Home / Lancaster / 31 August 2017
Lancaster
United States · 31 August 2017
← 30 August 20171 September 2017 →
Average
21.9°C
low 17.4° · high 27.3°
Rainfall
0mm
dry day
Wind
3.1m/s
daily average
Humidity
69.9%
daily average
Cloud
67%
cover
Pressure
1015hPa
daily average
The temperature ranged from 17.4°C around 05:00 to 27.3°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
44th percentile
Low temperature
33th percentile
Rainfall
49th percentile
Wind
83th 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 23.3°C, versus 21.9°C on this specific day.
Sun & daylight
Sunrise
06:32
Sunset
19:37
Day length
13h 6m
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 | 18.7 | 18.5 | 0 | 3.3 | SW | 85 | 1015 |
| 01:00 | 05:00 | 18.1 | 17.8 | 0 | 3.2 | SW | 87 | 1015 |
| 02:00 | 06:00 | 18.1 | 17.8 | 0 | 3.1 | WSW | 87 | 1015 |
| 03:00 | 07:00 | 17.9 | 17.8 | 0 | 2.9 | WSW | 87 | 1015 |
| 04:00 | 08:00 | 17.5 | 17.3 | 0 | 2.9 | WSW | 89 | 1015 |
| 05:00 | 09:00 | 17.4 | 17.5 | 0 | 2.7 | WSW | 91 | 1015 |
| 06:00 | 10:00 | 17.5 | 17.9 | 0 | 2.1 | W | 89 | 1015 |
| 07:00 | 11:00 | 17.7 | 18.1 | 0 | 2.2 | W | 89 | 1015 |
| 08:00 | 12:00 | 18.8 | 19.6 | 0 | 2 | WNW | 86 | 1016 |
| 09:00 | 13:00 | 20.6 | 22 | 0 | 1.8 | WNW | 84 | 1016 |
| 10:00 | 14:00 | 22.4 | 24 | 0 | 2.1 | WNW | 79 | 1016 |
| 11:00 | 15:00 | 25.3 | 25.6 | 0 | 2.5 | NW | 57 | 1015 |
| 12:00 | 16:00 | 26.2 | 26.4 | 0.04 | 2.9 | WNW | 56 | 1015 |
| 13:00 | 17:00 | 26.7 | 26.3 | 0 | 3.5 | WNW | 52 | 1014 |
| 14:00 | 18:00 | 27.2 | 26.4 | 0 | 3.7 | NW | 49 | 1014 |
| 15:00 | 19:00 | 27.2 | 26.4 | 0 | 3.6 | NW | 49 | 1013 |
| 16:00 | 20:00 | 27.3 | 26.5 | 0 | 3.7 | NW | 48 | 1013 |
| 17:00 | 21:00 | 27.1 | 26.5 | 0 | 3.5 | NW | 51 | 1013 |
| 18:00 | 22:00 | 24.9 | 24.5 | 0 | 3.4 | N | 58 | 1013 |
| 19:00 | 23:00 | 24.1 | 23.2 | 0 | 3.6 | N | 58 | 1014 |
| 20:00 | 00:00 | 22.9 | 21.3 | 0 | 4.3 | N | 59 | 1015 |
| 21:00 | 01:00 | 22.1 | 20.5 | 0 | 4.1 | N | 60 | 1016 |
| 22:00 | 02:00 | 21.1 | 19.7 | 0 | 3.8 | N | 64 | 1016 |
| 23:00 | 03:00 | 19.8 | 18.3 | 0 | 3.6 | N | 66 | 1017 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Lancaster — 40.000°, -76.250°, ERA5 grid cell center, 6.3 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 31 August 2017 specifically — not a monthly average. See the Lancaster 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 Lancaster, United States (40.00°N, 76.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Lancaster, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Lancaster, 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 Lancaster, 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.