Home / Grantham / 18 December 2023
Grantham
United States · 18 December 2023
← 17 December 202319 December 2023 →
Average
10.1°C
low 6°C · high 14.5°C
Rainfall
65.3mm
rain recorded
Wind
5.7m/s
daily average
Humidity
93.4%
daily average
Cloud
94%
cover
Pressure
992hPa
daily average
The temperature ranged from 6°C around 00:00 to 14.5°C around 12:00. Rain was recorded across 19 hours, from around 00:00 to 18:00 (65.3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
100th percentile
Low temperature
100th percentile
Rainfall
100th percentile
Wind
96th 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 -4.1°C, versus 10.1°C on this specific day.
Sun & daylight
Sunrise
07:16
Sunset
16:14
Day length
8h 57m
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 | 6°C | 2.4°C | 2.04 | 3.7 | ESE | 98 | 1011 |
| 01:00 | 06:00 | 6.3°C | 2.7°C | 2.19 | 3.8 | ESE | 99 | 1009 |
| 02:00 | 07:00 | 6.6°C | 2.9°C | 2.04 | 4.2 | ESE | 99 | 1007 |
| 03:00 | 08:00 | 8.2°C | 4.4°C | 1.85 | 4.7 | ESE | 98 | 1004 |
| 04:00 | 09:00 | 9.2°C | 5.3°C | 2.41 | 5.2 | SE | 97 | 1001 |
| 05:00 | 10:00 | 11.5°C | 6.6°C | 2.59 | 7.3 | ESE | 97 | 998 |
| 06:00 | 11:00 | 11.8°C | 6.4°C | 4.29 | 8.4 | SE | 97 | 995 |
| 07:00 | 12:00 | 12°C | 6.3°C | 3.8 | 8.8 | SE | 96 | 992 |
| 08:00 | 13:00 | 11.9°C | 6.3°C | 3.41 | 8.6 | SE | 95 | 990 |
| 09:00 | 14:00 | 12.4°C | 7°C | 8.21 | 8.5 | SE | 96 | 988 |
| 10:00 | 15:00 | 12.1°C | 7.1°C | 7.52 | 7.8 | SE | 97 | 986 |
| 11:00 | 16:00 | 13.5°C | 9.2°C | 5.35 | 7.3 | SSE | 95 | 985 |
| 12:00 | 17:00 | 14.5°C | 11.2°C | 4.43 | 6.5 | SSE | 95 | 983 |
| 13:00 | 18:00 | 14.3°C | 11.3°C | 2.41 | 5.9 | SSE | 95 | 982 |
| 14:00 | 19:00 | 14.2°C | 11.9°C | 0.36 | 4.8 | SSE | 95 | 981 |
| 15:00 | 20:00 | 14°C | 13.5°C | 1.83 | 2 | S | 94 | 980 |
| 16:00 | 21:00 | 13.9°C | 11.8°C | 5.13 | 4.3 | W | 94 | 981 |
| 17:00 | 22:00 | 9.1°C | 4°C | 4.59 | 6.4 | W | 90 | 984 |
| 18:00 | 23:00 | 7.5°C | 2.5°C | 0.81 | 5.6 | WNW | 88 | 986 |
| 19:00 | 00:00 | 7.3°C | 2.7°C | 0.04 | 5.1 | W | 89 | 990 |
| 20:00 | 01:00 | 7.1°C | 2.8°C | 0 | 4.6 | WSW | 87 | 993 |
| 21:00 | 02:00 | 6.8°C | 2.5°C | 0 | 4.3 | WSW | 85 | 995 |
| 22:00 | 03:00 | 6.6°C | 2.6°C | 0 | 3.9 | WSW | 83 | 996 |
| 23:00 | 04:00 | 6.2°C | 1.9°C | 0 | 4.2 | WSW | 83 | 998 |
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
- Grantham — 43.500°, -72.250°, ERA5 grid cell center, 9.1 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 18 December 2023 specifically — not a monthly average. See the Grantham 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 Grantham, United States (43.50°N, 72.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Grantham, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Grantham, 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 Grantham, 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.