Home / Willimantic / 11 December 2021
Willimantic
United States · 11 December 2021
← 10 December 202112 December 2021 →
Average
9.7°C
low 0.6°C · high 16.9°C
Rainfall
12.8mm
rain recorded
Wind
5.2m/s
daily average
Humidity
92.6%
daily average
Cloud
98%
cover
Pressure
1009hPa
daily average
The temperature ranged from 0.6°C around 01:00 to 16.9°C around 23:00. Rain was recorded across 9 hours, from around 09:00 to 23:00 (12.8mm 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
80th percentile
Rainfall
89th percentile
Wind
93th 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 0.8°C, versus 9.7°C on this specific day.
Sun & daylight
Sunrise
07:06
Sunset
16:18
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 | 0.9°C | -2.4°C | 0 | 1.7 | E | 87 | 1021 |
| 01:00 | 06:00 | 0.6°C | -3°C | 0 | 2.1 | E | 87 | 1020 |
| 02:00 | 07:00 | 2.6°C | -0.8°C | 0 | 2 | E | 85 | 1019 |
| 03:00 | 08:00 | 3.7°C | 0.4°C | 0.01 | 2.4 | E | 87 | 1018 |
| 04:00 | 09:00 | 4°C | 0.4°C | 0.01 | 2.9 | ESE | 90 | 1017 |
| 05:00 | 10:00 | 4.2°C | 0.6°C | 0.01 | 3 | ESE | 93 | 1016 |
| 06:00 | 11:00 | 4.7°C | 1°C | 0.02 | 3.2 | ESE | 93 | 1015 |
| 07:00 | 12:00 | 5.6°C | 2°C | 0.02 | 3.4 | SE | 94 | 1014 |
| 08:00 | 13:00 | 6.3°C | 2.6°C | 0.06 | 3.9 | SE | 95 | 1013 |
| 09:00 | 14:00 | 7.7°C | 4°C | 0.75 | 4.3 | SSE | 97 | 1012 |
| 10:00 | 15:00 | 9.6°C | 5.8°C | 0.77 | 5.2 | S | 98 | 1010 |
| 11:00 | 16:00 | 11.1°C | 7.1°C | 1.72 | 6 | SSW | 97 | 1008 |
| 12:00 | 17:00 | 11.5°C | 8°C | 3.57 | 5.7 | SSW | 98 | 1007 |
| 13:00 | 18:00 | 11.8°C | 8.3°C | 0.87 | 5.7 | SSW | 97 | 1005 |
| 14:00 | 19:00 | 12.4°C | 8.7°C | 0.01 | 6.1 | SSW | 96 | 1004 |
| 15:00 | 20:00 | 14°C | 10.5°C | 0.02 | 6.5 | SSW | 95 | 1004 |
| 16:00 | 21:00 | 14°C | 10.1°C | 0 | 7 | SSW | 95 | 1003 |
| 17:00 | 22:00 | 13.8°C | 9.8°C | 0 | 7 | SSW | 94 | 1003 |
| 18:00 | 23:00 | 14.6°C | 11°C | 0 | 6.8 | SSW | 93 | 1002 |
| 19:00 | 00:00 | 15.1°C | 11°C | 0 | 7.4 | SSW | 92 | 1001 |
| 20:00 | 01:00 | 15.6°C | 11.3°C | 0.15 | 7.9 | SSW | 90 | 1001 |
| 21:00 | 02:00 | 16.1°C | 11.7°C | 0.16 | 8.1 | SSW | 89 | 1000 |
| 22:00 | 03:00 | 16.2°C | 11.9°C | 1.8 | 8.3 | SSW | 89 | 999 |
| 23:00 | 04:00 | 16.9°C | 12.7°C | 2.87 | 8.4 | SW | 91 | 1000 |
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
- Willimantic — 41.750°, -72.250°, ERA5 grid cell center, 5.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 11 December 2021 specifically — not a monthly average. See the Willimantic 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 Willimantic, United States (41.75°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 Willimantic, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willimantic, 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 Willimantic, 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.