Islip, New York
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 23° 39° -7° (1988) 69° (2002) 4.27" NA
February 24° 41° 1° (1996) 67° (1991) 3.33" NA
March 31° 48° 8° (1990) 82° (1990) 4.76" NA
April 40° 58° 24° (2007) 94° (2002) 4.13" NA
May 49° 69° 34° (2000) 98° (1996) 3.9" NA
June 60° 77° 43° (2001) 95° (1999) 3.71" NA
July 66° 83° 50° (1988) 102° (1999) 2.93" NA
August 64° 82° 45° (1986) 100° (2001) 4.48" NA
September 57° 75° 38° (1997) 92° (1998) 3.39" NA
October 45° 64° 28° (1985) 88° (2007) 3.63" NA
November 36° 54° 11° (1989) 78° (1990) 3.86" NA
December 27° 44° 5° (2004) 77° (1998) 4.13" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 64° 81° 50° (1988) 87° (2001) 0.1" NA
Jul 2 64° 81° 54° (1988) 90° (2002) 0.1" NA
Jul 3 64° 82° 51° (2001) 94° (2002) 0.1" NA
Jul 4 65° 82° 54° (1986) 96° (2002) 0.09" NA
Jul 5 65° 82° 60° (1996) 102° (1999) 0.09" NA
Jul 6 65° 82° 57° (2001) 99° (1999) 0.09" NA
Jul 7 65° 82° 54° (2001) 95° (1986) 0.09" NA
Jul 8 65° 83° 57° (2000) 94° (1993) 0.09" NA
Jul 9 65° 83° 58° (1984) 95° (1993) 0.09" NA
Jul 10 66° 83° 56° (1991) 98° (1993) 0.09" NA
Jul 11 66° 83° 57° (1996) 93° (1988) 0.09" NA
Jul 12 66° 83° 55° (2002) 91° (1993) 0.09" NA
Jul 13 66° 83° 52° (2001) 91° (1994) 0.08" NA
Jul 14 66° 83° 57° (1999) 94° (1997) 0.08" NA
Jul 15 66° 83° 56° (1999) 97° (1995) 0.09" NA
Jul 16 66° 83° 57° (1993) 93° (1999) 0.09" NA
Jul 17 66° 84° 58° (1987) 94° (1997) 0.09" NA
Jul 18 66° 84° 61° (2003) 98° (1999) 0.09" NA
Jul 19 66° 84° 57° (2000) 92° (1999) 0.09" NA
Jul 20 66° 84° 52° (1996) 97° (1991) 0.09" NA
Jul 21 67° 84° 58° (2001) 101° (1991) 0.09" NA
Jul 22 67° 84° 59° (1993) 96° (1998) 0.09" NA
Jul 23 67° 84° 58° (2000) 95° (1991) 0.09" NA
Jul 24 67° 84° 58° (1992) 89° (1999) 0.1" NA
Jul 25 67° 84° 55° (2002) 94° (1987) 0.1" NA
Jul 26 67° 84° 57° (2002) 93° (2005) 0.1" NA
Jul 27 67° 84° 56° (2001) 94° (1999) 0.1" NA
Jul 28 67° 84° 56° (2001) 96° (1999) 0.11" NA
Jul 29 67° 84° 58° (1984) 96° (2002) 0.11" NA
Jul 30 66° 84° 58° (2001) 95° (1988) 0.11" NA
Jul 31 66° 84° 55° (2001) 93° (2002) 0.12" NA
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