Home / Worcester / 13 December 2017
Worcester
United States · 13 December 2017
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Average
-5.6°C
low -7.8°C · high -0.6°C
Rainfall
0.1mm
dry day
Wind
6.8m/s
daily average
Humidity
59.3%
daily average
Cloud
60%
cover
Pressure
995hPa
daily average
The temperature ranged from -7.8°C around 07:00 to -0.6°C around 00:00. 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
17th percentile
Low temperature
20th percentile
Rainfall
49th percentile
Wind
99th 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 0.4°C, versus -5.6°C on this specific day.
Sun & daylight
Sunrise
07:07
Sunset
16:15
Day length
9h 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 | 05:00 | -0.6°C | -6.9°C | 0 | 5.6 | WNW | 79 | 992 |
| 01:00 | 06:00 | -1.5°C | -8°C | 0 | 5.5 | WNW | 77 | 992 |
| 02:00 | 07:00 | -2.7°C | -9.5°C | 0 | 5.8 | WNW | 76 | 993 |
| 03:00 | 08:00 | -4.3°C | -11.2°C | 0 | 5.6 | WNW | 71 | 993 |
| 04:00 | 09:00 | -5.5°C | -12.8°C | 0 | 6.1 | WNW | 70 | 993 |
| 05:00 | 10:00 | -7.3°C | -14.6°C | 0 | 5.8 | W | 64 | 992 |
| 06:00 | 11:00 | -7.5°C | -14.7°C | 0 | 5.5 | W | 63 | 993 |
| 07:00 | 12:00 | -7.8°C | -15.3°C | 0 | 6 | W | 65 | 993 |
| 08:00 | 13:00 | -7.6°C | -15.7°C | 0 | 6.9 | W | 63 | 993 |
| 09:00 | 14:00 | -7.1°C | -15.7°C | 0 | 7.5 | W | 61 | 994 |
| 10:00 | 15:00 | -6.7°C | -15.8°C | 0.02 | 8.3 | W | 59 | 994 |
| 11:00 | 16:00 | -6°C | -15°C | 0.02 | 8.2 | W | 53 | 994 |
| 12:00 | 17:00 | -5.7°C | -15.2°C | 0.02 | 8.7 | W | 51 | 993 |
| 13:00 | 18:00 | -5.7°C | -15.2°C | 0.01 | 8.8 | W | 49 | 994 |
| 14:00 | 19:00 | -5.5°C | -14.6°C | 0 | 8.3 | W | 50 | 995 |
| 15:00 | 20:00 | -5.5°C | -14.6°C | 0 | 8.1 | W | 50 | 996 |
| 16:00 | 21:00 | -5.5°C | -14°C | 0 | 7.5 | W | 51 | 996 |
| 17:00 | 22:00 | -5.7°C | -13.7°C | 0 | 6.8 | W | 52 | 998 |
| 18:00 | 23:00 | -5.6°C | -13.6°C | 0 | 6.6 | W | 51 | 998 |
| 19:00 | 00:00 | -5.7°C | -13.8°C | 0 | 6.8 | W | 51 | 999 |
| 20:00 | 01:00 | -6.1°C | -14°C | 0 | 6.6 | W | 52 | 1000 |
| 21:00 | 02:00 | -6.3°C | -14°C | 0 | 6.2 | W | 53 | 1001 |
| 22:00 | 03:00 | -6.7°C | -13.9°C | 0 | 5.5 | W | 55 | 1001 |
| 23:00 | 04:00 | -6.7°C | -13.9°C | 0 | 5.5 | W | 55 | 1002 |
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
- Worcester — 42.250°, -71.750°, ERA5 grid cell center, 4.5 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 13 December 2017 specifically — not a monthly average. See the Worcester 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 Worcester, United States (42.25°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 Worcester, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Worcester, 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 Worcester, 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.