PALO ALTO, CALIFORNIA

Monthly Total Growing Degree Days

(046646)

Base Temperature = 40 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
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 809.00 608.50 493.00 340.00 2250.50
1954 299.00 349.50 346.00 589.00 627.50 719.50 850.00 743.00 730.00 630.50 437.00 242.50 6563.50
1955 178.00 267.00 428.00 383.50 671.00 698.50 756.50 742.50 735.50 640.00 416.50 402.00 6319.00
1956 346.00 243.00 403.00 492.50 672.50 771.00 802.50 797.00 794.50 623.00 423.00 250.00 6618.00
1957 163.50 373.50 476.50 558.00 657.00 822.50 856.50 790.00 807.50 665.00 415.00 271.50 6856.50
1958 295.50 445.50 354.50 526.11 c 702.00 794.50 832.00 891.50 898.50 686.00 430.00 365.00 7221.11
1959 357.50 286.50 474.50 586.50 627.50 749.00 849.50 846.00 741.00 730.50 422.50 260.00 6931.00
1960 249.00 312.50 480.00 492.50 591.50 817.50 814.27 a 765.00 728.50 598.50 371.50 238.18 a 6458.95
1961 213.00 361.00 392.50 505.50 542.50 789.50 874.50 845.50 696.35 d 638.00 372.00 214.50 6444.85
1962 203.50 299.50 327.50 546.72 a 571.50 709.50 738.00 809.50 668.00 598.50 406.03 a 269.00 6147.26
1963 121.00 450.50 361.50 421.67 c 414.00 j 714.00 e 783.00 782.50 809.50 617.50 370.00 131.00 5562.17
1964 187.00 260.00 347.50 429.00 490.50 650.00 797.45 b 806.00 696.50 649.50 286.50 309.43 d 5909.37
1965 239.00 269.00 365.00 490.71 b 557.50 629.00 727.98 a 843.20 a 656.00 675.80 a 441.21 a 113.27 e 6007.67
1966 121.50 m 101.00 m 232.50 k 363.00 j 388.50 l 728.89 c 721.50 819.00 725.50 612.50 416.50 273.26 d 4297.15
1967 246.50 298.67 d 421.27 c 305.00 c 496.50 g 399.00 m 416.00 p 534.50 l 430.00 o 412.50 m 356.50 j 237.00 1508.43
1968 200.50 454.50 486.50 525.00 624.00 823.00 852.00 856.00 791.50 617.50 420.50 230.00 6881.00
1969 188.50 243.50 397.50 485.50 685.00 756.00 862.00 851.00 784.00 620.50 429.00 349.00 6651.50
1970 336.50 365.50 477.00 424.50 732.00 731.00 834.00 761.50 778.50 564.50 457.00 229.00 6691.00
1971 253.00 274.00 386.50 440.17 a 598.00 727.00 804.00 915.00 857.00 520.00 348.00 154.00 6276.67
1972 163.50 348.00 524.00 505.50 670.50 747.50 893.50 866.00 703.00 627.00 338.00 180.50 6567.00
1973 206.50 328.00 325.00 544.00 688.50 840.00 822.00 769.32 a 747.50 596.00 394.00 289.85 a 6550.67
1974 239.00 225.50 420.00 457.24 a 616.50 746.00 853.02 a 849.40 a 733.00 670.50 368.50 245.86 b 6424.52
1975 210.80 a 297.77 b 415.73 c 391.50 679.23 c 732.93 a 808.50 844.75 a 738.00 608.00 411.50 311.50 6450.21
1976 264.50 313.30 a 388.50 438.00 686.00 786.00 828.00 828.00 768.00 684.00 487.00 233.53 a 6704.84
1977 202.50 392.50 164.50 o 508.50 504.50 753.00 808.00 832.50 734.50 0.00 z 440.50 380.00 5556.50
1978 373.50 368.31 b 548.00 466.03 a 443.50 l 730.50 810.50 830.00 789.00 686.81 b 328.50 129.00 6060.15
1979 210.28 a 249.00 448.98 a 383.50 g 703.24 d 743.28 a 872.50 803.86 b 857.68 b 681.50 386.00 282.00 6238.32
1980 332.45 b 398.00 401.50 519.31 a 568.69 b 649.50 794.12 a 765.70 a 516.50 h 656.17 d 401.38 a 282.00 5768.81
1981 311.00 369.00 395.50 506.38 a 666.00 886.50 801.87 a 805.00 719.50 565.46 d 523.97 a 365.50 6915.67
1982 136.50 343.50 375.50 468.50 631.50 634.00 721.50 789.00 753.00 611.50 309.00 234.50 6008.00
1983 143.00 j 335.50 421.00 457.00 611.00 757.00 818.00 847.50 869.00 464.50 j 99.50 r 0.00 z 5116.00
1984 283.00 317.00 523.50 470.50 718.00 719.50 905.50 827.50 901.50 599.50 363.50 203.50 6832.50
1985 184.50 0.00 z 339.00 589.50 604.50 814.00 863.00 768.50 709.50 592.50 320.00 190.50 5975.50
1986 398.50 402.50 521.50 505.00 648.50 754.50 828.50 765.00 646.50 646.00 431.00 250.00 6797.50
1987 211.50 0.00 z 0.00 z 605.50 712.00 734.00 753.00 819.50 747.50 710.00 427.00 288.50 6008.50
1988 278.00 367.50 499.50 543.00 614.00 736.00 903.50 838.50 716.00 670.50 423.50 247.00 6837.00
1989 185.50 215.50 481.50 634.00 637.50 765.50 816.50 813.50 693.00 604.00 431.50 243.00 6521.00
1990 244.00 201.00 421.50 591.50 763.63 a 0.00 z 830.50 841.00 775.00 673.00 388.00 125.50 5854.63
1991 208.50 372.50 313.00 456.00 563.50 0.00 z 800.00 773.00 740.50 668.50 413.50 224.50 5533.50
1992 166.50 396.00 471.00 593.50 741.50 726.00 820.50 788.00 720.50 695.00 378.50 171.00 6668.00
1993 197.50 242.50 441.50 466.50 646.50 761.50 798.50 0.00 z 594.00 532.00 250.50 107.50 5038.50
1994 134.00 113.50 344.00 370.00 464.00 569.00 694.00 839.50 776.50 622.00 261.00 179.00 5366.50
1995 390.50 405.50 435.50 528.50 622.50 736.50 899.50 883.50 768.00 702.50 520.00 398.50 7291.00
1996 327.50 420.50 498.50 586.00 740.50 817.00 924.50 908.00 789.50 643.50 430.50 363.00 7449.00
1997 333.50 338.00 538.50 633.50 807.00 806.00 876.50 883.50 879.00 646.00 510.00 264.50 7516.00
1998 362.00 310.50 467.50 0.00 z 569.00 738.00 856.00 910.00 830.50 374.00 k 399.00 189.00 5631.50
1999 250.67 b 250.00 354.00 480.50 587.00 700.96 d 0.00 z 0.00 z 0.00 z 0.00 z 478.33 c 210.00 h 3101.47
2000 342.00 383.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 634.98 a 249.00 f 180.00 m 1360.48
2001 69.00 v 157.11 a 379.23 a 335.00 712.43 d 861.43 b 656.50 g 836.48 a 619.50 f 580.00 f 491.54 d 278.48 a 4051.70
2002 201.50 340.50 419.00 535.00 622.00 788.00 645.00 i 0.00 z 817.00 655.50 439.50 318.50 5136.50
2003 401.50 308.50 388.00 f 305.00 i 665.00 474.50 l 723.00 f 863.50 869.50 737.44 e 227.50 j 291.50 4136.94
2004 274.83 e 181.00 j 404.00 j 0.00 z 412.00 l 771.50 837.55 c 882.00 816.50 608.00 367.00 265.50 4822.88
2005 210.50 356.00 505.00 479.50 665.50 733.00 877.54 e 816.50 700.50 634.50 434.00 345.00 6757.54
2006 277.00 313.00 273.50 f 478.00 680.50 806.00 933.50 812.89 d 732.50 598.00 394.50 198.00 6223.89
2007 166.50 318.50 483.50 499.50 669.50 738.60 e 859.00 612.50 h 733.50 567.00 411.50 181.19 b 5628.29
2008 196.00 269.00 434.00 471.60 e 656.00 460.00 l 878.13 e 681.00 g 796.73 d 460.00 i 461.50 171.10 e 4334.06
2009 220.00 f 289.13 e 323.00 g 532.50 704.96 d 761.00 610.50 i 710.00 f 561.00 j 406.50 l 262.00 h 154.50 k 2287.59
2010 159.00 m 329.00 416.50 431.00 563.00 765.00 d 792.22 d 777.50 797.50 0.00 z 367.50 245.00 f 5239.22
2011 266.17 b 214.67 a 407.77 e 488.79 a 0.00 z 702.50 839.14 b 796.91 b 803.04 b 679.86 b 330.52 a 164.19 d 5693.55
2012 236.52 d 309.87 b 399.00 511.11 c 669.17 b 771.11 c 801.50 806.00 d 667.24 a 665.97 b 419.46 b 241.00 6497.95
2013 141.10 b 126.00 k 272.50 m 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 141.10
Period of Record Statistics
MEAN 247.22 317.52 425.16 495.84 642.76 749.31 826.46 822.47 761.87 636.66 405.21 249.32 6610.07
S.D. 73.55 71.56 61.41 70.34 69.07 57.93 52.58 43.31 65.59 46.36 59.02 73.63 439.52
SKEW 0.44 -0.38 0.15 -0.30 -0.31 -0.46 -0.36 0.22 0.08 -0.16 -0.40 0.12 -0.33
MAX 401.50 454.50 548.00 634.00 807.00 886.50 933.50 915.00 901.50 737.44 523.97 402.00 7516.00
MIN 121.00 113.50 313.00 305.00 464.00 569.00 694.00 742.50 594.00 520.00 250.50 107.50 5366.50
NO YRS 55 55 51 53 52 53 52 51 54 51 55 55 33