BLOCK ISLAND STATE AP, RHODE ISLAND

Monthly Total Heating Degree Days

(370896)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201209
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1928 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1929 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1930 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1931 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1932 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1934 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1935 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1936 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1937 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1938 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1939 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1940 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1941 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1942 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1943 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1944 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1945 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1946 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1947 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 136.50 4.00 0.00 62.00 316.00 430.50 800.50 1749.50
1949 849.50 793.00 842.00 525.00 325.00 52.50 0.00 1.00 77.00 190.00 564.50 795.00 5014.50
1950 772.50 939.00 946.50 640.50 428.00 96.00 2.14 b 2.50 132.00 263.50 491.00 867.00 5580.64
1951 906.50 836.50 821.50 510.00 277.00 97.00 0.00 1.50 55.50 270.50 620.50 805.00 5201.50
1952 907.00 909.00 856.50 512.00 323.50 28.50 0.00 2.50 68.50 349.50 571.50 844.50 5373.00
1953 883.50 803.00 791.00 540.50 290.50 76.50 7.50 8.00 64.00 272.00 496.00 730.00 4962.50
1954 1054.50 788.00 823.50 561.50 352.50 72.00 5.50 5.50 98.50 235.00 578.50 897.00 5472.00
1955 1074.00 910.00 852.00 573.00 288.50 115.50 0.00 2.00 78.50 266.50 632.50 1122.50 5915.00
1956 1021.50 912.50 961.52 a 676.50 471.50 109.00 16.00 13.00 135.50 316.00 578.50 779.00 5990.52
1957 1128.40 a 860.00 819.50 554.50 315.50 64.00 3.00 17.00 70.50 323.00 497.00 721.50 5373.90
1958 981.00 1065.50 837.00 542.00 399.50 164.50 6.00 4.00 92.00 382.00 542.00 1082.00 6097.50
1959 1057.50 995.50 875.00 567.50 282.50 118.00 2.50 12.00 78.00 285.50 593.00 834.00 5701.00
1960 992.00 856.50 1011.50 562.50 308.00 40.00 2.00 6.50 84.50 319.00 509.50 1031.50 5723.50
1961 1191.00 924.00 889.00 642.00 423.00 107.00 9.00 5.00 40.50 264.50 584.50 942.00 6021.50
1962 1058.50 1022.50 886.00 597.00 321.00 68.00 13.00 12.00 109.00 349.50 651.50 1054.00 6142.00
1963 1081.50 1076.50 868.50 591.00 393.50 95.50 8.00 9.00 166.00 273.00 487.50 1085.50 6135.50
1964 995.50 1031.00 867.00 651.50 314.50 99.00 11.00 16.50 103.50 366.50 560.00 893.00 5909.00
1965 1145.00 990.00 931.00 676.50 328.00 139.50 2.00 20.00 102.00 412.00 665.50 886.50 6298.00
1966 1106.50 938.00 861.00 684.50 435.50 111.00 1.00 0.00 105.50 378.00 531.00 892.00 6044.00
1967 905.50 1016.50 986.00 685.00 512.50 111.50 3.00 10.50 120.00 302.50 701.50 875.50 6230.00
1968 1174.50 1115.50 851.50 551.00 372.50 108.50 8.50 11.50 43.00 245.50 591.00 999.50 6072.50
1969 1066.00 965.50 940.50 580.00 326.50 50.50 7.00 4.00 78.00 324.50 576.00 949.50 5868.00
1970 1261.50 963.50 920.50 611.50 315.50 98.50 0.00 0.00 75.00 295.00 528.50 971.00 6040.50
1971 1186.50 931.50 889.00 664.50 364.00 78.00 0.50 13.50 33.50 166.50 626.00 813.00 5766.50
1972 971.50 989.50 901.00 677.00 357.00 112.00 4.50 5.00 58.00 415.50 641.50 815.50 5948.00
1973 993.00 934.50 724.50 548.00 332.00 39.50 0.00 2.50 104.00 280.00 583.00 788.50 5329.50
1974 950.00 968.50 821.50 538.00 381.50 91.00 6.50 0.00 77.00 424.00 554.50 803.50 5616.00
1975 882.50 893.00 879.00 664.00 287.50 68.50 0.00 7.00 79.00 241.11 d 434.50 951.50 5387.61
1976 1164.50 790.50 748.00 409.50 224.50 31.00 3.50 15.00 92.50 434.52 a 750.50 1096.00 5760.02
1977 1315.00 1021.50 772.00 557.00 281.50 75.00 0.50 3.00 88.00 308.50 514.50 906.00 5842.50
1978 1111.50 1080.50 954.50 633.00 362.00 76.50 17.00 5.50 132.00 338.50 558.00 837.50 6106.50
1979 991.00 1203.00 775.00 591.50 242.50 72.50 19.50 12.50 73.50 319.50 408.00 750.50 5459.00
1980 983.50 1019.50 832.00 512.00 247.00 79.50 0.00 2.00 71.00 380.00 664.00 1021.00 5811.50
1981 1276.00 839.00 906.00 564.50 311.50 35.00 0.00 14.00 99.00 407.00 603.50 907.50 5963.00
1982 1202.50 915.00 867.00 660.50 320.00 119.50 5.00 30.00 101.00 324.00 486.50 728.00 5759.00
1983 957.00 848.50 754.50 527.50 336.00 50.50 1.50 5.00 59.00 279.00 475.00 924.00 5217.50
1984 1081.50 786.50 943.00 572.50 284.50 42.50 1.00 0.00 85.00 209.00 534.00 654.50 5194.00
1985 1090.17 a 903.50 797.50 518.00 270.00 88.00 7.50 3.50 49.00 246.00 442.50 872.00 5287.67
1986 964.00 933.00 799.00 511.50 289.00 77.50 14.50 14.50 106.00 314.50 593.50 809.00 5426.00
1987 1006.00 964.00 797.00 559.50 341.50 57.50 3.50 18.00 56.50 367.00 596.00 835.00 5601.50
1988 1081.50 937.00 826.50 583.50 346.00 106.50 6.50 11.50 90.50 410.50 516.00 879.00 5795.00
1989 889.50 0.00 z 0.00 z 0.00 z 281.50 34.50 6.50 7.50 86.00 317.50 631.50 1193.00 3447.50
1990 850.00 859.50 847.50 584.50 339.50 64.50 9.00 0.00 158.00 226.00 523.00 745.03 a 5206.53
1991 974.00 802.50 751.00 512.50 220.50 44.00 1.00 8.02 b 95.00 276.50 538.00 819.00 5042.02
1992 986.50 891.23 a 888.50 624.00 380.50 92.50 22.00 7.00 87.00 418.00 582.93 a 853.53 a 5833.70
1993 929.00 1076.50 907.00 571.00 256.50 55.00 2.00 0.00 65.50 310.00 551.00 894.00 5617.50
1994 1207.00 983.00 852.50 520.50 363.00 46.50 0.00 0.00 z 47.00 0.00 z 462.50 757.00 5239.00
1995 827.00 816.00 747.00 582.00 337.90 a 60.50 0.00 z 0.00 z 61.50 0.00 z 0.00 z 1029.20 a 4461.10
1996 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1997 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1999 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2000 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2001 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2002 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2003 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2004 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2005 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2006 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2007 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2008 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2009 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2010 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2011 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2012 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1031.58 936.93 856.94 580.91 331.10 80.35 5.17 7.59 85.28 313.32 558.56 886.27 5684.93
S.D. 125.53 96.73 67.36 60.49 60.91 31.69 5.59 6.60 28.71 65.31 72.48 118.62 357.21
SKEW 0.23 0.37 0.11 -0.02 0.69 0.33 1.30 1.01 0.71 0.03 0.18 0.56 -0.31
MAX 1315.00 1203.00 1011.50 685.00 512.50 164.50 22.00 30.00 166.00 434.52 750.50 1193.00 6298.00
MIN 772.50 786.50 724.50 409.50 220.50 28.50 0.00 0.00 33.50 166.50 408.00 654.50 4962.50
NO YRS 47 46 46 46 47 48 47 46 48 46 47 48 44