HIBBING PWR SUBSTN, MINNESOTA

Monthly Total Heating Degree Days

(213727)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 198109
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
1948 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
1949 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
1950 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
1951 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
1952 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
1953 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
1954 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
1955 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
1956 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
1957 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
1958 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
1959 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
1960 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
1961 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
1962 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 129.83 a 92.00 95.50 365.00 597.50 1000.00 1626.00 3905.83
1963 2078.00 1673.50 1168.00 697.50 482.00 119.50 30.50 92.50 228.00 334.50 981.00 1825.00 9710.00
1964 1584.62 a 1442.00 1419.50 760.50 290.00 183.00 12.00 197.50 388.50 666.50 1093.00 1813.00 9850.12
1965 1933.50 1698.00 1549.50 789.50 392.00 181.00 81.50 128.50 565.50 664.00 1205.50 1424.00 10612.50
1966 2166.50 1543.00 1169.22 a 918.50 541.00 141.00 5.68 a 133.00 304.00 703.50 1280.50 1671.00 10576.90
1967 1776.00 1766.50 1292.00 839.00 569.00 149.00 75.00 129.00 251.50 737.00 1210.50 1619.00 10413.50
1968 1794.00 1672.50 1073.50 746.50 490.50 159.50 84.50 121.50 266.50 599.00 1111.00 1730.00 9849.00
1969 1858.00 1426.00 1366.00 666.00 419.00 352.50 66.50 16.50 285.50 806.00 1139.50 1474.50 9876.00
1970 1955.00 1573.00 1399.50 824.50 528.50 108.00 28.50 60.50 313.50 656.00 1172.50 1744.00 10363.50
1971 2074.50 1475.00 1319.00 784.50 477.50 67.50 92.00 114.00 297.00 557.00 1173.50 1667.00 10098.50
1972 2076.00 1724.50 1400.00 877.50 273.00 122.00 82.00 106.50 426.50 800.00 1205.00 1883.00 10976.00
1973 1663.50 1458.00 962.00 779.48 a 452.50 124.50 45.50 53.50 360.00 533.00 1154.50 1680.50 9266.98
1974 1901.00 1504.00 1391.00 780.00 546.00 155.00 22.50 134.50 482.50 663.50 1112.00 1435.00 10127.00
1975 1774.00 1499.00 1447.00 945.50 289.00 169.00 33.50 f 65.00 k 276.50 j 413.50 j 560.00 m 896.00 o 6123.50
1976 1172.50 m 890.50 i 984.00 h 330.50 m 252.00 k 61.00 j 23.50 m 48.50 i 241.00 l 560.00 m 903.50 i 1016.00 o 0.00
1977 1095.50 n 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 196.50 o 446.00 j 689.50 k 637.00 s 0.00
1978 1105.50 n 1125.50 i 894.00 k 501.50 k 228.50 j 161.00 i 118.26 d 109.00 k 229.00 m 400.00 n 777.00 l 939.00 o 118.26
1979 1532.00 j 1052.00 k 871.00 l 692.00 i 461.50 i 200.50 i 59.50 n 196.50 h 234.50 o 507.00 l 814.00 j 684.00 p 0.00
1980 1285.50 j 0.00 z 0.00 z 188.50 r 200.00 k 109.50 i 23.50 n 59.00 l 291.00 k 528.50 k 740.00 k 1052.50 m 0.00
1981 1059.50 l 873.50 l 797.00 k 544.50 i 241.50 o 179.00 j 57.50 i 25.50 k 234.50 k 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1894.97 1573.46 1304.32 800.69 442.31 154.38 59.75 106.38 348.77 639.81 1141.42 1660.92 10143.33
S.D. 175.02 118.58 166.06 80.31 103.14 64.86 35.07 45.07 97.30 123.77 83.82 146.19 469.52
SKEW -0.14 0.30 -0.67 0.24 -0.57 2.03 -0.13 -0.14 0.88 -0.94 -0.52 -0.32 -0.03
MAX 2166.50 1766.50 1549.50 945.50 569.00 352.50 118.26 197.50 565.50 806.00 1280.50 1883.00 10976.00
MIN 1584.62 1426.00 962.00 666.00 273.00 67.50 5.68 16.50 228.00 334.50 981.00 1424.00 9266.98
NO YRS 13 13 13 13 13 14 14 13 13 13 13 13 12