Hartford, CT Climate in December

Temperature for December

In Hartford, CT during December the average high temperature is 42.0°F. The hottest day on record was December 7, 1998 when the temperature recorded was 75.2°F.

Hartford, CT daily average and extreme temperature range for December

Low Temperature

Overnight in December the average temperature drops below freezing at 27.4°F, with the lowest temperature of -2.7°F being recorded on December 25, 1980. On average there are 5 days in December when the temperature stays below freezing all day. In the worst December there were 10 days when the temperature did not make it above freezing. Overnight temperatures drop below freezing between 2 and 31 times in December.

Precipitation for December

In December the average monthly rainfall in Hartford, CT is 1.46 inches with rain usually falling on between 5 and 6 days. 1980 was the driest December with only 0.00 inches of rain falling, and 2008 was the wettest December with 6.64 inches of rain. The wettest single day in December was 12 December 2008 when 3.53 inches of rain fell.

In December it usually snows on between 3 and 4 days. In December there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in December.