1.3 | NNE | 70 | 1016 |
| 22:00 | 02:00 | 17.3 | 17.4 | 0 | 1.4 | NNE | 78 | 1016 |
| 23:00 | 03:00 | 16.1 | 16.5 | 0 | 1.5 | NE | 91 | 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
- Sylva — 35.250°, -83.250°, ERA5 grid cell center, 13.9 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 25 September 2017 specifically — not a monthly average. See the Sylva 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 (2026-07-17). Historical climate data for Sylva, United States (35.25°N, 83.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Sylva, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Sylva, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Sylva, 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/}
}Notice something wrong with this data? Report a data issue.