CROW AGENCY, MONTANA

Monthly Total Heating Degree Days

(242112)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199107
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
1898 0.00 z 0.00 z 0.00 z 438.00 346.50 85.50 21.50 2.00 191.00 673.00 1027.50 1328.00 4113.00
1899 1367.00 1570.50 1258.00 624.50 362.00 134.50 14.00 32.50 159.50 630.50 787.78 c 1296.50 8237.28
1900 1186.50 1204.00 887.50 443.50 157.00 19.00 17.50 16.00 261.00 531.00 1037.00 992.52 a 6752.52
1901 1302.53 b 1231.00 784.82 a 485.17 a 129.68 a 159.00 8.50 0.50 322.00 421.00 743.04 b 1128.50 6715.74
1902 674.00 o 1040.50 939.00 604.00 192.00 114.50 30.00 39.00 269.00 521.00 935.89 b 1355.50 6040.39
1903 1151.00 1238.50 1022.00 564.31 a 325.50 28.00 31.00 17.50 279.00 490.00 1020.52 a 1111.50 7278.83
1904 1213.50 1341.77 a 1132.50 485.50 292.50 106.00 5.50 24.50 173.50 464.50 751.00 1157.00 7147.77
1905 1412.00 1415.00 705.50 585.00 403.00 135.00 4.50 11.50 117.00 659.00 856.00 1240.00 7543.50
1906 1261.00 1033.50 1190.00 469.50 307.00 124.50 22.50 36.00 140.40 e 492.50 1006.50 1273.00 7356.40
1907 1767.50 1090.00 781.72 a 673.50 447.50 133.50 11.00 61.50 245.00 458.00 839.00 1161.50 7669.72
1908 682.50 k 702.00 j 947.50 494.50 335.00 130.00 14.50 67.00 189.50 630.50 887.50 1275.50 4971.50
1909 1544.00 1118.50 901.00 770.00 393.50 91.50 11.00 13.00 178.00 566.00 911.00 1654.50 8152.00
1910 1424.50 1413.00 570.00 104.50 u 162.50 l 41.00 i 5.00 104.00 205.00 465.00 939.50 1305.00 6431.00
1911 1508.00 1362.00 804.50 619.00 80.50 w 32.50 25.50 69.48 b 158.00 f 680.50 1206.50 1332.50 7640.48
1912 1552.00 1070.50 1382.60 a 535.71 b 319.50 80.50 29.00 48.57 a 410.69 a 647.90 a 808.00 1031.50 7916.47
1913 1488.00 1317.50 1179.00 446.50 297.08 a 18.50 15.00 0.00 q 227.50 602.29 c 775.20 e 1216.00 7582.57
1914 1106.50 1144.35 e 838.50 470.00 257.50 68.00 0.00 41.00 188.28 a 334.00 i 724.66 a 1577.00 6415.78
1915 0.00 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
1916 0.00 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
1917 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 k 19.50 168.50 582.50 f 660.50 1347.00 2195.50
1918 1543.50 1254.00 848.00 524.00 294.50 33.00 18.48 e 31.50 192.50 331.50 1062.00 1059.00 7191.98
1919 1068.50 1257.00 1005.00 501.50 226.00 58.50 0.00 2.50 117.00 813.50 1235.50 1561.50 7846.50
1920 1448.50 1154.50 1074.50 842.50 265.00 93.00 0.00 48.00 143.28 a 511.00 1026.00 1250.00 7856.28
1921 1055.00 864.00 778.00 642.50 472.50 11.00 27.38 a 0.00 197.50 333.50 987.00 1206.00 6574.38
1922 1636.50 1559.50 1028.00 505.00 405.00 25.00 17.00 0.00 69.00 390.50 799.00 1509.00 7943.50
1923 1055.00 1271.00 959.00 631.00 365.00 33.00 0.00 33.50 201.50 592.50 773.50 1183.50 7098.50
1924 1577.00 996.50 1070.50 501.50 345.50 102.50 26.50 15.50 233.00 379.00 875.50 1574.50 7697.50
1925 1312.00 857.00 853.00 391.50 385.00 79.50 17.50 38.50 136.20 e 870.00 937.00 994.00 6871.20
1926 1166.50 854.58 d 866.93 b 509.50 153.00 58.00 0.00 8.00 340.00 414.50 904.00 1353.50 6628.51
1927 1452.00 1102.00 874.50 694.00 519.00 190.00 53.50 130.50 419.50 548.38 b 1035.50 1831.50 8850.38
1928 1428.07 a 1256.00 825.00 735.50 204.50 190.00 31.50 93.00 142.50 f 580.50 922.00 1063.50 f 6266.07
1929 1764.00 1464.00 930.00 645.00 c 270.14 c 105.00 8.02 b 0.00 298.00 494.00 1053.50 1318.00 8349.66
1930 1805.00 813.50 954.50 341.38 a 275.50 47.50 3.50 6.72 a 214.50 694.50 878.00 1108.50 7143.10
1931 1171.00 663.00 g 987.00 556.50 258.91 d 21.50 18.00 13.50 189.50 549.39 d 988.00 1379.50 6132.80
1932 1543.00 1286.00 1236.00 472.50 210.00 0.00 q 2.67 b 28.00 234.00 721.50 868.00 1484.50 8086.17
1933 1361.50 1342.50 868.00 696.92 d 321.37 a 0.00 m 0.00 39.50 162.50 461.50 786.00 1258.50 7298.29
1934 1089.50 853.00 796.50 442.00 94.50 34.50 6.50 32.00 270.00 418.50 778.50 1162.00 5977.50
1935 1218.00 f 823.50 958.00 634.00 362.50 115.00 0.00 35.00 140.50 594.50 1014.50 1075.50 5753.00
1936 1422.00 1920.00 945.50 629.50 114.00 53.50 0.00 9.41 c 204.00 506.50 920.00 1215.00 7939.41
1937 1926.00 1387.00 970.00 345.00 f 131.00 134.00 0.00 6.50 108.00 388.50 919.50 1323.50 7294.00
1938 1168.50 1158.50 865.50 568.50 383.50 80.50 1.00 30.00 61.00 398.50 1069.00 1105.00 6889.50
1939 756.00 1350.00 815.50 434.00 136.50 f 135.00 0.00 57.00 187.00 481.50 732.00 906.00 5854.00
1940 1573.00 1101.00 749.00 615.00 192.50 51.50 2.00 12.00 63.00 375.50 1152.00 1138.00 7024.50
1941 1219.00 941.00 877.00 620.00 173.00 94.00 6.00 17.50 306.00 610.00 889.00 1221.00 6973.50
1942 1399.50 1227.50 909.50 475.50 396.50 144.00 3.00 22.50 234.50 473.00 943.50 1204.50 7433.50
1943 1609.50 962.00 1237.00 417.00 427.50 161.50 15.00 8.00 212.00 459.50 894.00 1142.50 7545.50
1944 1189.50 1234.50 1115.50 580.00 249.50 213.00 24.28 a 52.50 238.50 503.23 a 975.50 1357.00 7733.02
1945 1329.38 a 1119.50 842.50 645.50 355.00 212.00 8.27 a 19.50 262.00 432.00 930.50 1371.00 7527.15
1946 1162.00 1048.00 727.00 389.00 358.00 90.50 1.50 44.50 223.50 677.00 1015.00 1225.50 6961.50
1947 1291.50 1151.00 1082.00 595.50 262.00 166.50 1.00 18.00 215.50 402.50 1025.00 1226.00 7436.50
1948 1184.50 1241.00 1119.50 482.50 256.00 66.50 7.50 h 1.50 135.52 a 493.00 904.50 1483.87 a 7368.38
1949 1857.50 1374.50 1053.00 417.50 220.62 a 72.00 4.13 a 10.13 e 149.00 h 692.33 d 619.50 1434.00 7755.22
1950 2026.00 1098.00 1079.00 632.50 415.50 133.50 27.38 a 47.61 c 305.89 b 458.00 1030.50 1145.40 b 8399.28
1951 1532.90 b 1061.50 1267.50 667.22 c 251.10 a 220.56 c 52.81 d 17.16 c 322.76 a 617.00 955.71 b 1341.00 f 6966.22
1952 1636.59 b 1160.50 1095.85 a 417.86 b 254.31 d 35.89 b 8.02 b 22.98 b 129.81 d 500.28 b 1017.93 a 1132.57 b 7412.58
1953 977.03 b 865.20 c 835.85 d 740.00 c 422.78 b 102.32 b 2.50 2.00 167.22 c 419.61 c 746.90 a 832.00 f 5281.41
1954 1566.50 750.96 c 1141.50 655.86 a 316.00 f 171.00 2.58 a 8.61 d 185.17 a 575.05 a 706.50 1119.50 6883.24
1955 1214.68 a 1234.50 1184.64 c 627.50 289.33 a 123.00 23.77 a 8.55 b 252.00 450.03 b 1235.50 1386.00 8029.51
1956 1438.00 1245.00 916.00 669.50 268.50 16.00 17.57 a 48.16 c 154.50 448.00 888.00 1076.50 7185.73
1957 1729.80 a 1088.50 880.83 b 647.68 b 255.48 b 107.50 4.00 7.00 202.50 602.95 a 921.50 937.00 7384.74
1958 1017.00 1082.00 955.00 582.00 129.50 121.50 33.00 4.65 a 178.00 476.76 b 868.00 1256.00 6703.41
1959 1425.00 1303.00 775.50 574.66 a 414.00 51.50 12.50 4.00 241.03 a 266.50 r 1131.50 1060.00 6992.69
1960 1365.50 1225.50 932.07 a 586.67 c 274.50 59.50 10.00 61.50 191.90 a 483.17 b 918.00 1272.50 7380.80
1961 1284.00 807.00 749.00 662.00 291.50 8.50 0.52 a 1.66 c 364.50 617.42 a 1090.50 1344.88 a 7221.48
1962 1546.38 a 1163.12 c 1090.17 a 438.62 a 298.24 b 89.00 2.50 55.28 a 243.10 a 413.85 a 783.10 a 1035.50 7158.87
1963 1632.00 919.00 788.00 593.00 272.59 b 83.50 4.81 b 2.00 g 67.50 d 289.13 e 500.00 l 1407.50 6057.03
1964 1195.50 1007.00 1049.72 b 553.50 269.50 127.24 a 0.00 82.67 a 256.00 467.00 0.00 z 1506.50 6514.63
1965 1182.50 1121.00 1298.00 558.00 363.00 82.50 4.50 34.50 482.00 359.00 811.00 1201.50 7497.50
1966 1564.00 1256.00 902.00 660.00 211.83 a 95.00 0.00 47.00 64.00 498.50 991.50 1309.50 7599.33
1967 1173.50 941.00 977.50 618.00 372.00 117.50 1.55 a 0.00 113.50 448.00 915.50 1339.50 7017.55
1968 1544.00 1010.50 706.50 629.00 381.30 a 123.00 19.00 39.50 157.00 473.50 895.50 1531.18 c 7509.98
1969 1871.00 1246.00 1130.47 a 419.50 267.00 156.50 6.95 b 3.50 97.00 602.00 h 797.50 1112.50 7107.92
1970 1452.50 957.50 1071.50 742.00 259.00 60.00 5.00 1.00 261.00 615.50 961.00 1322.50 7708.50
1971 1436.50 1149.50 958.00 561.50 285.50 64.50 23.52 b 2.07 a 249.50 582.00 894.00 1461.65 a 7668.23
1972 1558.00 1138.50 743.00 566.00 288.00 25.00 53.00 0.50 257.00 561.74 b 884.00 1474.50 7549.24
1973 1410.00 1018.00 780.00 700.00 311.50 74.50 8.00 2.50 219.50 405.00 1006.50 1198.27 e 7133.77
1974 1316.50 864.00 841.50 443.28 a 374.58 a 79.00 1.07 b 45.50 238.50 434.00 e 831.50 1139.00 6608.43
1975 1246.00 1363.50 995.62 a 749.00 367.50 116.11 c 0.00 23.52 b 184.00 320.50 l 976.00 1217.30 c 7238.55
1976 1319.00 931.62 a 965.50 485.89 b 0.00 z 106.11 c 0.00 e 0.00 z 119.46 b 445.00 h 692.00 f 1138.50 5066.09
1977 1422.42 e 841.17 d 640.00 g 289.50 h 204.94 d 19.80 e 0.50 h 34.50 181.15 d 467.77 c 983.33 c 1427.79 e 5582.88
1978 1325.50 f 1052.50 f 1001.41 c 324.00 h 258.50 f 66.00 f 19.67 e 15.00 j 145.00 f 374.00 f 927.00 f 980.50 k 1021.08
1979 1877.29 e 1295.78 a 938.55 b 603.00 e 236.00 h 85.00 c 0.00 e 0.00 f 75.00 d 240.50 k 781.00 g 740.00 h 4874.62
1980 1452.72 b 1032.52 e 606.00 k 253.50 j 137.00 n 30.50 i 6.56 e 58.50 f 199.00 k 0.00 z 0.00 z 0.00 z 2491.80
1981 0.00 z 732.50 h 536.00 i 303.50 j 228.50 j 129.00 e 8.04 d 7.50 f 108.60 e 452.50 h 644.00 h 916.00 i 245.64
1982 1691.00 1194.00 959.50 638.00 359.00 156.50 18.00 3.50 251.50 522.50 1041.50 860.00 j 6835.00
1983 419.00 r 786.69 b 784.62 b 465.50 i 373.60 b 37.00 n 9.30 a 0.00 a 233.79 a 289.00 k 630.50 i 1907.02 a 4095.03
1984 639.00 m 901.07 a 445.00 o 581.67 c 315.50 94.00 1.55 a 1.00 l 194.00 k 591.14 b 932.14 b 708.00 r 3417.07
1985 1564.97 b 1306.67 a 988.50 448.45 a 150.72 b 103.50 2.77 c 24.50 i 281.00 f 553.02 c 1531.11 c 876.00 k 6649.70
1986 1101.00 1174.00 622.00 582.32 b 344.50 17.00 8.50 0.00 a 249.50 541.50 1019.44 c 1173.00 6832.77
1987 1222.95 a 872.00 842.17 a 373.50 131.00 f 41.50 8.27 a 48.57 a 178.50 546.50 813.21 b 1260.00 6207.16
1988 1502.50 1123.50 824.50 276.50 n 197.00 23.00 2.00 13.00 222.00 449.50 876.50 1226.00 6459.50
1989 1373.00 1505.50 1122.00 552.50 300.50 84.00 0.00 0.00 z 320.50 m 0.00 z 246.50 v 537.00 t 4937.50
1990 387.00 u 687.00 k 539.00 m 246.50 q 227.00 o 58.00 k 0.50 o 0.00 q 8.50 x 310.00 r 518.00 o 1039.00 l 0.00
1991 821.50 p 415.50 n 390.00 r 694.00 401.50 111.00 4.00 p 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1206.50
Period of Record Statistics
MEAN 1403.91 1141.14 949.27 567.06 296.85 92.22 11.17 26.74 206.56 517.85 929.44 1272.97 7389.71
S.D. 241.82 209.76 161.00 104.80 89.44 51.16 12.42 26.31 81.29 109.37 141.41 184.87 539.00
SKEW 0.19 0.52 0.33 0.04 -0.14 0.37 1.52 1.41 0.65 0.63 0.94 0.85 0.16
MAX 2026.00 1920.00 1382.60 842.50 519.00 220.56 53.50 130.50 482.00 870.00 1531.11 1907.02 8850.38
MIN 756.00 750.96 570.00 341.38 94.50 8.50 0.00 0.00 61.00 289.13 619.50 906.00 5977.50
NO YRS 81 84 84 82 80 84 87 80 82 78 81 79 52