Home / Foster / 15 December 2017
Foster
United States · 15 December 2017
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Average
-6.4°C
low -11.1° · high -3.1°
Rainfall
2.3mm
rain recorded
Wind
1.6m/s
daily average
Humidity
64.5%
daily average
Cloud
94%
cover
Pressure
1016hPa
daily average
The temperature ranged from -11.1°C around 06:00 to -3.1°C around 15:00. Rain was recorded across 8 hours, from around 16:00 to 23:00 (2.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
4th percentile
Low temperature
5th percentile
Rainfall
72th percentile
Wind
5th 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 1.3°C, versus -6.4°C on this specific day.
Sun & daylight
Sunrise
07:07
Sunset
16:17
Day length
9h 10m
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 | 05:00 | -8.3 | -14.3 | 0 | 3.6 | W | 50 | 1018 |
| 01:00 | 06:00 | -8.1 | -13.8 | 0 | 3.2 | WNW | 51 | 1017 |
| 02:00 | 07:00 | -8 | -13.3 | 0 | 2.7 | W | 53 | 1018 |
| 03:00 | 08:00 | -8.5 | -13.4 | 0 | 2.2 | W | 58 | 1019 |
| 04:00 | 09:00 | -9.3 | -13.9 | 0 | 1.7 | W | 62 | 1019 |
| 05:00 | 10:00 | -10.9 | -16 | 0 | 2.4 | W | 68 | 1019 |
| 06:00 | 11:00 | -11.1 | -16.1 | 0 | 2.3 | W | 69 | 1019 |
| 07:00 | 12:00 | -10.9 | -15.5 | 0 | 1.8 | W | 69 | 1019 |
| 08:00 | 13:00 | -9.9 | -14.2 | 0 | 1.3 | W | 67 | 1020 |
| 09:00 | 14:00 | -8.1 | -12 | 0 | 0.8 | WSW | 63 | 1020 |
| 10:00 | 15:00 | -6.1 | -9.9 | 0 | 0.8 | SW | 55 | 1020 |
| 11:00 | 16:00 | -4.8 | -8.7 | 0 | 0.9 | SSW | 50 | 1019 |
| 12:00 | 17:00 | -4.1 | -8.2 | 0 | 1.2 | SSW | 50 | 1018 |
| 13:00 | 18:00 | -3.6 | -8 | 0 | 1.7 | S | 53 | 1017 |
| 14:00 | 19:00 | -3.2 | -7.6 | 0 | 1.9 | S | 55 | 1016 |
| 15:00 | 20:00 | -3.1 | -7.3 | 0.03 | 1.6 | S | 60 | 1015 |
| 16:00 | 21:00 | -3.3 | -6.8 | 0.1 | 0.8 | SSE | 67 | 1014 |
| 17:00 | 22:00 | -4.6 | -8.2 | 0.18 | 0.9 | NNE | 69 | 1013 |
| 18:00 | 23:00 | -4.5 | -7.6 | 0.24 | 0.2 | NE | 69 | 1012 |
| 19:00 | 00:00 | -4.8 | -7.9 | 0.42 | 0.3 | S | 76 | 1013 |
| 20:00 | 01:00 | -4.9 | -8.2 | 0.42 | 0.6 | NW | 81 | 1012 |
| 21:00 | 02:00 | -5.1 | -8.6 | 0.35 | 0.9 | NW | 83 | 1012 |
| 22:00 | 03:00 | -4.9 | -8.8 | 0.35 | 1.6 | WNW | 85 | 1011 |
| 23:00 | 04:00 | -4.5 | -8.9 | 0.21 | 2.3 | WNW | 86 | 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
- Foster — 41.750°, -71.750°, ERA5 grid cell center, 11.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 15 December 2017 specifically — not a monthly average. See the Foster 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 (2026-07-18). Historical climate data for Foster, United States (41.75°N, 71.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Foster, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Foster, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Foster, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.