TWIN LAKES, CALIFORNIA

Monthly Total Heating Degree Days

(049105)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200008
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 416.12 e 199.50 n 396.00 g 578.00 h 953.00 1355.00 2724.12
1949 1552.00 1255.00 1143.50 753.00 734.50 354.44 c 272.59 b 272.00 k 185.00 t 546.00 j 711.00 1153.00 7929.03
1950 1452.00 1110.50 1181.00 992.50 827.50 597.00 300.00 329.00 516.50 642.00 779.00 935.50 9662.50
1951 1242.50 1076.00 1119.00 876.00 773.50 476.50 293.50 349.00 f 363.33 c 754.50 954.00 1300.50 9229.33
1952 1446.50 1191.00 1323.50 841.50 660.50 604.50 236.50 304.00 365.50 477.40 a 1029.50 1223.47 a 9703.87
1953 1048.00 1048.50 1128.50 1011.00 997.00 667.00 250.21 c 386.47 a 346.55 a 733.50 885.50 1057.00 9559.23
1954 1189.50 887.00 1260.00 824.00 589.00 545.50 251.50 377.00 486.00 696.50 918.50 1249.50 9274.00
1955 1444.50 1197.50 1238.00 1189.00 884.50 592.24 a 351.50 f 237.00 g 452.40 e 616.00 980.19 d 1199.00 9793.33
1956 1247.50 1305.00 1168.00 1014.00 804.00 526.00 330.50 419.50 332.50 g 840.50 846.00 999.00 9500.00
1957 1386.00 951.00 1109.00 913.50 799.50 380.00 257.00 233.00 j 354.44 c 834.86 b 977.00 1044.50 9006.81
1958 1117.00 1003.00 1299.50 1031.00 662.00 539.50 315.50 210.50 165.00 q 584.57 c 554.00 j 726.00 h 6762.57
1959 1191.50 1192.50 1062.50 862.50 652.50 h 348.00 126.00 252.50 311.50 i 553.23 e 719.50 979.00 7287.23
1960 1281.50 1173.50 994.00 902.00 758.00 187.50 h 118.00 i 106.50 l 209.00 i 467.00 j 1018.20 e 1085.00 7212.20
1961 996.50 997.63 a 1135.00 876.50 612.00 h 237.00 g 122.00 l 169.00 i 264.00 l 728.50 967.00 1160.00 6861.13
1962 1156.00 1160.50 1266.87 a 768.00 857.00 473.00 243.00 g 318.50 333.50 633.00 836.00 930.50 8732.87
1963 1085.50 806.00 1159.50 1127.50 706.00 557.00 278.00 g 320.50 344.00 588.50 951.00 974.00 8619.50
1964 1175.50 1028.00 1180.58 a 955.50 816.00 539.50 204.27 c 267.50 438.62 a 508.00 0.00 z 1198.00 8311.47
1965 1139.00 1012.00 1127.50 952.50 884.00 608.00 356.50 388.02 a 414.50 h 540.00 960.50 1221.00 9189.02
1966 1244.65 a 1170.00 1000.00 781.00 572.90 e 453.89 c 215.00 i 182.26 b 257.00 i 398.50 l 205.50 u 0.00 z 5404.70
1967 1145.50 979.00 1228.50 710.00 m 344.50 p 554.00 252.50 223.00 393.50 622.00 799.50 1235.50 7433.00
1968 1145.00 953.00 1051.00 889.50 740.50 412.50 223.00 415.00 394.00 673.00 945.50 1263.00 9105.00
1969 1168.91 b 0.00 z 938.50 g 1003.50 590.50 558.00 286.00 244.00 365.00 809.50 821.50 1062.50 6909.41
1970 1155.50 961.50 1114.00 1126.50 670.50 472.50 222.50 198.50 463.50 732.00 898.00 1313.50 9328.50
1971 1108.50 1063.00 1154.00 986.50 856.50 539.00 290.00 219.50 500.50 822.57 b 974.50 1351.00 9865.57
1972 1211.50 1026.00 944.50 971.00 713.50 431.50 194.00 222.00 453.00 786.00 994.50 1204.50 9152.00
1973 1230.50 0.00 z 842.00 k 0.00 z 0.00 z 336.67 c 267.63 a 264.50 440.00 664.50 1031.50 1038.00 5273.30
1974 1212.00 1023.00 1026.00 969.50 713.50 364.50 297.00 0.00 z 265.50 647.90 a 867.50 1163.50 8549.90
1975 1093.50 1063.50 1179.03 a 1214.00 731.00 509.50 252.50 356.00 298.50 801.00 951.00 957.38 a 9406.92
1976 1039.50 1106.30 b 1118.50 995.50 593.50 459.00 239.73 a 436.00 417.93 a 617.50 721.00 969.50 8713.96
1977 1131.50 912.50 1255.00 764.48 a 954.00 309.50 222.00 163.50 411.50 581.50 850.50 1034.50 8590.48
1978 1155.50 1033.50 920.00 994.50 740.50 471.00 250.07 a 239.00 487.50 514.50 995.50 1272.00 9073.57
1979 1315.36 b 1117.50 1049.00 908.04 b 650.50 401.00 239.73 a 315.50 251.00 647.00 935.50 581.00 j 7830.13
1980 1081.50 955.96 a 1181.00 861.00 805.50 591.50 245.50 295.00 402.00 615.50 829.14 a 822.00 8685.60
1981 947.00 923.00 1000.50 459.50 j 698.00 199.00 p 154.45 c 110.22 d 212.00 i 285.50 s 963.62 a 1045.50 5842.29
1982 1236.50 968.00 1139.00 937.50 676.50 525.50 289.50 140.00 j 500.00 767.50 1114.50 1173.00 9327.50
1983 1097.50 1019.00 1091.00 1027.50 812.56 e 525.54 b 227.50 m 300.00 398.00 626.00 1116.00 e 1140.50 9153.59
1984 1059.00 1051.00 966.50 954.50 548.50 461.25 b 89.50 f 51.00 t 216.00 k 868.53 b 1058.00 1246.00 8213.29
1985 1146.50 1060.50 1158.00 741.50 638.48 e 235.20 e 144.50 156.00 h 544.29 b 735.96 d 1064.00 1067.50 8536.43
1986 947.50 1001.50 931.00 891.00 687.00 270.00 311.00 155.00 623.50 704.00 811.55 a 1022.50 8355.55
1987 1253.50 1085.00 1123.50 685.00 600.50 320.00 330.15 a 167.50 311.50 538.50 940.00 1278.50 8633.65
1988 1167.00 960.50 992.50 847.00 728.00 369.00 123.00 168.50 337.00 413.50 1021.00 1206.00 8333.00
1989 1182.00 1124.50 1035.00 768.00 673.50 387.50 186.50 203.00 n 397.50 755.50 794.46 b 933.00 8237.46
1990 1132.53 a 1193.00 1003.50 765.00 744.50 402.00 201.00 115.50 m 339.00 530.00 842.50 1258.00 8411.03
1991 1069.00 812.50 1310.50 1025.00 881.50 508.50 116.50 k 252.28 b 186.00 k 466.00 i 266.00 r 1057.50 6916.78
1992 1050.00 999.50 1012.50 692.00 475.50 461.50 143.00 o 185.00 147.00 n 610.00 914.00 1255.50 7655.50
1993 1278.50 1160.50 967.50 915.50 705.77 a 546.92 d 369.50 317.50 349.00 623.50 877.00 1138.50 9249.69
1994 1042.00 1150.50 852.00 851.00 661.50 382.50 103.00 132.50 279.00 j 716.00 1244.00 1182.00 8317.00
1995 1197.00 867.50 1127.50 996.00 835.00 583.50 241.50 218.50 298.50 501.50 669.00 1102.00 8637.50
1996 1128.00 1061.50 1072.00 924.50 708.00 474.00 197.50 j 362.50 453.50 731.50 938.00 1096.50 8950.00
1997 1194.00 984.00 895.50 870.50 404.50 h 0.00 z 429.00 376.00 309.50 667.50 903.00 1097.00 7726.00
1998 1191.50 1036.50 1019.00 256.50 t 678.50 343.00 97.00 0.00 z 356.50 544.00 i 1008.00 e 1164.80 d 6894.80
1999 1052.97 a 1026.50 958.50 885.00 c 437.00 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 804.50 0.00 z 4727.47
2000 1106.70 a 610.00 m 427.50 o 0.00 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 1106.70
Period of Record Statistics
MEAN 1174.40 1045.80 1097.39 917.69 729.76 466.70 251.81 272.78 398.97 660.34 920.50 1129.48 9073.92
S.D. 123.62 107.83 113.89 119.93 108.85 101.01 76.66 87.81 81.80 108.37 114.42 125.32 474.18
SKEW 0.90 0.06 0.01 0.26 0.19 -0.27 0.03 0.10 0.51 -0.06 0.10 -0.24 -0.02
MAX 1552.00 1305.00 1323.50 1214.00 997.00 667.00 429.00 436.00 623.50 868.53 1244.00 1355.00 9865.57
MIN 947.00 806.00 852.00 685.00 475.50 235.20 97.00 110.22 251.00 413.50 669.00 822.00 8333.00
NO YRS 52 49 49 47 45 46 40 37 37 44 48 48 18