Public Information Statement
Issued by NWS

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NOUS41 KPBZ 241112
PNSPBZ

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
711 AM EDT FRI MAY 24 2013

...FROST FACTS FOR PITTSBURGH AREA...

NORMALS...
AVERAGE DATE OF LAST KILLING FROST IN SPRING            APRIL 21
AVERAGE DATE OF FIRST KILLING FROST IN AUTUMN         OCTOBER 20
AVERAGE LENGTH OF GROWING SEASON                        182 DAYS

RECORDS...
LATEST DATE OF KILLING FROST IS SPRING               MAY 29 1894
EARLIEST DATE OF KILLING FROST IN AUTUMN       SEPTEMBER 17 1959
LATEST DATE OF KILLING FROST IN AUTUMN          NOVEMBER 11 1994

SHORTEST GROWING SEASON   131 DAYS      MAY 29 1894 - OCT 7 1894

LONGEST GROWING SEASON    215 DAYS      APR  1 1901 - NOV 2 1901
                          215 DAYS      APR  8 1902 - NOV 9 1902

COLDEST TEMPERATURES SO LATE IN THE SPRING SEASON...

    34    JUN 11 1972
    33    MAY 25 1925
    30    MAY 24 1963
    27    MAY 10 1966
    26    MAY  7 1970

$$
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