Weather on December 18
Hartford, CT
55 Years of Data
Avg High
39°F
Avg Low
23°F
Warmest
2023
54°F avg
Coldest
1980
14°F avg
About This Date
December 18th in Hartford, CT typically brings cold winter weather, with average highs around 39°F and lows near 23°F. Over 55 years of records, the warmest December 18th was in 2023 (54°F average), while the coldest was 1980 (14°F) — a 40°F range across recorded history. Precipitation has occurred on 25% of recorded December 18th dates, with snow falling 2% of the time (heaviest snowfall: 2"). The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Hartford, CT? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
2.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 49° | 19° | 34° | — | — |
| 2024 | 52° | 25° | 39° | 0.99" | — |
| 2023warmest | 65° | 44° | 54° | 5.38" | — |
| 2022 | 42° | 26° | 34° | — | — |
| 2021 | 43° | 36° | 39° | 0.69" | — |
| 2020 | 32° | 14° | 23° | — | — |
| 2019 | 35° | 20° | 28° | — | — |
| 2018 | 36° | 23° | 30° | — | — |
| 2017 | 38° | 28° | 33° | — | — |
| 2016 | 54° | 29° | 42° | 0.23" | — |
| 2015 | 51° | 38° | 44° | — | — |
| 2014 | 40° | 36° | 38° | — | — |
| 2013 | 35° | 18° | 27° | — | — |
| 2012 | 47° | 37° | 42° | 2.03" | — |
| 2011 | 28° | 17° | 23° | — | — |
| 2010 | 39° | 23° | 31° | — | — |
| 2009 | 28° | 11° | 20° | — | — |
| 2008 | 40° | 24° | 32° | — | — |
| 2007 | 34° | 12° | 23° | — | — |
| 2006 | 53° | 41° | 47° | — | — |
| 2005 | 36° | 21° | 28° | — | — |
| 2004 | 37° | 17° | 27° | — | — |
| 2003 | 39° | 32° | 36° | — | — |
| 2002 | 36° | 17° | 26° | — | — |
| 2001 | 43° | 34° | 38° | 1.4" | — |
| 2000 | 39° | 28° | 34° | — | — |
| 1999 | 40° | 31° | 35° | — | — |
| 1998 | 42° | — | — | 0.43" | — |
| 1997 | 50° | 22° | 36° | — | — |
| 1996 | 55° | 37° | 46° | 0.76" | — |
| 1995 | 21° | 21° | 21° | — | — |
| 1994 | 45° | 32° | 38° | 0.05" | — |
| 1993 | 39° | 23° | 31° | — | — |
| 1992 | 44° | 25° | 34° | — | — |
| 1991 | 37° | 9° | 23° | 0.58" | — |
| 1990 | 45° | 30° | 37° | 0.13" | — |
| 1989 | 28° | 13° | 20° | — | — |
| 1988 | 20° | 10° | 15° | — | — |
| 1987 | 36° | 24° | 30° | — | — |
| 1986 | 36° | 30° | 33° | — | — |
| 1985 | 28° | 10° | 19° | — | — |
| 1984 | 61° | 27° | 44° | — | — |
| 1983 | 40° | 19° | 29° | — | — |
| 1982 | 32° | 17° | 25° | — | — |
| 1981 | 34° | 26° | 30° | 0.53" | 2" |
| 1980coldest | 24° | 3° | 14° | — | — |
| 1979 | 26° | 13° | 19° | — | — |
| 1978 | 46° | 24° | 35° | — | — |
| 1977 | 40° | 20° | 30° | — | — |
| 1976 | 41° | 32° | 37° | — | — |
| 1975 | 36° | 22° | 29° | 0.05" | — |
| 1974 | 46° | 27° | 36° | — | — |
| 1973 | 32° | 11° | 21° | 1.14" | — |
| 1972 | 21° | 9° | 15° | — | — |
| 1971 | 32° | 18° | 25° | — | — |
55 years of data from HARTFORD BRAINARD FLD