December weather in Chester, PA
The average temperature in Chester in December is 39.9°F (32.3°F–47.5°F). Average precipitation: 3.25 inches.
December is a winter month in Chester, and is cooler than the annual average of 57.1°F. Daily temperatures swing about 15.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 11m. For travel, December is cool.
Avg High
47.5°F
Avg Low
32.3°F
Precipitation
3.25 in
Daylight
9h 11m
December records in Chester
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.9°F (1933) | 19.9°F (1967) | 1.40 in (1920) |
| December 2 | 66.0°F (1970) | 18.0°F (1930) | 1.97 in (1996) |
| December 3 | 69.1°F (1932) | 15.1°F (1940) | 1.60 in (1967) |
| December 4 | 73.9°F (1998) | 18.0°F (1989) | 1.07 in (1950) |
| December 5 | 68.0°F (1982) | 21.0°F (1940) | 1.43 in (1993) |
| December 6 | 69.1°F (2001) | 21.0°F (1958) | 1.25 in (1938) |
| December 7 | 70.0°F (1998) | 19.0°F (1954) | 1.75 in (2011) |
| December 8 | 64.9°F (1956) | 17.1°F (1934) | 0.92 in (1963) |
| December 9 | 66.0°F (1951) | 15.1°F (1934) | 1.69 in (2009) |
| December 10 | 66.0°F (1946) | 12.9°F (1968) | 1.51 in (1969) |
| December 11 | 64.0°F (1967) | 10.9°F (1934) | 1.59 in (2008) |
| December 12 | 64.0°F (1946) | 8.1°F (1988) | 1.81 in (1944) |
| December 13 | 64.9°F (1923) | 8.1°F (1988) | 2.35 in (1941) |
| December 14 | 66.9°F (1948) | 8.1°F (1988) | 1.54 in (1953) |
| December 15 | 62.1°F (2008) | 14.0°F (1943) | 0.95 in (1987) |
| December 16 | 68.0°F (1971) | 12.0°F (1930) | 1.99 in (1974) |
| December 17 | 64.9°F (1937) | 10.0°F (1951) | 0.95 in (2000) |
| December 18 | 70.0°F (2006) | 16.0°F (1989) | 1.76 in (1977) |
| December 19 | 64.9°F (1931) | 12.0°F (1963) | 0.80 in (1945) |
| December 20 | 63.0°F (1931) | 3.9°F (1942) | 1.51 in (1934) |
| December 21 | 64.9°F (1923) | 3.9°F (1942) | 1.42 in (1946) |
| December 22 | 63.0°F (2011) | 8.1°F (1989) | 1.61 in (1969) |
| December 23 | 64.0°F (1931) | 8.1°F (1989) | 1.15 in (2011) |
| December 24 | 62.1°F (1941) | 6.1°F (1983) | 1.56 in (2003) |
| December 25 | 73.9°F (1936) | 3.0°F (1983) | 1.37 in (2002) |
| December 26 | 63.0°F (1964) | 6.1°F (1983) | 1.76 in (1975) |
| December 27 | 62.1°F (1936) | 10.9°F (1950) | 2.16 in (1930) |
| December 28 | 66.9°F (2008) | 9.0°F (1933) | 1.40 in (1932) |
| December 29 | 66.9°F (1984) | 8.1°F (1933) | 1.20 in (1942) |
| December 30 | 63.0°F (1984) | 5.0°F (1962) | 1.50 in (1942) |
| December 31 | 69.1°F (1940) | 3.0°F (1962) | 1.15 in (1948) |