ALTURAS RANGER STATION, CALIFORNIA

Monthly Total Growing Degree Days

(040161)

Base Temperature = 40 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
1931 0.00 z 0.00 z 0.00 z 0.00 z 340.50 j 564.11 b 890.22 a 777.00 341.90 a 121.93 a 36.00 0.00 b 2731.15
1932 0.00 0.00 19.63 a 71.50 246.45 a 575.00 764.00 746.00 592.24 a 224.00 80.17 a 0.00 3319.00
1933 0.00 0.00 a 24.50 179.00 221.50 629.00 914.50 821.00 427.50 373.00 63.00 18.60 a 3671.60
1934 32.03 a 64.62 b 303.80 a 372.22 c 528.03 a 581.50 894.50 890.00 579.50 225.50 31.50 6.50 4509.70
1935 1.00 22.50 21.50 173.00 381.82 a 649.00 758.50 764.87 e 394.50 i 215.21 e 5.56 c 3.74 b 2996.69
1936 0.00 a 6.21 a 88.02 c 269.40 e 443.54 e 632.68 b 891.25 a 785.91 d 507.78 c 287.94 e 50.17 a 0.00 b 3962.90
1937 0.00 m 0.00 b 23.50 p 114.00 458.50 613.50 889.50 741.50 591.00 266.00 56.50 12.00 3742.50
1938 20.00 0.50 9.50 192.50 390.50 654.50 821.50 677.00 531.00 191.00 8.50 22.00 3518.50
1939 8.50 0.00 96.00 272.50 434.50 524.50 813.00 779.50 500.50 222.50 38.00 32.50 3722.00
1940 29.00 29.50 117.00 202.00 532.00 720.50 734.70 a 795.00 486.50 306.00 34.00 2.77 c 3988.97
1941 0.00 6.00 127.50 170.50 399.50 489.60 e 801.00 694.50 379.50 176.00 133.00 32.00 3409.10
1942 3.62 a 8.00 20.50 113.50 269.00 514.50 799.50 741.50 605.50 307.00 28.00 4.00 3414.62
1943 1.00 4.48 c 50.50 231.00 283.00 377.59 a 764.00 586.00 609.50 234.00 44.50 4.00 3189.57
1944 0.00 7.00 33.50 96.00 327.00 387.00 734.00 624.50 492.50 308.00 25.00 6.00 3040.50
1945 8.00 8.50 22.00 151.50 367.50 527.00 838.50 724.00 435.50 379.00 40.00 14.50 3516.00
1946 5.50 5.50 47.00 250.50 399.50 516.00 800.50 804.00 453.50 125.50 28.50 5.00 3441.00
1947 0.50 19.50 114.18 a 223.50 530.50 495.50 708.50 682.50 519.50 294.50 26.00 4.00 3618.68
1948 14.00 5.70 a 12.50 79.00 284.50 551.50 677.50 654.00 457.00 258.00 13.50 0.00 3007.20
1949 0.00 0.00 24.28 a 233.57 b 423.00 563.00 770.00 694.00 573.50 195.50 172.50 b 3.00 3652.35
1950 8.55 b 37.00 48.50 162.50 386.00 553.00 869.00 807.55 a 574.44 c 338.00 120.50 45.00 3950.05
1951 1.00 22.00 50.00 276.50 357.50 635.50 788.50 794.50 608.00 178.54 d 39.50 f 5.68 a 3717.72
1952 0.00 2.23 c 17.00 226.15 d 436.14 b 496.73 d 882.00 766.22 a 608.79 a 342.50 f 28.00 4.17 e 3467.44
1953 10.00 i 16.00 g 42.92 e 108.00 f 200.39 c 406.61 b 642.50 f 490.00 j 665.00 c 261.29 c 114.00 2.50 j 1690.21
1954 0.00 b 40.38 b 25.12 b 250.56 c 491.87 a 513.00 801.00 632.50 466.07 b 268.00 147.00 2.00 3637.50
1955 0.00 b 3.50 47.00 39.00 j 350.00 622.50 698.00 819.50 567.50 227.50 i 41.54 d 31.52 a 3181.06
1956 1.00 0.00 78.00 i 223.50 420.00 576.50 874.00 695.00 537.50 277.00 55.50 1.03 a 3661.03
1957 0.00 d 23.00 94.00 141.50 368.00 668.00 772.50 677.50 631.00 180.00 9.00 2.00 3566.50
1958 0.00 61.50 11.00 154.50 529.50 588.50 869.00 895.50 572.50 377.00 112.00 53.00 4224.00
1959 36.50 2.00 86.00 257.50 298.50 675.50 887.00 743.00 440.00 297.50 39.50 8.50 3771.50
1960 3.00 6.50 139.50 a 163.50 283.50 723.50 923.50 705.00 603.50 302.50 34.00 13.00 3901.00
1961 15.50 36.00 50.00 204.00 328.08 a 757.00 840.00 858.50 456.00 302.50 39.50 1.00 3888.08
1962 0.00 0.50 37.00 275.50 322.50 598.50 792.00 732.50 603.00 289.50 128.50 49.00 3828.50
1963 0.00 138.50 47.00 77.50 485.00 547.50 669.00 699.50 604.00 313.00 70.50 5.50 3657.00
1964 7.00 0.00 36.50 127.00 304.00 464.50 801.00 710.00 460.00 346.00 38.00 29.00 3323.00
1965 9.00 18.00 36.50 202.50 317.00 521.50 565.50 f 718.00 445.50 348.48 b 76.80 e 0.00 c 2693.28
1966 1.50 0.00 121.50 240.50 537.00 562.50 718.88 b 854.00 571.73 d 266.27 c 70.00 i 17.50 g 3873.88
1967 0.00 c 10.50 38.50 8.57 b 391.50 589.50 886.00 933.00 655.50 252.00 135.00 0.00 3900.07
1968 0.00 57.00 108.50 164.00 370.50 630.00 914.00 657.50 547.50 294.00 52.50 7.50 3803.00
1969 5.50 0.50 66.00 157.50 513.50 643.00 823.00 740.00 571.50 104.00 48.00 13.00 3685.50
1970 27.00 30.00 33.50 34.00 407.50 625.00 814.00 749.00 427.00 190.00 56.50 1.50 3395.00
1971 15.00 19.00 23.00 111.00 265.00 441.50 809.00 864.00 387.00 194.50 15.00 0.00 3144.00
1972 0.00 15.50 123.00 104.50 365.50 606.00 804.50 771.00 409.50 211.50 j 5.19 d 7.00 3211.69
1973 12.00 1.00 19.00 120.50 432.50 553.00 835.00 713.00 a 461.50 180.66 b 50.50 7.50 q 3378.66
1974 17.57 a 9.00 49.00 86.50 287.50 621.00 714.00 728.00 564.50 0.00 z 62.78 c 3.50 k 3139.84
1975 0.00 b 1.50 10.00 16.00 281.00 503.00 788.50 636.50 575.50 218.00 27.22 c 3.50 3060.72
1976 5.50 2.50 55.50 99.00 381.00 450.50 785.33 d 578.50 543.50 112.00 o 94.00 0.00 2995.33
1977 0.00 27.50 14.50 186.50 136.00 698.50 768.50 815.00 463.00 281.50 35.50 21.00 3447.50
1978 11.00 11.00 139.00 106.50 228.50 507.50 743.50 730.00 399.50 327.00 28.00 2.07 a 3233.57
1979 0.00 9.00 69.50 123.50 349.00 546.11 c 771.50 674.00 571.00 226.50 g 6.00 18.37 d 3137.98
1980 9.96 c 31.07 a 9.00 n 176.00 304.50 407.50 782.50 676.00 502.00 294.00 80.50 15.00 3279.04
1981 19.50 31.11 a 24.50 171.00 330.87 e 606.43 b 787.00 812.00 557.00 180.50 99.00 32.03 a 3650.94
1982 0.00 22.50 12.00 70.00 319.82 a 531.50 713.00 763.00 427.50 183.50 0.50 4.00 3047.32
1983 2.50 28.00 41.00 69.00 320.50 479.00 631.00 796.00 505.50 277.00 71.50 4.00 3225.00
1984 0.00 3.00 61.50 95.00 343.00 450.50 877.50 767.00 490.00 144.50 19.50 0.00 3251.50
1985 0.00 1.50 10.00 225.50 318.50 681.50 896.50 672.00 368.50 166.50 18.00 0.00 3358.50
1986 37.00 64.50 137.50 147.50 345.00 703.39 b 722.50 851.00 353.00 225.50 28.50 2.50 3617.89
1987 0.00 15.00 36.00 253.50 474.82 a 661.00 685.50 775.50 561.50 392.00 90.50 31.00 3976.32
1988 2.50 30.50 58.00 201.50 306.00 588.00 925.00 821.00 508.50 379.00 58.50 1.00 3879.50
1989 0.00 1.50 79.00 229.50 297.50 615.50 736.00 683.00 494.50 198.50 19.50 6.00 3360.50
1990 7.00 4.00 74.50 274.00 286.50 513.50 864.50 783.00 562.00 235.50 29.00 0.00 3633.50
1991 0.00 34.00 8.50 88.50 214.50 450.00 756.50 792.50 610.00 350.00 88.50 1.00 3394.00
1992 7.00 30.50 80.00 243.00 544.00 699.00 773.50 796.00 526.00 257.00 42.50 0.00 3998.50
1993 0.00 0.00 118.50 109.50 391.00 451.00 574.00 701.00 522.50 270.00 9.00 3.00 3149.50
1994 5.00 1.00 101.00 177.00 443.50 573.00 920.00 753.00 569.50 171.50 5.50 0.00 3720.00
1995 19.50 83.50 50.50 102.50 338.50 496.00 778.00 724.50 589.50 220.00 131.50 46.50 3580.50
1996 8.00 67.50 69.75 a 188.50 353.50 633.50 928.00 790.50 474.50 270.50 68.50 28.50 3881.25
1997 20.50 7.50 111.50 159.50 494.00 563.00 780.00 741.50 531.50 191.00 65.50 0.00 3665.50
1998 20.50 2.50 78.00 130.50 224.50 520.00 875.50 830.00 625.00 182.00 17.50 3.50 3509.50
1999 2.00 12.50 27.26 b 147.41 a 324.50 529.50 743.00 726.00 551.50 288.30 a 125.69 a 0.00 3477.66
2000 5.50 7.50 33.58 a 231.11 c 393.24 d 673.50 759.50 750.89 d 483.50 207.04 c 11.50 0.00 b 3556.86
2001 0.00 b 5.50 107.00 142.78 c 515.00 600.00 808.50 814.00 560.50 309.50 54.83 a 2.50 3920.11
2002 12.00 20.50 51.00 226.50 381.50 653.50 950.50 746.50 554.00 188.50 46.00 20.00 3850.50
2003 55.50 9.00 99.50 74.00 412.76 d 690.00 939.00 780.34 b 589.50 381.96 c 10.80 e 0.00 z 4042.37
2004 5.50 0.50 158.00 200.00 381.50 628.50 872.00 802.50 463.33 c 231.00 21.00 4.00 g 3763.83
2005 2.38 e 3.00 56.00 113.65 d 348.50 466.50 668.50 i 797.00 405.58 d 125.00 k 12.00 h 16.00 2208.62
2006 3.50 f 3.65 e 5.17 a 137.14 b 438.00 701.38 a 539.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1285.34
Period of Record Statistics
MEAN 7.52 17.49 61.94 165.49 367.86 571.81 805.37 751.71 519.75 254.30 52.75 10.31 3591.13
S.D. 10.95 23.76 49.10 71.08 90.31 86.96 78.57 70.25 76.26 69.79 40.04 13.57 314.42
SKEW 2.06 2.52 1.91 0.13 0.08 -0.14 -0.28 -0.05 -0.39 0.08 1.01 1.56 0.23
MAX 55.50 138.50 303.80 372.22 544.00 757.00 950.50 933.00 665.00 392.00 172.50 53.00 4509.70
MIN 0.00 0.00 5.17 8.57 136.00 377.59 574.00 578.50 341.90 104.00 0.50 0.00 3007.20
NO YRS 72 74 72 73 75 76 72 74 74 68 72 69 56