Home / Mount Kisco / 18 December 2017
Mount Kisco
United States · 18 December 2017
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Average
1.6°C
low -1.3°C · high 4.6°C
Rainfall
0.6mm
dry day
Wind
1.4m/s
daily average
Humidity
78.6%
daily average
Cloud
83%
cover
Pressure
1018hPa
daily average
The temperature ranged from -1.3°C around 04:00 to 4.6°C around 15:00. Rain was recorded across 3 hours, from around 04:00 to 06:00 (0.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
50th percentile
Low temperature
55th percentile
Rainfall
59th percentile
Wind
1th 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 1.4°C, versus 1.6°C on this specific day.
Sun & daylight
Sunrise
07:15
Sunset
16:27
Day length
9h 12m
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 | 05:00 | -0.8°C | -4.4°C | 0.03 | 1.3 | E | 72 | 1023 |
| 01:00 | 06:00 | -1°C | -4.4°C | 0.03 | 1.1 | E | 73 | 1023 |
| 02:00 | 07:00 | -1.1°C | -4.5°C | 0.01 | 1 | E | 74 | 1023 |
| 03:00 | 08:00 | -1°C | -4.4°C | 0.06 | 1.1 | E | 78 | 1023 |
| 04:00 | 09:00 | -1.3°C | -4.7°C | 0.1 | 1.2 | E | 79 | 1022 |
| 05:00 | 10:00 | -1°C | -4.5°C | 0.11 | 1.4 | E | 80 | 1022 |
| 06:00 | 11:00 | -0.9°C | -4.2°C | 0.12 | 1.1 | E | 81 | 1021 |
| 07:00 | 12:00 | -0.7°C | -3.7°C | 0.07 | 0.7 | E | 83 | 1021 |
| 08:00 | 13:00 | -0.7°C | -3.7°C | 0.03 | 0.8 | ENE | 84 | 1021 |
| 09:00 | 14:00 | -0.4°C | -3.4°C | 0.01 | 0.9 | E | 84 | 1020 |
| 10:00 | 15:00 | 0.7°C | -2°C | 0 | 0.7 | ESE | 81 | 1020 |
| 11:00 | 16:00 | 2.3°C | -0.1°C | 0 | 0.3 | S | 75 | 1019 |
| 12:00 | 17:00 | 3.2°C | 0.9°C | 0.01 | 0.3 | SW | 74 | 1018 |
| 13:00 | 18:00 | 4.1°C | 1.9°C | 0.01 | 0.4 | SSW | 74 | 1017 |
| 14:00 | 19:00 | 4.4°C | 2.1°C | 0 | 0.5 | S | 75 | 1015 |
| 15:00 | 20:00 | 4.6°C | 2.2°C | 0 | 0.7 | SSE | 76 | 1015 |
| 16:00 | 21:00 | 3.7°C | 0.7°C | 0 | 1.6 | S | 78 | 1015 |
| 17:00 | 22:00 | 3.7°C | 0.8°C | 0 | 1.5 | SSE | 80 | 1015 |
| 18:00 | 23:00 | 3.7°C | 0.3°C | 0 | 2.1 | SSW | 79 | 1014 |
| 19:00 | 00:00 | 3.5°C | -0.5°C | 0 | 2.9 | SW | 80 | 1014 |
| 20:00 | 01:00 | 3.6°C | -0.5°C | 0 | 3.2 | WSW | 80 | 1015 |
| 21:00 | 02:00 | 3.6°C | -0.4°C | 0.01 | 3 | WSW | 81 | 1014 |
| 22:00 | 03:00 | 3.3°C | -0.8°C | 0 | 3.1 | WSW | 82 | 1014 |
| 23:00 | 04:00 | 3.3°C | -0.7°C | 0 | 3 | WSW | 82 | 1014 |
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 Kisco — 41.250°, -73.750°, ERA5 grid cell center, 5.4 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 18 December 2017 specifically — not a monthly average. See the Mount Kisco 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 Mount Kisco, United States (41.25°N, 73.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Mount Kisco, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mount Kisco, 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 Mount Kisco, 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.