New Castle, Delaware
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° 40° -14° (1985) 75° (1950) 3.01" 5.9"
February 27° 44° -11° (1899) 78° (1985) 2.78" 8.3"
March 34° 52° 2° (1984) 86° (1998) 3.92" 1.9"
April 43° 64° 11° (1923) 97° (1896) 3.5" 0.3"
May 53° 73° 30° (1978) 98° (1914) 3.95" 0"
June 63° 82° 41° (1972) 102° (1894) 3.88" 0"
July 68° 86° 48° (1988) 106° (1901) 4.57" 0"
August 66° 84° 43° (1982) 107° (1918) 3.25" 0"
September 58° 77° 35° (1940) 100° (1983) 4.32" 0"
October 46° 66° 16° (1910) 91° (1951) 3.42" 0"
November 37° 56° 11° (1930) 85° (1950) 3.1" 0.4"
December 29° 45° -7° (1983) 75° (1998) 3.48" 3.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 48° 69° 30° (1978) 88° (1942) 0.11" 0"
May 2 48° 69° 34° (1943) 90° (1894) 0.11" 0"
May 3 48° 69° 33° (2005) 88° (1894) 0.11" 0"
May 4 49° 70° 34° (1957) 88° (1965) 0.12" 0"
May 5 49° 70° 35° (1920) 88° (1955) 0.13" 0"
May 6 49° 70° 37° (1917) 89° (1986) 0.12" 0"
May 7 50° 71° 33° (1970) 91° (2000) 0.12" 0"
May 8 50° 71° 34° (1997) 90° (2000) 0.13" 0"
May 9 50° 71° 32° (1947) 94° (1896) 0.12" 0"
May 10 51° 71° 33° (1966) 98° (1895) 0.13" 0"
May 11 51° 72° 32° (1966) 96° (1896) 0.12" 0"
May 12 51° 72° 37° (1962) 91° (1896) 0.12" 0"
May 13 52° 72° 35° (1928) 89° (1991) 0.13" 0"
May 14 52° 72° 36° (1996) 93° (1956) 0.13" 0"
May 15 52° 73° 35° (1939) 88° (1962) 0.13" 0"
May 16 53° 73° 36° (1940) 89° (1951) 0.13" 0"
May 17 53° 73° 35° (1983) 94° (1896) 0.13" 0"
May 18 53° 74° 40° (1967) 94° (1962) 0.13" 0"
May 19 54° 74° 37° (2009) 95° (1962) 0.13" 0"
May 20 54° 74° 37° (2002) 96° (1996) 0.14" 0"
May 21 54° 74° 35° (2002) 95° (1996) 0.13" 0"
May 22 55° 75° 37° (2002) 94° (1941) 0.14" 0"
May 23 55° 75° 36° (1935) 94° (1925) 0.13" 0"
May 24 55° 75° 36° (1963) 94° (1925) 0.13" 0"
May 25 56° 76° 39° (1956) 92° (1991) 0.13" 0"
May 26 56° 76° 40° (1925) 92° (2010) 0.13" 0"
May 27 56° 76° 39° (1925) 93° (1965) 0.13" 0"
May 28 57° 76° 41° (1997) 93° (1941) 0.13" 0"
May 29 57° 77° 40° (1936) 93° (1991) 0.13" 0"
May 30 57° 77° 41° (1961) 98° (1895) 0.14" 0"
May 31 58° 77° 41° (1938) 96° (1895) 0.14" 0"
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