Home / Mount Washington / 27 July 2017
Mount Washington
United States · 27 July 2017
Average
26.6°C
low 24.5°C · high 30.5°C
Rainfall
4.2mm
rain recorded
Wind
1.9m/s
daily average
Humidity
81.2%
daily average
Cloud
98%
cover
Pressure
1013hPa
daily average
The temperature ranged from 24.5°C around 08:00 to 30.5°C around 16:00. Rain was recorded across 11 hours, from around 07:00 to 23:00 (4.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
54th percentile
Low temperature
94th percentile
Rainfall
76th percentile
Wind
55th 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 25.4°C, versus 26.6°C on this specific day.
Sun & daylight
Sunrise
06:41
Sunset
20:55
Day length
14h 14m
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 | 26.7°C | 29.8°C | 0 | 1.9 | SW | 73 | 1016 |
| 01:00 | 05:00 | 26.4°C | 29.5°C | 0 | 1.8 | WSW | 74 | 1015 |
| 02:00 | 06:00 | 25.7°C | 29.1°C | 0 | 1.6 | WSW | 78 | 1015 |
| 03:00 | 07:00 | 25.6°C | 29°C | 0.03 | 1.6 | SSW | 78 | 1015 |
| 04:00 | 08:00 | 25.6°C | 28.7°C | 0 | 1.6 | SSW | 77 | 1014 |
| 05:00 | 09:00 | 25.3°C | 28.3°C | 0 | 1.8 | SSW | 78 | 1014 |
| 06:00 | 10:00 | 24.5°C | 27.8°C | 0 | 2.2 | W | 87 | 1014 |
| 07:00 | 11:00 | 24.5°C | 28.6°C | 0.16 | 1.2 | WSW | 87 | 1014 |
| 08:00 | 12:00 | 24.5°C | 28.3°C | 0.66 | 1.7 | SW | 88 | 1015 |
| 09:00 | 13:00 | 24.6°C | 29.1°C | 0.86 | 1.5 | SSE | 93 | 1015 |
| 10:00 | 14:00 | 24.7°C | 29.2°C | 0.36 | 1.5 | SSE | 93 | 1015 |
| 11:00 | 15:00 | 25.3°C | 29.9°C | 0.61 | 1.4 | S | 90 | 1015 |
| 12:00 | 16:00 | 26.5°C | 31.4°C | 0.1 | 1.7 | SW | 89 | 1015 |
| 13:00 | 17:00 | 27.4°C | 32.4°C | 0.02 | 2 | WSW | 87 | 1014 |
| 14:00 | 18:00 | 28.6°C | 33.1°C | 0.06 | 2.4 | SW | 80 | 1013 |
| 15:00 | 19:00 | 29.2°C | 32.6°C | 0.11 | 3.9 | WSW | 76 | 1012 |
| 16:00 | 20:00 | 30.5°C | 33.7°C | 0.12 | 3.4 | W | 67 | 1013 |
| 17:00 | 21:00 | 28.5°C | 32.6°C | 0.04 | 2.7 | W | 78 | 1012 |
| 18:00 | 22:00 | 29.3°C | 34.5°C | 0.02 | 0.9 | W | 73 | 1011 |
| 19:00 | 23:00 | 28.9°C | 33.5°C | 0.02 | 1.7 | SW | 74 | 1012 |
| 20:00 | 00:00 | 28.2°C | 32.5°C | 0.05 | 1.8 | SW | 76 | 1011 |
| 21:00 | 01:00 | 27°C | 30.7°C | 0.44 | 1.8 | SW | 77 | 1012 |
| 22:00 | 02:00 | 25.5°C | 29.4°C | 0.44 | 1.7 | SW | 85 | 1011 |
| 23:00 | 03:00 | 24.7°C | 28.9°C | 0.15 | 1.8 | SW | 92 | 1011 |
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
- Mount Washington — 38.000°, -85.500°, ERA5 grid cell center, 6.9 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 27 July 2017 specifically — not a monthly average. See the Mount Washington 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 Mount Washington, United States (38.00°N, 85.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Mount Washington, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mount Washington, 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 Mount Washington, 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.