Home / Boston / 3 December 2018
Boston
United States · 3 December 2018
← 2 December 20184 December 2018 →
Average
9.8°C
low 7.4°C · high 13.2°C
Rainfall
0.4mm
dry day
Wind
4m/s
daily average
Humidity
77.2%
daily average
Cloud
61%
cover
Pressure
1001hPa
daily average
The temperature ranged from 7.4°C around 23:00 to 13.2°C around 12:00. Rain was recorded for one hour, around 00:00 (0.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
86th percentile
Low temperature
99th percentile
Rainfall
56th percentile
Wind
42th 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 3.9°C, versus 9.8°C on this specific day.
Sun & daylight
Sunrise
06:55
Sunset
16:12
Day length
9h 17m
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 | 9.5°C | 8.1°C | 0.12 | 1.8 | WSW | 97 | 1001 |
| 01:00 | 06:00 | 9.6°C | 8.2°C | 0.05 | 1.8 | WSW | 97 | 1001 |
| 02:00 | 07:00 | 9.4°C | 7.8°C | 0.02 | 1.9 | W | 98 | 1001 |
| 03:00 | 08:00 | 9.1°C | 7.4°C | 0.01 | 2.1 | W | 98 | 1001 |
| 04:00 | 09:00 | 9.2°C | 7.6°C | 0.01 | 2 | WSW | 98 | 1000 |
| 05:00 | 10:00 | 8.8°C | 7.2°C | 0.02 | 1.8 | SW | 97 | 1000 |
| 06:00 | 11:00 | 8.9°C | 7.3°C | 0.03 | 1.7 | SSW | 97 | 1000 |
| 07:00 | 12:00 | 8.9°C | 6.7°C | 0.04 | 2.6 | SW | 97 | 1000 |
| 08:00 | 13:00 | 9.2°C | 6.2°C | 0.05 | 3.9 | SW | 97 | 1000 |
| 09:00 | 14:00 | 9.9°C | 6.3°C | 0 | 4.7 | SW | 94 | 1000 |
| 10:00 | 15:00 | 11.3°C | 7.7°C | 0 | 4.9 | WSW | 86 | 1000 |
| 11:00 | 16:00 | 12.1°C | 8.1°C | 0 | 5.3 | WSW | 80 | 1000 |
| 12:00 | 17:00 | 13.2°C | 8.4°C | 0.01 | 5.7 | W | 63 | 999 |
| 13:00 | 18:00 | 13°C | 8.1°C | 0 | 5.4 | W | 58 | 999 |
| 14:00 | 19:00 | 12.2°C | 7.2°C | 0 | 5.3 | WNW | 57 | 999 |
| 15:00 | 20:00 | 11.6°C | 6.5°C | 0 | 5 | WNW | 53 | 1000 |
| 16:00 | 21:00 | 10.7°C | 5.5°C | 0 | 4.9 | W | 53 | 1000 |
| 17:00 | 22:00 | 9.7°C | 4.5°C | 0 | 4.9 | W | 57 | 1001 |
| 18:00 | 23:00 | 9.2°C | 4.4°C | 0 | 4.2 | W | 59 | 1001 |
| 19:00 | 00:00 | 8.6°C | 3.7°C | 0 | 4.5 | WSW | 61 | 1002 |
| 20:00 | 01:00 | 8.4°C | 3.4°C | 0 | 4.7 | WSW | 63 | 1002 |
| 21:00 | 02:00 | 8°C | 2.7°C | 0 | 5.1 | W | 65 | 1003 |
| 22:00 | 03:00 | 7.6°C | 1.8°C | 0 | 5.6 | W | 65 | 1003 |
| 23:00 | 04:00 | 7.4°C | 1.1°C | 0 | 6.3 | WNW | 63 | 1003 |
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
- Boston — 42.250°, -71.000°, ERA5 grid cell center, 13.0 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 3 December 2018 specifically — not a monthly average. See the Boston 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 Boston, United States (42.25°N, 71.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Boston, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Boston, 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 Boston, 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.