ONTONAGON, MICHIGAN

Monthly Total Heating Degree Days

(206210)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 197705
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 495.50 200.50 34.21 b 77.50 205.50 488.50 851.50 1303.50 3656.71
1949 1397.00 1316.00 1215.50 623.00 388.50 86.00 30.00 50.00 271.00 404.50 927.50 1314.00 8023.00
1950 1615.00 1295.50 1328.50 965.00 484.50 173.00 117.50 211.00 249.00 474.50 1062.00 1421.00 9396.50
1951 1514.00 1309.50 1298.26 b 811.00 343.50 211.00 69.00 133.82 a 321.00 602.00 1149.50 1471.95 c 9234.52
1952 1450.50 1215.31 b 1224.50 634.00 445.00 96.50 26.50 80.00 208.00 673.00 858.00 1165.50 8076.81
1953 1371.00 1243.50 1059.00 843.00 452.50 166.50 46.50 39.27 a 216.43 b 339.40 b 787.00 1236.00 7800.09
1954 1553.62 a 993.50 1195.00 737.59 a 596.00 144.50 66.00 92.00 267.50 579.50 815.17 a 1218.50 8258.88
1955 1416.00 1270.00 1314.00 496.50 290.50 115.50 12.50 11.00 216.50 466.00 1035.50 1437.00 8081.00
1956 1379.00 1325.71 a 1272.50 838.00 502.20 a 140.50 90.00 57.00 327.00 323.50 889.00 1272.03 a 8416.45
1957 1627.00 1318.50 1265.50 662.00 405.00 175.86 a 47.00 65.50 287.50 535.50 901.00 1258.00 8548.36
1958 1307.00 1364.50 1158.00 644.48 a 432.97 a 245.50 71.50 86.80 a 179.50 482.00 880.00 1539.50 8391.75
1959 1685.50 1464.50 1174.00 755.00 287.00 114.50 42.00 31.50 199.50 643.00 1153.50 1113.00 8663.00
1960 1409.00 1321.00 1414.50 698.00 481.50 205.00 98.00 63.50 212.14 b 517.00 844.00 1426.00 8689.64
1961 1561.50 1187.50 1048.50 802.00 477.40 a 183.00 61.50 29.00 250.50 457.00 881.00 1352.50 8291.40
1962 1598.00 1434.50 1171.50 826.50 319.50 208.50 97.50 77.00 302.50 500.00 871.50 1358.00 8765.00
1963 1784.00 1562.00 1120.00 695.00 446.50 181.50 54.00 100.00 204.00 222.00 746.00 1462.50 8577.50
1964 1261.50 1241.00 1212.00 675.50 260.50 184.50 45.00 113.50 249.00 520.50 867.50 1475.50 8106.00
1965 1577.50 1446.50 1454.00 773.00 300.50 201.00 119.00 157.00 393.00 487.50 936.00 1165.00 9010.00
1966 1647.00 1335.50 1022.00 833.00 540.00 168.00 32.50 137.00 266.00 591.50 966.00 1340.00 8878.50
1967 1448.00 1552.00 1204.50 727.00 586.50 195.00 127.00 151.00 238.50 617.50 1008.00 1285.00 9140.00
1968 1521.50 1468.00 1021.50 679.00 532.00 258.50 84.00 93.50 207.00 448.50 922.50 1347.00 8583.00
1969 1442.50 1292.00 1320.00 728.50 428.00 333.50 104.00 41.00 252.00 653.00 931.50 1299.50 8825.50
1970 1653.00 1478.50 1391.50 756.00 500.00 159.00 51.50 51.00 255.00 479.00 969.50 1345.50 9089.50
1971 1623.50 1360.15 b 1295.00 742.50 560.00 172.00 118.00 164.82 a 266.00 408.50 965.50 1360.50 9036.47
1972 1740.50 1630.00 1508.50 964.00 389.50 311.50 129.50 166.00 348.46 d 686.00 994.50 1494.50 10362.96
1973 1456.50 1375.50 972.07 c 766.50 580.50 188.50 96.50 93.50 316.50 428.00 930.00 1392.50 8596.57
1974 1596.50 1559.50 1298.50 859.50 563.50 260.50 47.53 a 132.00 417.00 641.50 908.00 1261.50 9545.53
1975 1431.00 1276.00 1268.50 951.00 371.00 207.00 73.00 82.67 a 382.76 a 528.50 871.50 1398.00 8840.93
1976 1596.00 1190.00 1212.50 699.50 542.50 124.50 78.00 155.50 412.00 761.50 1131.00 1665.98 b 9568.98
1977 0.00 z 1392.00 1036.00 710.00 235.82 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3373.82
Period of Record Statistics
MEAN 1523.68 1352.35 1223.30 755.04 441.28 186.60 71.35 94.60 273.13 515.82 932.89 1351.02 8742.78
S.D. 129.78 135.58 134.86 105.98 104.11 57.29 33.24 49.58 67.16 118.84 101.10 121.01 563.54
SKEW -0.03 -0.12 0.02 0.13 -0.35 0.62 0.20 0.42 0.77 -0.20 0.65 0.30 0.74
MAX 1784.00 1630.00 1508.50 965.00 596.00 333.50 129.50 211.00 417.00 761.50 1153.50 1665.98 10362.96
MIN 1261.50 993.50 972.07 496.50 235.82 86.00 12.50 11.00 179.50 222.00 746.00 1113.00 7800.09
NO YRS 28 29 29 29 30 29 29 29 29 29 29 29 28