ALTURAS RANGER STATION, CALIFORNIA

Monthly Total Heating Degree Days

(040161)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1905 0.00 z 0.00 z 0.00 z 0.00 z 454.31 b 180.50 14.50 39.50 230.00 617.50 859.00 1198.00 3593.31
1906 1090.00 777.50 0.00 z 539.50 465.00 254.00 0.00 34.00 224.00 512.50 861.50 972.00 5730.00
1907 1225.50 623.50 912.50 493.50 386.00 276.00 50.00 104.50 263.00 341.50 792.50 915.00 6383.50
1908 939.50 845.00 854.50 527.00 553.00 270.00 7.50 104.50 226.00 592.50 741.00 1168.50 6829.00
1909 1029.00 865.00 832.00 621.00 478.00 150.50 93.00 52.50 226.00 492.50 750.00 1137.50 6727.00
1910 1332.50 1009.00 622.00 483.50 307.50 176.00 22.00 80.50 276.50 484.00 772.50 926.00 6492.00
1911 1188.00 1177.50 761.50 636.50 517.50 164.00 20.50 69.00 394.50 560.50 827.50 1213.00 7530.00
1912 1022.00 824.00 916.00 720.00 430.50 188.00 83.00 92.00 279.50 653.00 716.50 1076.50 7001.00
1913 1345.50 1191.50 919.50 589.00 340.50 196.00 46.50 45.00 171.50 499.00 751.50 1060.00 7155.50
1914 957.00 797.00 645.50 514.00 274.00 201.50 0.50 21.00 250.50 484.00 744.50 1233.00 6122.50
1915 1035.00 808.50 704.50 479.00 463.50 174.00 54.00 4.13 a 238.00 474.50 863.00 968.50 6266.63
1916 1319.00 750.00 694.50 535.50 524.00 218.00 83.00 79.50 199.00 580.00 907.00 1237.50 7127.00
1917 1673.00 1130.50 1274.00 694.00 485.00 180.50 4.50 5.00 188.50 411.00 672.50 866.50 7585.00
1918 969.50 881.50 774.50 624.50 429.00 43.00 32.50 111.00 145.50 451.00 850.00 1193.50 6505.50
1919 1092.00 961.50 901.50 496.00 287.50 185.50 23.50 40.50 252.50 684.00 818.50 0.00 z 5743.00
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 0.00 z 0.00 z 0.00 z 0.00 z 185.50 j 192.32 b 19.63 a 46.00 412.24 a 678.38 a 1107.00 1105.84 b 3561.42
1932 1348.00 1285.50 911.40 a 750.50 532.68 a 212.00 54.50 100.00 157.76 a 567.50 706.03 a 1320.00 7945.88
1933 1338.50 1323.26 a 850.50 626.50 581.00 154.00 12.50 51.50 322.50 406.50 718.00 908.30 a 7293.06
1934 865.42 a 684.92 b 471.20 a 377.78 c 249.03 a 183.50 19.50 9.50 216.00 578.00 888.50 991.50 5534.85
1935 1153.00 805.50 947.50 587.50 393.18 a 115.00 87.00 53.06 e 130.50 i 611.65 e 930.56 c 1010.71 b 6694.66
1936 1064.85 a 904.18 a 769.46 c 525.00 e 331.46 e 146.79 b 18.60 a 49.94 d 242.22 c 498.98 e 819.31 a 1093.02 b 6463.81
1937 983.00 m 1092.00 b 372.00 p 671.50 316.50 161.50 8.00 82.50 165.00 513.00 721.00 867.50 4598.50
1938 874.50 958.50 954.00 571.00 387.50 104.00 43.50 102.00 219.00 589.00 959.50 982.50 6745.00
1939 1048.50 1113.50 771.50 479.50 340.50 226.00 43.00 55.50 251.00 578.50 767.00 867.00 6541.50
1940 908.50 781.00 699.00 554.50 243.00 93.00 58.38 a 34.50 266.00 469.00 821.00 973.18 c 5901.06
1941 981.00 802.00 666.50 592.00 375.50 262.20 e 39.50 112.00 370.50 604.50 688.00 934.50 6428.20
1942 1158.37 a 893.50 881.50 653.00 511.00 239.50 58.50 83.50 153.00 478.00 859.50 984.50 6953.87
1943 1130.00 888.72 c 812.00 520.00 507.50 372.41 a 51.50 193.00 141.50 573.50 770.50 986.00 6946.63
1944 1238.50 871.50 914.00 702.00 449.00 363.50 64.50 157.00 263.50 467.00 871.50 957.50 7319.50
1945 1002.00 851.50 916.00 660.50 407.50 243.00 16.50 76.50 316.00 399.50 840.00 1050.50 6779.50
1946 1117.00 938.50 802.50 514.00 375.50 235.50 57.50 41.50 297.50 687.50 850.50 1016.00 6933.50
1947 1218.00 722.00 701.12 a 541.00 246.00 258.50 84.50 107.00 235.00 484.50 902.00 1014.50 6514.12
1948 973.00 1002.05 a 955.00 732.50 500.50 209.00 125.50 126.00 295.00 536.00 918.50 1391.00 7764.05
1949 1749.00 1165.50 835.45 a 525.54 b 352.00 195.00 57.50 106.50 188.00 619.00 585.00 b 1147.50 7525.99
1950 1274.21 b 844.50 895.00 610.00 423.50 218.50 22.00 40.82 a 207.22 c 443.00 676.50 806.50 6461.75
1951 1069.50 881.50 894.50 481.00 418.50 153.00 37.50 57.50 153.00 602.78 d 626.50 f 1168.70 a 5917.48
1952 1277.00 1045.67 c 1018.50 534.81 d 338.86 b 266.54 d 20.50 61.48 a 154.66 a 282.50 f 902.00 982.46 e 6602.48
1953 644.50 i 605.00 g 860.85 e 537.50 f 584.57 c 343.39 b 26.50 f 57.50 j 117.78 c 516.48 c 695.50 691.00 j 3118.57
1954 1049.72 b 719.38 b 842.88 b 506.67 c 296.57 a 274.00 38.00 158.50 283.93 b 515.00 635.00 1081.00 6400.65
1955 1351.71 b 1019.00 878.00 527.00 j 425.50 176.00 131.50 24.50 240.00 329.50 i 890.77 d 941.88 a 6078.86
1956 1023.00 1138.00 524.00 i 547.50 357.00 195.50 35.00 92.50 215.00 533.00 800.00 1027.13 a 5963.63
1957 1314.63 d 847.50 726.50 621.00 407.00 128.00 36.50 103.00 124.50 596.50 880.00 929.00 6714.13
1958 939.50 691.50 912.00 631.50 246.50 187.00 34.50 9.50 188.50 407.00 719.00 809.00 5775.50
1959 911.50 926.50 737.50 494.50 479.50 133.00 49.00 81.00 314.50 481.50 786.00 1120.50 6515.00
1960 1186.50 927.00 707.32 a 621.00 493.50 57.00 10.00 125.50 149.50 485.00 839.00 911.50 6512.82
1961 896.00 735.50 821.00 579.50 447.43 a 88.00 32.00 27.50 294.00 495.00 840.00 1044.00 6299.93
1962 1282.00 926.50 891.00 482.50 461.00 165.00 54.00 80.00 156.00 492.00 693.50 845.00 6528.50
1963 1100.50 567.50 823.00 778.00 308.50 228.00 118.50 112.50 169.00 471.50 752.00 971.50 6400.50
1964 1117.00 1017.00 907.00 655.00 504.50 296.50 47.00 97.50 290.00 430.00 881.00 985.50 7228.00
1965 1058.50 816.50 807.50 577.00 465.50 240.00 89.50 f 97.00 309.00 436.67 b 745.80 e 1092.75 c 6646.22
1966 1099.00 968.50 782.00 531.50 238.50 212.00 89.79 b 52.00 187.50 d 518.14 c 542.00 i 689.50 g 4678.94
1967 1065.62 c 803.50 863.50 853.93 b 393.00 196.50 8.00 10.00 104.50 532.00 688.00 1346.50 6865.05
1968 1221.50 750.50 722.50 631.00 410.00 162.00 17.50 167.00 209.50 490.50 827.50 1129.50 6739.00
1969 1115.00 969.50 848.50 614.00 265.00 134.50 25.00 70.50 189.50 695.00 777.00 984.50 6688.00
1970 1023.00 761.00 843.50 825.00 378.50 186.50 36.50 51.50 326.00 624.00 755.50 1185.50 6996.50
1971 1079.50 861.00 973.50 681.00 524.00 313.00 84.00 37.50 365.50 704.50 901.00 1191.00 7715.50
1972 1232.00 925.00 731.00 714.50 416.50 166.50 58.00 89.00 350.00 329.00 j 910.96 d 1335.50 6928.96
1973 1194.50 861.50 939.50 684.50 346.00 220.50 50.00 112.12 a 288.50 623.21 b 863.00 424.50 q 6183.32
1974 1223.47 a 980.50 870.50 755.50 509.00 146.50 123.50 88.00 186.00 0.00 z 778.33 c 631.50 k 5661.30
1975 1181.21 b 992.50 949.00 918.50 512.00 247.50 78.50 150.00 188.50 622.00 948.89 c 988.50 7777.10
1976 1020.00 917.00 984.50 711.50 395.00 307.50 57.41 d 201.00 215.50 295.00 o 735.00 1118.00 6662.41
1977 1562.00 933.50 997.00 582.00 671.50 115.00 64.00 79.50 293.50 503.50 871.50 983.50 7656.50
1978 909.00 843.00 688.50 703.00 550.00 249.00 97.00 140.00 353.00 449.50 986.00 1291.67 a 7259.67
1979 1251.00 943.00 798.50 684.50 435.00 219.44 c 88.00 151.50 183.00 380.00 g 936.00 963.87 d 6653.81
1980 967.09 c 771.09 a 470.00 n 617.50 470.50 347.50 76.50 113.50 250.50 502.00 795.50 982.50 5894.18
1981 913.50 892.37 a 843.50 618.00 446.52 e 172.50 b 60.00 44.50 214.50 616.00 736.00 910.88 a 6468.27
1982 1245.50 969.00 911.00 807.00 458.28 a 238.50 106.50 74.00 331.00 622.00 961.00 1091.50 7815.28
1983 968.50 768.50 810.00 777.50 484.00 271.00 171.00 59.50 244.50 503.00 850.50 1046.50 6954.50
1984 1034.00 910.00 774.00 728.50 444.00 307.00 13.50 44.00 273.50 720.50 917.00 1166.50 7332.50
1985 1142.50 1018.50 980.50 553.00 460.50 123.00 19.50 133.00 383.00 642.50 1144.00 1142.00 7742.00
1986 811.00 747.00 678.50 636.50 463.50 106.61 b 89.50 17.00 416.50 553.00 812.00 1025.00 6356.11
1987 1126.00 846.00 825.00 519.50 305.87 a 150.50 129.50 55.00 202.00 383.00 781.00 1177.00 6500.37
1988 1229.50 881.50 827.50 566.50 492.50 225.50 16.00 40.00 272.50 396.00 861.00 1153.00 6961.50
1989 1407.50 1215.50 783.50 546.00 482.00 139.00 81.00 118.00 256.00 617.50 851.00 1056.50 7553.50
1990 1045.00 1035.00 782.00 480.50 489.00 253.00 52.00 91.00 191.50 555.00 910.50 1405.50 7290.00
1991 1146.00 700.50 941.00 707.50 574.50 303.00 74.00 31.50 154.50 477.50 763.00 1068.50 6941.50
1992 997.00 779.50 731.50 517.00 241.00 120.50 76.50 67.00 224.00 520.50 839.50 1306.50 6420.50
1993 1331.00 1019.50 682.50 672.50 384.00 306.50 205.50 122.50 242.50 506.50 998.00 1114.00 7585.00
1994 986.00 966.50 727.00 584.00 331.50 193.50 15.50 56.00 181.50 626.50 1121.50 1175.00 6964.50
1995 948.00 712.00 817.50 702.50 436.50 271.50 42.50 89.50 163.50 562.00 664.50 901.00 6311.00
1996 992.50 822.50 773.97 a 581.00 421.50 130.00 22.50 64.50 275.50 546.50 762.50 948.50 6341.47
1997 1037.00 859.50 721.00 637.50 283.50 195.50 48.00 81.50 221.50 599.00 746.00 1145.00 6575.00
1998 906.50 866.00 803.00 666.50 550.50 230.00 15.50 38.50 176.50 606.50 873.50 1186.00 6919.00
1999 1047.00 918.00 884.03 b 667.24 a 464.50 231.50 75.00 83.00 199.50 491.35 a 672.41 a 1080.50 6814.04
2000 989.50 798.50 799.28 a 519.44 c 386.93 d 123.50 64.00 60.85 d 267.00 593.98 c 969.00 998.41 b 6570.40
2001 1077.52 b 937.50 729.00 705.56 c 262.00 171.00 44.50 29.50 190.00 472.00 819.83 a 993.00 6431.40
2002 1083.50 790.00 868.00 542.50 395.50 131.00 2.00 86.00 201.50 625.00 792.50 938.50 6456.00
2003 752.50 904.50 730.00 736.50 373.72 d 104.00 22.00 53.45 b 176.50 394.70 c 922.80 e 0.00 z 5170.67
2004 1002.50 912.00 655.00 570.00 393.50 132.00 17.50 49.50 286.67 c 595.00 895.00 833.50 g 5508.67
2005 1055.79 e 822.00 780.50 667.50 d 426.50 288.00 1.50 i 33.50 346.15 d 385.00 k 645.00 h 1054.50 5474.44
2006 828.00 f 906.35 e 966.50 616.00 352.00 108.00 10.50 97.00 66.00 v 0.00 z 317.50 q 1112.42 e 4168.77
2007 1226.29 e 667.00 f 763.78 b 471.00 f 285.50 i 196.00 g 33.50 h 49.50 m 209.50 k 732.52 d 686.00 g 858.00 h 2722.58
2008 1063.50 f 838.00 h 0.00 z 751.15 d 286.50 i 138.50 h 1.50 h 0.00 z 99.00 i 375.50 g 4.50 z 802.00 j 751.15
2009 680.00 k 565.00 j 569.00 j 509.50 g 206.00 n 117.00 f 31.00 h 32.00 l 96.50 i 423.00 j 485.50 k 444.00 u 0.00
2010 403.00 q 583.00 h 669.00 h 557.00 h 399.00 k 184.50 h 4.00 j 41.00 i 160.50 i 320.50 k 594.00 j 635.00 j 0.00
2011 692.00 k 682.50 h 640.00 h 532.00 i 384.50 i 189.00 h 20.50 p 9.00 h 69.00 h 389.00 j 570.50 i 747.00 j 0.00
2012 646.50 k 620.00 i 618.50 i 408.50 i 269.00 i 163.50 i 8.50 j 28.00 h 66.00 k 479.47 a 738.00 1095.85 a 2313.32
2013 1350.64 b 907.50 794.50 22.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 57.00 z 3052.64
Period of Record Statistics
MEAN 1116.28 899.06 824.93 616.39 416.34 200.26 51.69 76.35 238.50 538.64 824.58 1062.07 6840.49
S.D. 175.82 140.99 111.39 99.47 92.60 69.25 38.83 42.16 70.09 85.62 104.11 132.66 527.13
SKEW 0.96 0.63 0.35 0.45 -0.08 0.27 1.27 0.62 0.52 0.12 0.54 0.47 0.19
MAX 1749.00 1323.26 1274.00 918.50 671.50 372.41 205.50 201.00 416.50 732.52 1144.00 1405.50 7945.88
MIN 752.50 567.50 471.20 377.78 238.50 43.00 0.00 4.13 104.50 341.50 585.00 806.50 5534.85
NO YRS 88 89 87 88 90 91 88 90 89 85 88 85 68