Home / Halfway / 27 September 2017
Halfway
United States · 27 September 2017
← 26 September 201728 September 2017 →
Average
25.4°C
low 19.2°C · high 33.3°C
Rainfall
0mm
dry day
Wind
2m/s
daily average
Humidity
64.5%
daily average
Cloud
10%
cover
Pressure
1012hPa
daily average
The temperature ranged from 19.2°C around 05:00 to 33.3°C around 16:00. 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
99th percentile
Low temperature
92th percentile
Rainfall
47th percentile
Wind
35th 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 18.8°C, versus 25.4°C on this specific day.
Sun & daylight
Sunrise
07:03
Sunset
18:59
Day length
11h 56m
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 | 21.1°C | 23.3°C | 0 | 0.9 | NE | 83 | 1014 |
| 01:00 | 05:00 | 21.8°C | 23.5°C | 0 | 1.3 | N | 77 | 1014 |
| 02:00 | 06:00 | 19.6°C | 20.7°C | 0 | 1.9 | N | 86 | 1014 |
| 03:00 | 07:00 | 19.9°C | 21°C | 0 | 2 | N | 85 | 1013 |
| 04:00 | 08:00 | 19.5°C | 20.5°C | 0 | 2.1 | N | 88 | 1013 |
| 05:00 | 09:00 | 19.2°C | 20.4°C | 0 | 2.1 | N | 90 | 1013 |
| 06:00 | 10:00 | 19.3°C | 21°C | 0 | 1.4 | N | 91 | 1013 |
| 07:00 | 11:00 | 19.3°C | 20.7°C | 0 | 2 | NNW | 92 | 1013 |
| 08:00 | 12:00 | 20°C | 21.5°C | 0 | 1.9 | NNW | 90 | 1014 |
| 09:00 | 13:00 | 21.9°C | 24.2°C | 0 | 1.4 | NNW | 84 | 1014 |
| 10:00 | 14:00 | 24.7°C | 26.9°C | 0 | 1.8 | N | 74 | 1013 |
| 11:00 | 15:00 | 28°C | 28.9°C | 0 | 2.1 | N | 51 | 1013 |
| 12:00 | 16:00 | 29.5°C | 30.6°C | 0 | 2.2 | N | 49 | 1012 |
| 13:00 | 17:00 | 31°C | 31.8°C | 0 | 2.4 | NNE | 44 | 1011 |
| 14:00 | 18:00 | 31.9°C | 32.6°C | 0 | 2.8 | NNE | 42 | 1010 |
| 15:00 | 19:00 | 32.9°C | 33.3°C | 0 | 2.9 | N | 39 | 1010 |
| 16:00 | 20:00 | 33.3°C | 33.5°C | 0 | 2.8 | N | 37 | 1009 |
| 17:00 | 21:00 | 33.3°C | 32.8°C | 0 | 2.9 | N | 33 | 1009 |
| 18:00 | 22:00 | 31.2°C | 33.1°C | 0 | 1.6 | NNE | 46 | 1009 |
| 19:00 | 23:00 | 29.1°C | 31°C | 0 | 1.4 | NE | 52 | 1009 |
| 20:00 | 00:00 | 27°C | 28.3°C | 0 | 1.1 | NNE | 51 | 1010 |
| 21:00 | 01:00 | 26°C | 26.5°C | 0 | 1.5 | NNW | 51 | 1009 |
| 22:00 | 02:00 | 25.3°C | 25.4°C | 0 | 2 | NW | 52 | 1009 |
| 23:00 | 03:00 | 24.5°C | 24.7°C | 0 | 2.7 | NW | 60 | 1009 |
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
- Halfway — 39.500°, -77.750°, ERA5 grid cell center, 13.4 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 27 September 2017 specifically — not a monthly average. See the Halfway 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 (2026-07-20). Historical climate data for Halfway, United States (39.50°N, 77.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Halfway, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Halfway, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Halfway, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.