Home / Mountain Top / 31 August 2017
Mountain Top
United States · 31 August 2017
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Average
17.4°C
low 13°C · high 23.6°C
Rainfall
0.5mm
dry day
Wind
2.8m/s
daily average
Humidity
72.9%
daily average
Cloud
49%
cover
Pressure
1015hPa
daily average
The temperature ranged from 13°C around 23:00 to 23.6°C around 13:00. Rain was recorded across 2 hours, from around 14:00 to 15:00 (0.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
30th percentile
Low temperature
23th percentile
Rainfall
64th percentile
Wind
75th 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 20.7°C, versus 17.4°C on this specific day.
Sun & daylight
Sunrise
06:29
Sunset
19:37
Day length
13h 8m
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 | 15.7°C | 15.1°C | 0 | 2.1 | W | 83 | 1015 |
| 01:00 | 05:00 | 15°C | 14.7°C | 0 | 1.6 | W | 87 | 1015 |
| 02:00 | 06:00 | 14.6°C | 14.3°C | 0 | 1.5 | WSW | 88 | 1014 |
| 03:00 | 07:00 | 14.3°C | 14.1°C | 0 | 1.4 | WSW | 88 | 1014 |
| 04:00 | 08:00 | 14.1°C | 13.7°C | 0 | 1.6 | WSW | 90 | 1014 |
| 05:00 | 09:00 | 14.1°C | 13.6°C | 0 | 1.8 | WSW | 90 | 1014 |
| 06:00 | 10:00 | 14.3°C | 14°C | 0 | 1.5 | W | 86 | 1015 |
| 07:00 | 11:00 | 14.3°C | 14°C | 0 | 1.3 | W | 87 | 1015 |
| 08:00 | 12:00 | 15.5°C | 15.4°C | 0 | 1.5 | W | 85 | 1015 |
| 09:00 | 13:00 | 17.5°C | 17°C | 0 | 2.8 | WNW | 83 | 1015 |
| 10:00 | 14:00 | 19.5°C | 18.6°C | 0 | 3.5 | NW | 75 | 1016 |
| 11:00 | 15:00 | 21.7°C | 20.2°C | 0.06 | 3.6 | NW | 58 | 1015 |
| 12:00 | 16:00 | 22.7°C | 21.1°C | 0.07 | 4.2 | NW | 57 | 1015 |
| 13:00 | 17:00 | 23.6°C | 22.1°C | 0.07 | 3.8 | NW | 53 | 1015 |
| 14:00 | 18:00 | 22.8°C | 21.4°C | 0.18 | 3.7 | NNW | 56 | 1015 |
| 15:00 | 19:00 | 20.9°C | 19.7°C | 0.11 | 3.7 | NNW | 67 | 1015 |
| 16:00 | 20:00 | 19.6°C | 18.3°C | 0.03 | 3.9 | NNW | 72 | 1015 |
| 17:00 | 21:00 | 19.5°C | 18°C | 0 | 3.9 | N | 69 | 1015 |
| 18:00 | 22:00 | 18.8°C | 16.8°C | 0 | 3.7 | NNW | 65 | 1016 |
| 19:00 | 23:00 | 18°C | 15.8°C | 0 | 3.3 | NNW | 61 | 1016 |
| 20:00 | 00:00 | 16.5°C | 14.1°C | 0 | 3.1 | NNW | 60 | 1016 |
| 21:00 | 01:00 | 15.7°C | 12.9°C | 0 | 3.1 | NNW | 58 | 1017 |
| 22:00 | 02:00 | 14.5°C | 11.4°C | 0 | 3.7 | N | 63 | 1018 |
| 23:00 | 03:00 | 13°C | 9.6°C | 0 | 3.8 | N | 68 | 1018 |
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
- Mountain Top — 41.250°, -76.000°, ERA5 grid cell center, 13.6 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 Mountain Top 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 Mountain Top, United States (41.25°N, 76.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Mountain Top, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mountain Top, 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 Mountain Top, 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.