PASADENA, CALIFORNIA

Monthly Total Growing Degree Days

(046719)

Base Temperature = 50 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
1893 208.50 115.63 a 94.00 224.00 342.50 461.50 0.00 z 646.50 413.00 304.50 149.00 164.00 3123.13
1894 63.50 51.50 0.00 z 0.00 z 0.00 z 0.00 z 650.50 685.50 616.50 471.00 340.50 81.00 2960.00
1895 53.00 0.00 z 160.50 254.00 0.00 z 0.00 z 593.00 614.50 578.00 0.00 z 0.00 z 0.00 z 2253.00
1896 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
1897 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
1898 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
1899 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
1900 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
1901 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
1902 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
1903 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
1904 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
1905 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
1906 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
1907 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
1908 0.00 z 0.00 z 0.00 z 0.00 z 346.37 e 455.50 728.50 717.00 627.00 395.00 232.50 107.00 3608.87
1909 105.00 56.00 104.50 294.50 334.00 534.00 653.50 741.00 594.00 440.50 212.50 71.50 4141.00
1910 85.00 95.50 258.33 a 385.00 477.50 498.50 736.50 670.00 657.00 523.00 234.50 187.50 4808.33
1911 119.00 25.00 207.50 205.50 335.00 434.50 654.50 618.00 467.00 356.50 259.00 81.50 3763.00
1912 174.50 191.50 54.00 148.50 376.50 484.50 605.00 562.50 508.00 320.00 310.00 63.00 3798.00
1913 83.00 80.50 163.50 264.50 355.50 455.50 606.00 662.50 627.50 397.00 202.00 68.00 3965.50
1914 81.50 146.00 308.00 314.00 296.00 463.00 611.50 704.00 614.00 567.50 432.50 30.00 4568.00
1915 77.00 64.50 265.50 247.50 306.00 534.50 645.50 722.50 496.00 381.00 222.00 135.00 4097.00
1916 22.00 220.50 296.57 a 297.50 298.00 438.50 633.95 a 618.50 510.50 237.50 147.50 34.00 3755.02
1917 22.00 67.50 125.50 151.50 195.50 580.50 763.00 655.50 654.00 520.50 288.00 239.50 4263.00
1918 82.00 71.00 174.00 278.00 284.50 648.50 665.50 687.00 630.00 561.50 170.00 86.50 4338.50
1919 146.00 31.00 76.50 262.00 318.00 576.00 734.50 714.00 590.69 a 323.00 216.00 123.50 4111.19
1920 109.00 109.50 113.50 211.50 385.50 506.50 740.50 734.50 562.50 317.00 177.50 60.00 4027.50
1921 60.00 126.00 216.00 218.00 252.50 511.00 736.00 677.00 570.00 465.50 288.50 197.00 4317.50
1922 46.50 55.00 99.20 a 169.00 401.50 570.50 687.50 766.00 723.00 404.00 159.00 141.00 4222.20
1923 157.58 a 147.50 243.87 a 209.00 433.00 412.00 652.00 666.50 631.50 434.00 354.00 142.00 4482.95
1924 120.00 256.50 105.00 248.50 453.00 582.93 a 687.00 670.50 683.50 368.00 363.10 a 129.00 4667.03
1925 137.50 163.00 244.00 261.00 392.15 a 572.50 784.50 694.50 593.50 421.00 286.50 296.50 4846.65
1926 173.50 231.50 329.50 375.00 473.00 368.50 l 690.35 e 732.50 553.93 b 548.38 b 443.28 a 107.39 c 4658.32
1927 130.50 116.00 167.50 263.00 431.50 516.72 a 795.00 734.00 590.50 436.00 f 376.50 98.50 4219.72
1928 241.00 186.00 262.00 354.00 471.50 502.50 696.00 711.00 728.00 421.00 281.50 152.00 5006.50
1929 90.50 77.00 189.50 185.50 466.00 561.00 768.50 883.50 636.50 602.50 371.90 a 308.00 5140.40
1930 110.50 230.00 244.50 358.00 318.50 534.50 756.00 775.00 524.00 498.50 368.00 156.00 4873.50
1931 175.50 188.50 384.50 436.00 538.50 580.00 887.50 835.00 634.00 504.00 195.50 50.00 5409.00
1932 51.00 131.00 301.50 327.50 407.00 501.00 642.50 670.50 583.50 458.00 434.00 76.00 4583.50
1933 98.00 78.00 227.33 d 236.00 296.00 496.50 708.00 716.00 479.00 518.45 b 397.50 151.00 4401.78
1934 200.00 171.00 447.00 421.50 545.50 452.50 771.50 739.50 690.50 491.50 255.00 154.00 5339.50
1935 115.50 179.50 103.00 271.50 346.50 549.00 693.00 793.00 637.50 452.00 212.00 156.00 4508.50
1936 158.50 111.50 248.50 303.50 469.50 605.00 801.50 775.00 637.50 498.00 403.00 169.00 5180.50
1937 0.50 75.00 182.00 307.00 426.00 545.50 743.50 745.50 712.00 537.00 288.50 259.00 4821.50
1938 217.00 105.50 149.50 286.55 a 417.00 499.00 690.00 796.50 759.50 472.50 234.50 268.50 4896.05
1939 104.50 53.00 149.50 361.50 389.50 526.00 704.00 760.50 767.00 538.00 383.28 a 301.00 5037.78
1940 173.50 137.50 h 282.00 339.50 502.50 523.50 695.00 692.00 584.50 530.50 287.50 250.50 4861.00
1941 152.50 189.00 250.50 218.50 515.00 477.00 704.00 664.00 506.00 434.00 354.00 137.00 4601.50
1942 179.50 89.50 212.35 a 247.00 377.50 494.00 741.00 686.50 552.50 488.00 312.50 184.00 4564.35
1943 147.50 205.00 212.00 315.50 461.00 476.00 677.50 697.50 685.00 518.50 344.00 146.00 4885.50
1944 134.50 62.50 213.00 230.00 272.00 j 397.50 565.00 725.50 618.50 453.50 198.50 213.50 3812.00
1945 133.50 142.00 120.00 247.00 359.50 446.00 712.50 777.00 714.50 519.00 279.00 163.50 4613.50
1946 159.50 88.00 209.50 358.00 331.50 581.50 747.00 534.50 i 735.50 418.50 215.00 119.50 f 3844.00
1947 127.00 248.50 292.20 d 356.50 438.50 515.00 743.00 690.50 712.00 490.50 190.00 145.00 4948.70
1948 201.00 104.00 101.00 284.50 371.50 467.00 634.00 646.50 664.50 476.50 276.50 73.00 4300.00
1949 2.67 b 67.20 c 115.50 352.50 396.50 570.00 672.00 565.50 f 699.50 451.00 482.50 146.00 3955.37
1950 68.00 163.00 230.00 333.50 323.00 481.50 727.50 678.00 549.50 593.00 364.00 329.50 4840.50
1951 134.00 130.50 234.50 258.00 381.00 479.00 730.00 691.00 659.00 519.50 267.00 88.00 4571.50
1952 63.00 149.50 97.50 264.50 484.50 419.00 720.00 757.00 756.00 519.00 193.00 107.50 4530.50
1953 246.00 189.50 214.50 201.50 364.00 473.50 800.50 674.00 646.00 538.50 352.50 184.50 4885.00
1954 108.00 321.00 154.50 304.00 411.50 495.50 846.00 685.50 666.00 467.00 363.50 155.00 4977.50
1955 57.50 126.00 265.00 267.00 357.00 482.50 655.50 832.50 741.50 435.50 272.50 132.00 4624.50
1956 131.50 35.50 275.00 243.00 406.50 592.00 711.00 691.50 805.00 453.00 426.50 241.00 5011.50
1957 103.50 251.50 292.50 308.00 408.50 697.50 815.00 807.00 668.00 453.00 226.00 261.50 5292.00
1958 189.10 a 219.00 146.00 384.50 517.50 592.50 718.50 804.34 c 792.50 692.50 348.00 333.00 5737.44
1959 259.22 b 110.96 a 324.50 f 477.50 425.00 654.50 879.50 799.50 685.00 585.50 440.50 255.50 5572.69
1960 46.00 g 153.50 338.50 423.00 533.50 500.50 f 847.50 753.50 808.00 531.50 249.00 224.50 4862.50
1961 305.50 265.50 260.00 395.50 383.00 601.50 773.00 806.50 643.00 545.00 294.81 d 160.50 5433.81
1962 215.00 99.50 124.50 470.50 385.50 512.50 668.00 808.00 678.00 515.00 317.50 208.00 5002.00
1963 131.00 331.00 215.50 244.00 418.00 479.50 706.50 772.50 830.50 564.00 321.50 250.50 5264.50
1964 127.50 194.50 230.50 290.00 380.00 497.00 760.00 775.50 631.50 665.00 256.00 155.00 4962.50
1965 230.00 190.00 225.00 328.50 416.50 423.50 687.50 836.50 568.50 695.50 293.50 163.50 5058.50
1966 132.50 124.00 320.00 435.00 458.00 605.50 750.00 821.00 707.00 595.50 320.00 214.00 5482.50
1967 195.00 295.50 261.00 118.00 494.00 463.00 810.00 936.00 755.00 662.50 416.50 136.50 5543.00
1968 189.00 316.50 337.00 373.00 451.00 570.00 783.50 730.50 713.00 523.50 341.00 124.50 5452.50
1969 183.50 69.50 232.50 335.00 482.00 463.50 760.50 875.50 720.00 493.00 398.00 228.00 5241.00
1970 158.00 276.00 285.00 288.50 508.00 593.00 803.00 826.00 699.00 505.00 325.50 139.50 5406.50
1971 249.00 196.00 270.50 299.50 365.00 547.50 793.00 899.50 771.50 547.50 279.50 69.00 5287.50
1972 146.50 252.00 399.50 384.50 500.50 620.00 842.00 827.50 677.00 489.00 270.00 199.00 5607.50
1973 121.50 189.50 154.00 337.50 515.00 684.00 727.50 761.00 605.00 592.50 0.00 z 231.98 a 4919.48
1974 154.50 239.00 238.38 b 399.50 447.50 646.50 782.50 715.50 735.00 513.00 349.66 a 159.50 5380.53
1975 231.00 138.44 a 189.50 188.00 414.50 479.50 728.50 709.50 756.50 477.92 a 302.00 209.00 4824.36
1976 281.00 177.00 267.00 236.50 485.50 645.50 722.50 695.50 646.00 610.50 463.50 254.00 5484.50
1977 186.50 336.00 176.00 380.00 323.50 584.00 774.00 798.50 650.50 592.50 443.50 289.00 5534.00
1978 185.50 198.50 338.00 0.00 z 564.00 681.50 773.00 732.50 735.00 654.00 245.50 119.50 5227.00
1979 87.50 132.50 0.00 z 360.50 467.00 655.00 740.50 728.50 835.50 519.50 298.00 291.00 5115.50
1980 208.00 316.50 286.50 410.50 379.00 591.00 856.50 786.50 636.50 587.00 366.00 319.50 5743.50
1981 262.50 300.00 249.00 400.00 487.50 794.00 829.00 870.00 730.50 481.00 360.00 251.00 6014.50
1982 131.50 240.00 199.50 344.00 453.00 455.50 793.50 869.00 739.50 605.00 241.50 132.00 5204.00
1983 225.50 196.50 235.50 242.00 491.00 538.50 743.00 871.00 812.00 622.00 279.00 183.50 5439.50
1984 280.00 283.00 387.00 398.00 677.00 626.50 889.50 856.50 925.00 501.00 228.00 95.00 6146.50
1985 118.00 207.50 217.00 472.00 459.00 681.00 892.00 805.50 651.00 584.00 230.00 256.50 5573.50
1986 345.00 243.50 375.00 410.00 540.00 638.00 736.00 848.00 543.00 542.50 421.00 214.50 5856.50
1987 154.00 232.00 272.00 536.50 553.00 629.50 663.00 740.00 754.00 647.50 332.00 128.00 5641.50
1988 197.00 339.00 411.50 421.50 547.00 584.50 804.50 743.50 699.50 636.50 303.50 180.00 5868.00
1989 128.50 173.00 356.50 510.50 468.50 583.50 791.00 705.50 743.00 526.50 382.50 237.50 5606.50
1990 195.50 165.00 295.00 401.50 454.00 684.00 845.00 745.50 760.00 686.50 408.00 163.00 5803.00
1991 211.00 384.50 172.00 418.50 469.00 552.50 712.00 787.00 800.50 737.50 462.00 223.50 5930.00
1992 248.00 310.00 275.00 545.00 563.00 620.00 807.00 919.50 789.50 614.50 349.00 96.50 6137.00
1993 115.50 158.00 391.50 482.00 582.00 680.00 702.50 776.50 752.00 629.00 351.00 188.00 5808.00
1994 262.50 161.00 368.00 410.00 432.50 707.50 703.00 931.00 746.00 538.50 176.00 170.00 5606.00
1995 114.00 341.00 287.50 353.00 390.50 567.00 803.50 884.00 839.00 644.50 435.50 216.50 5876.00
1996 223.00 276.00 349.00 522.50 575.00 689.50 823.00 854.00 681.50 509.00 331.50 186.50 6020.50
1997 191.50 273.50 443.00 437.50 665.50 630.00 764.50 894.50 901.00 626.50 375.00 158.00 6360.50
1998 188.00 125.50 314.00 342.50 385.50 529.00 856.50 978.50 700.00 541.00 295.00 192.50 5448.00
1999 217.00 219.50 206.00 295.50 454.50 576.00 806.50 812.72 a 711.21 a 755.00 362.00 254.41 b 5670.34
2000 259.00 222.68 a 331.70 a 510.50 632.00 730.00 786.37 a 902.00 773.00 490.83 a 244.66 a 314.98 c 6197.72
2001 142.00 116.15 a 348.00 325.34 a 631.88 a 729.60 e 765.18 a 825.00 755.00 608.78 b 360.54 b 150.19 b 5757.66
2002 187.00 298.00 300.00 361.50 485.50 652.00 781.50 762.00 816.50 475.50 455.50 180.12 b 5755.12
2003 453.00 220.50 384.00 298.00 508.50 550.50 883.00 925.50 775.00 740.00 281.00 209.00 6228.00
2004 227.00 165.00 498.50 471.00 635.00 618.00 798.50 780.50 805.50 504.00 262.00 236.00 6001.00
2005 235.00 223.00 329.08 e 404.00 456.50 j 577.50 833.50 835.00 543.50 g 564.00 433.50 264.00 4698.58
2006 247.00 291.50 171.00 306.00 549.00 773.00 1005.00 802.50 762.50 549.00 461.00 167.00 f 5917.50
2007 185.00 252.00 423.67 a 399.60 e 510.50 631.50 843.50 892.50 721.00 615.00 408.00 144.50 6026.77
2008 148.00 218.00 394.00 472.50 517.50 742.50 803.50 869.50 809.00 767.50 512.00 196.00 6450.00
2009 359.50 215.50 352.50 437.50 627.50 562.00 887.50 872.50 896.00 604.00 436.50 191.50 6442.50
2010 268.50 251.50 389.50 353.50 485.00 623.50 752.50 834.50 800.00 582.00 367.00 260.00 5967.50
2011 324.47 a 148.00 323.50 448.50 481.50 567.50 812.00 863.50 776.00 645.50 331.55 a 200.50 5922.52
2012 349.00 259.50 324.50 450.00 576.50 644.00 790.50 992.00 945.00 689.50 420.00 195.50 6636.00
2013 221.50 209.50 421.00 9.50 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 852.00
Period of Record Statistics
MEAN 165.63 180.28 252.93 333.32 442.98 561.69 749.61 769.25 686.32 527.61 318.20 177.19 5185.26
S.D. 80.12 83.57 95.79 93.51 93.05 86.03 76.37 86.30 102.03 100.16 85.20 70.67 689.91
SKEW 0.57 0.18 0.13 0.12 0.17 0.38 0.20 0.27 -0.08 -0.08 0.03 0.14 -0.12
MAX 453.00 384.50 498.50 545.00 677.00 794.00 1005.00 992.00 945.00 767.50 512.00 333.00 6636.00
MIN 0.50 25.00 54.00 118.00 195.50 397.50 565.00 562.50 413.00 237.50 147.50 30.00 3755.02
NO YRS 107 106 105 105 104 104 107 106 107 106 106 105 91