July 1999 was the 7th warmest July in 105 years of record in the Northeast and the warmest since 1955. The regionwide departure was 3.0 degrees warmer than normal. Connecticut reported the largest monthly temperature departure at 3.9 degrees warmer than normal. It was that state's 5th warmest July on record. Delaware reported their 3rd warmest July on record. Vermont had the smallest departure, but was still quite respectable at 2.2 degrees warmer than normal. The 102 degree temperature reading at Islip on the 5th was an all-time high reading for that location.
Rainfall totals across the region ranged from less than an inch to well over six inches. The average amount for the twelve states was 2.98 inches or 76% of normal. It was the region's 12th driest July on record. New Jersey was the driest state, averaging only 41% of normal. Northern New York and New England fared somewhat better. New Hampshire reported 100% of normal and Vermont had 99% of normal.
Monthly Summary of State Temperature and Precipitation Averages.
July 1999 was the driest July on record at the Lehigh Valley International Airport. Only 0.33 inches of rain fell during the month. The normal is 4.14 inches and the previous record was 0.42 inches in 1955. This comes on top of a very dry June. Only 0.98 inches of rain fell during June at the airport for the 4th driest June on record.
New York City, Central Park reported only 0.44 inches of rain during July. The previous driest July was 1910 with 0.49 inches.
Maximum Temperature Records (degrees F) City Date New Previous Dulles, AP, VA 4th 97 96 in 1990 Beckley, WV 4th 89 87 in 1994 Bridgeport, CT 5th 100 95 in 1955 Hartford, CT 5th 99 98 in 1955 National Airport, DC 5th 102 101 in 1919 Portland, ME 5th 94 92 in 1955 Baltimore, MD 5th 102 100 in 1990 Atlantic City Airport, NJ 5th 99 98 in 1990 Atlantic City Marina, NJ 5th 101 97 in 1990 Newark, NJ 5th 103 101 in 1955 Binghamton, NY (tie) 5th 91 91 in 1955 Central Park, NY 5th 101 98 in 1955 Islip, NY 5th 102 * 101 in 1991 Allentown, PA (tie) 5th 98 98 in 1955 Harrisburg, PA 5th 102 101 in 1919 Philadelphia, PA (tie) 5th 100 100 in 1919 Providence, RI (tie) 5th 98 98 in 1919 Dulles AP, VA (tie) 5th 99 99 in 1990 Montpelier, VT (tie) 5th 87 87 in 1988 Beckley, WV 5th 90 89 in 1993 Bridgeport, CT 6th 96 93 in 1994 Hartford, CT 6th 99 98 in 1911 National Airport, DC 6th 103 100 in 1977 Wilmington, DE (tie) 6th 98 98 in 1901 Baltimore, MD 6th 101 98 in 1988 Atlantic City Airport, NJ 6th 99 93 in 1994 Atlantic City Marina, NJ 6th 98 95 in 1900 Newark, NJ 6th 102 99 in 1986 Central Park, NY 6th 101 98 in 1986 Allentown, PA 6th 100 97 in 1988 Harrisburg, PA 6th 102 99 in 1988 Philadelphia, PA (tie) 6th 98 98 in 1994 Providence, RI (tie) 6th 97 97 in 1911 Beckley, WV (tie) 6th 89 89 in 1994 Charleston, WV 6th 96 95 in 1994 Huntington, WV 6th 98 97 in 1949 Blue Hills, MA (tie) 16th 94 94 in 1983 Massena, NY 16th 92 91 in 1975 Hartford, CT 17th 97 96 in 1982 Caribou, ME 17th 92 91 in 1977 Portland, ME 17th 97 96 in 1953 Concord, NH 17th 97 96 in 1953 Boston, MA (tie) 17th 98 98 in 1977 Massena, NY (tie) 17th 92 91 in 1982 Syracuse, NY 17th 94 92 in 1991 Allentown, PA 17th 99 97 in 1988 Harrisburg, PA (tie) 17th 100 100 in 1997 Scranton, PA 17th 96 95 in 1953 Providence, RI (tie) 17th 97 97 in 1977 Burlington, VT 17th 97 94 in 1953 Blue Hills, MA (tie) 18th 96 96 in 1991 Allentown, PA (tie) 18th 98 98 in 1955 Harrisburg, PA (tie) 18th 101 101 in 1997 Providence, RI (tie) 18th 98 98 in 1982 Wilmington, DE 19th 100 98 in 1930 Newark, NJ (tie) 19th 100 100 in 1977 Central Park, NY 24th 97 94 in 1987 Allentown, PA 24th 94 93 in 1987 Harrisburg, PA (tie) 24th 96 96 in 1965 Atlantic City Marina, NJ 25th 96 94 in 1949 Newark, NJ 25th 97 96 in 1987 Central Park, NY 25th 97 95 in 1987 Allentown, PA (tie) 25th 95 95 in 1949 Philadelphia, PA 25th 96 95 in 1987 Bridgeport, CT (tie) 27th 91 91 in 1995 Newark, NJ 27th 99 98 in 1963 Atlantic City Airport, NJ 28th 98 96 in 1949 Atlntc Cty Marina, NJ (tie) 28th 96 94 in 1941 Central Park, NY (tie) 28th 97 97 in 1949 Huntington, WV 30th 101 100 in 1940 Parkersburg, WV 30th 100 98 in 1913 Erie, PA 31st 98 92 in 1933 Burlington, VT 31st 96 92 in 1975 Beckley, WV 31st 90 87 in 1995 Elkins, WV 31st 93 91 in 1915 Huntington, WV 31st 100 98 in 1953 Morgantown, WV 31st 97 96 in 1995 Parkersburg, WV 31st 102 96 in 1954 *All-time record high Minimum Temperature Records (degrees F) City Date New Previous Parkersburg, WV (tie) 11th 51 51 in 1898 Bridgeport, CT 12th 50 57 in 1990 Binghamton, NY 12th 48 49 in 1978 Bridgeport, CT (tie) 14th 60 60 in 1976 Boston, MA (tie) 14th 55 55 in 1937 Providence, RI (tie) 14th 53 53 in 1937 All-Time Monthly Average Temperature Records (degrees F) City New Previous Atlantic City Marina, NJ 78.4 78.1 in 1993 Harrisburg, PA 81.9 80.4 in 1955 New York Central Park, NY 81.4 80.9 in 1955 Daily Precipitation Records (inches) City Date New Previous Harrisburg, PA 22nd 2.07 1.72 in 1896 Pittsburgh, PA 28th 3.48* 2.73 in 1927 *Also a record for the month of July. Previous record for any July calendar day was 3.20 inches on July 26, 1921.