CHESTER, CALIFORNIA

Monthly Total Heating Degree Days

(041700)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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 92.00 u 211.00 616.50 850.00 971.50 2649.00
1958 1032.50 796.00 977.00 700.00 361.50 260.50 57.50 18.50 213.50 430.50 759.00 851.00 6457.50
1959 942.50 915.50 759.50 520.56 c 528.00 182.00 48.50 130.20 a 288.75 b 424.70 a 740.56 c 1088.00 6568.76
1960 1122.89 d 936.70 d 741.33 b 671.54 d 540.43 a 73.00 k 34.32 c 112.24 b 171.21 a 394.50 f 876.00 1025.14 b 6231.80
1961 939.09 b 776.22 a 850.50 618.50 541.35 d 131.67 c 67.88 b 86.28 a 333.10 a 536.09 b 839.50 1133.50 6853.68
1962 1150.62 a 972.00 971.50 574.14 a 499.00 200.50 57.19 b 113.67 a 199.66 a 499.21 b 736.61 b 915.03 b 6889.11
1963 1044.59 c 624.75 d 876.02 b 826.73 d 396.50 186.50 f 149.00 g 153.97 a 185.50 463.00 807.69 d 996.17 e 6374.92
1964 1093.27 a 569.00 k 893.83 a 645.58 d 520.00 278.79 a 80.60 a 70.00 h 228.00 g 433.45 c 966.96 b 959.45 a 5871.93
1965 1035.40 a 864.00 781.00 643.20 e 533.00 239.50 97.81 b 148.28 a 375.52 a 463.93 b 786.72 a 1157.73 e 7126.10
1966 1144.42 a 996.07 a 854.05 a 555.00 e 329.63 a 252.32 b 178.77 a 83.18 a 193.89 c 487.50 793.00 1051.50 6919.33
1967 1058.00 867.50 953.25 a 931.00 452.00 243.00 31.00 10.50 119.50 480.50 691.03 a 1192.00 7029.28
1968 1168.00 820.00 824.00 629.50 464.48 a 179.50 31.50 186.00 226.55 a 517.50 807.00 1174.50 7028.54
1969 1179.50 1031.50 985.50 727.76 a 307.50 199.50 49.60 a 68.72 a 160.50 618.00 756.50 949.50 7034.08
1970 1005.00 774.50 786.50 751.50 400.50 181.00 29.50 67.00 246.50 552.00 755.00 1110.50 6659.50
1971 1080.50 916.50 924.50 689.00 493.00 273.62 a 53.00 41.50 276.00 601.50 814.50 1213.00 7376.62
1972 1190.50 897.00 686.00 675.50 405.00 136.00 59.50 87.83 d 294.50 529.00 846.00 1204.50 7011.33
1973 1196.50 853.50 941.62 c 619.00 300.50 160.18 b 33.38 e 20.00 p 218.50 528.00 869.00 965.50 6685.69
1974 1051.50 874.46 b 814.78 a 678.50 423.50 142.50 91.50 48.00 131.00 454.00 757.50 992.00 6459.25
1975 1080.00 900.50 938.00 872.00 417.00 218.00 76.39 c 132.86 c 125.00 587.50 867.50 951.50 7166.25
1976 981.00 849.50 843.50 699.50 388.53 a 296.38 a 61.00 219.50 215.50 477.50 673.00 1033.00 6737.91
1977 1146.50 798.00 929.50 542.50 617.00 104.00 78.02 a 58.50 291.50 471.50 799.50 929.50 6766.02
1978 956.00 826.00 691.00 697.00 393.50 g 245.17 a 78.50 163.00 355.50 434.50 887.50 1175.50 6509.67
1979 1129.00 899.50 783.50 636.00 381.00 225.00 a 109.50 166.00 192.00 472.50 835.00 951.00 6780.00
1980 972.00 777.50 854.00 584.00 505.00 354.00 103.00 124.00 a 237.00 490.50 751.50 976.50 6729.00
1981 939.00 822.00 804.97 a 540.00 412.50 140.00 87.00 78.00 201.50 612.77 a 733.50 896.00 6267.23
1982 1158.00 846.00 883.50 758.00 403.00 256.00 116.50 117.50 313.50 582.00 906.50 1064.73 e 7405.23
1983 994.50 821.00 832.00 774.50 456.50 260.00 188.00 104.50 223.50 472.50 815.50 944.50 6887.00
1984 992.50 891.00 711.00 682.00 339.50 256.50 13.00 41.00 180.00 621.00 872.50 1042.00 6642.00
1985 1004.00 866.50 906.50 515.00 433.50 95.50 22.50 90.00 338.50 517.00 939.00 1047.00 6775.00
1986 891.50 767.00 663.50 602.00 413.00 115.50 74.50 12.50 j 400.00 515.00 708.00 953.00 6103.00
1987 1140.50 867.50 837.00 466.00 301.50 116.00 123.00 38.50 126.50 314.50 734.50 1076.00 6141.50
1988 1098.50 826.00 735.00 571.00 480.50 216.00 14.47 a 27.50 195.50 281.00 772.50 1040.50 6258.47
1989 1157.50 1009.00 802.00 509.50 450.50 120.50 70.00 109.00 234.00 542.50 751.00 946.00 6701.50
1990 1061.50 1037.00 782.00 471.00 485.00 231.00 52.50 115.50 170.00 471.50 860.50 1291.50 7029.00
1991 1035.00 701.00 976.50 670.50 547.50 257.00 18.50 57.00 92.00 392.00 742.50 1050.50 6540.00
1992 1066.00 819.50 734.00 516.50 199.50 171.50 69.50 35.00 174.50 428.00 820.50 1185.50 6220.00
1993 1247.00 986.00 790.50 683.00 410.50 251.00 87.50 111.50 215.50 459.00 870.50 1071.50 7183.50
1994 1007.00 934.50 727.50 591.50 364.50 195.00 3.10 a 46.00 174.50 551.50 1072.00 1148.50 6815.60
1995 1019.50 806.50 922.00 745.50 497.00 290.00 70.00 97.50 143.00 439.50 648.00 951.00 6629.50
1996 971.50 853.00 763.50 616.00 458.50 158.50 16.50 36.50 241.00 523.50 763.00 955.00 6356.50
1997 995.50 840.50 701.50 614.50 277.50 194.00 47.65 d 79.50 292.00 672.00 851.50 1189.00 6755.15
1998 1080.00 1018.50 968.50 808.50 752.00 360.00 101.50 103.00 264.00 686.50 967.50 1222.50 8332.50
1999 1095.50 1025.23 b 1004.00 805.00 551.50 318.00 110.00 104.76 b 131.50 431.50 728.50 990.50 7295.99
2000 1014.50 884.00 782.00 493.85 d 415.50 122.50 78.03 b 65.50 258.50 558.50 913.50 965.00 6551.38
2001 1149.98 e 963.50 729.50 711.00 222.50 180.00 52.59 c 37.89 d 154.04 d 391.08 e 746.25 b 1078.11 d 6416.44
2002 1091.50 869.50 897.50 570.50 466.00 143.00 7.50 81.00 155.00 439.50 505.00 i 982.50 5703.50
2003 417.00 p 590.00 h 751.00 640.50 f 447.50 71.00 m 26.00 l 73.00 119.00 343.50 888.50 1022.00 3644.50
2004 1083.50 944.50 655.50 569.00 410.00 124.00 22.50 45.50 194.00 531.50 819.50 997.00 6396.50
2005 1118.50 794.50 769.50 668.00 393.50 0.00 z 6.50 24.50 268.00 490.00 556.00 g 972.00 5505.00
2006 1011.00 854.00 1075.04 c 694.82 b 352.76 b 108.62 a 12.00 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4096.24
Period of Record Statistics
MEAN 1065.06 872.66 834.00 648.65 432.21 204.07 64.37 87.54 219.19 496.60 812.59 1041.82 6799.80
S.D. 80.57 87.44 101.35 104.77 99.05 68.54 40.97 47.32 72.25 84.66 83.87 101.54 408.37
SKEW 0.05 -0.09 0.25 0.43 0.30 0.30 0.89 0.60 0.54 -0.06 0.61 0.53 1.25
MAX 1247.00 1037.00 1075.04 931.00 752.00 360.00 188.00 219.50 400.00 686.50 1072.00 1291.50 8332.50
MIN 891.50 624.75 655.50 466.00 199.50 95.50 3.10 10.50 92.00 281.00 648.00 851.00 6141.50
NO YRS 48 47 49 48 48 45 46 45 48 48 47 49 39