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Philadelphia, PA Climate in January

Temperature for January

In Philadelphia, PA during January the average high temperature is 42.1°F. The hottest day on record was January 7, 2007 when the temperature recorded was 73.0°F.

Philadelphia, PA daily average and extreme temperature range for January

Low Temperature

Overnight in January the average temperature drops below freezing at 24.5°F, with the lowest temperature of -7.1°F being recorded on January 18, 1982. On average there are 6 days in January when the temperature stays below freezing all day. In the worst January there were 16 days when the temperature did not make it above freezing. Overnight temperatures drop below freezing between 11 and 31 times in January.

Precipitation for January

In January the average monthly rainfall in Philadelphia, PA is 3.89 inches with rain usually falling on between 8 and 9 days. 1981 was the driest January with only 0.80 inches of rain falling, and 1973 was the wettest January with 15.27 inches of rain. The wettest single day in January was 9 January 1982 when 3.90 inches of rain fell.

In January it usually snows on between 6 and 7 days. In January there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in January.

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