Main page http://i4weather.net HAGERSTOWN MD 1E 90 DEGREE DAYS MOST 90 DEGREE DAYS IN ONE SEASON 56 2010 54 1900 54 1966 53 1983 51 1991 48 1988 46 1898 MOST 90 DEGREE DAYS IN THE MONTH OF APRIL 4 1976 MAY 8 1911 JUNE 15 1994 JULY 23 1999 Least 0 in 2000 AUGUST 20 1900 Least 0 in 1927, 2008, 2014, 2013 had 1 SEPT 14 1961 OCT 3 1941,1959 CONSECUTIVE DAYS 90 F. OR HIGHER 22 DAYS 1988 JULY 28 - AUG 18 18 DAYS 1966 JUNE 20 - JULY 7 Most 95+ days in one Season 25 in 1988 Most 95+ days in one Month 14 July 1999, 13 July 1988 CONSECUTIVE DAYS 95 F. OR HIGHER 9 Days 1988 Aug 9 - 17 Aug 9th 96 F. Aug 10th 96 F. Aug 11th 96 F. Aug 12th 98 F. Aug 13th 98 F. Aug 14th 97 F. Aug 15th 103 F. Aug 16th 95 F. Aug 17th 102 F. 8 DAYS 1953 AUG 27 - SEPT 3 AUG 27 95 F. AUG 28 97 F. AUG 29 97 F. THIS WAS ALL PART OF AN 11 DAY HEAT WAVE OF 90+ WHICH AUG 30 100 F. BEGAN ON AUG 25 - SEPT 4. THIS AND THE ABOVE 1988 STRETCH AUG 31 100 F. ARE PROBABLY THE TOP HOTTEST WEEKS OR STRETCH EVER. SEP 1 98 F. SEP 2 100 F SEP 3 100 F CONSECUTIVE DAYS OF 97 F. OR HIGHER 7 DAYS 1953 AUG 28 - SEPT 3 (SEE ABOVE) EARLIEST 90 F. IN THE YEAR IS 92 F. ON APRIL 6th 2010 LATEST 90 F. IN THE YEAR IS 90 F. ON OCTOBER 13 1954 Least Number of 90 degree days in one year is 3 in 1907 2 in July and 1 in August. It did not hit 90 until July 8th for longest into the season with hiting the 90 degree mark.