SAN FRANCISCO INTL AP, CALIFORNIA

Monthly Total Growing Degree Days

(047769)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 645.50 663.00 602.50 586.50 399.50 181.00 3078.00
1949 92.50 192.00 384.00 416.50 505.50 602.00 590.50 629.00 681.50 532.50 526.00 240.00 5392.00
1950 163.00 275.00 352.50 438.00 485.00 561.50 670.00 688.50 715.00 643.50 593.50 420.50 6006.00
1951 268.50 281.00 358.00 364.50 557.50 565.00 580.00 661.00 661.50 622.00 423.00 264.00 5606.00
1952 221.50 326.50 341.50 448.00 520.00 532.50 691.00 625.00 685.00 587.00 359.00 322.00 5659.00
1953 405.00 280.50 338.00 373.50 481.00 557.00 623.50 683.00 725.50 578.00 458.00 343.50 5846.50
1954 293.50 309.00 300.50 499.00 517.00 563.00 675.50 653.00 655.50 564.50 404.50 237.00 5672.00
1955 151.50 243.00 386.50 362.00 536.00 578.00 597.00 611.50 637.50 600.50 419.50 363.00 5486.00
1956 306.00 233.00 361.00 428.00 567.50 638.50 672.50 686.00 714.00 567.50 446.50 269.50 5890.00
1957 186.00 361.00 425.00 506.50 575.00 708.00 749.00 702.00 766.00 657.50 423.50 298.00 6357.50
1958 321.00 432.00 374.50 531.00 693.50 757.50 777.00 843.00 884.00 725.50 516.50 470.00 7325.50
1959 415.50 370.00 554.50 594.50 592.50 646.50 749.50 788.00 728.50 773.50 496.00 347.00 7056.00
1960 286.00 333.00 461.00 472.50 566.00 727.00 692.00 684.50 673.50 637.50 413.00 271.00 6217.00
1961 237.00 368.50 410.00 513.00 528.00 694.50 743.00 757.50 725.50 643.50 395.00 225.00 6240.50
1962 233.50 281.50 325.00 480.00 518.00 593.50 623.50 729.50 628.50 607.50 471.00 298.50 5790.00
1963 173.50 444.50 367.00 388.50 521.50 559.00 688.00 727.00 789.50 688.00 431.50 193.00 5971.00
1964 251.50 313.50 367.00 426.00 489.50 637.00 714.00 751.50 703.50 647.00 348.50 348.00 5997.00
1965 263.50 290.50 381.00 435.00 472.00 548.50 628.00 722.00 630.50 698.50 455.00 155.50 5680.00
1966 235.50 245.50 359.00 534.50 535.50 642.00 635.50 689.00 720.50 632.00 441.50 278.50 5949.00
1967 284.00 317.50 384.00 326.50 571.00 579.50 704.50 706.00 791.00 727.00 532.00 249.00 6172.00
1968 202.00 421.00 449.50 447.00 503.50 639.00 676.50 766.50 725.00 602.50 431.50 242.50 6106.50
1969 218.50 248.50 376.50 419.50 603.00 633.50 690.50 712.50 715.50 657.50 481.50 425.00 6182.00
1970 384.50 415.00 503.50 410.50 634.50 614.00 708.00 669.00 763.00 572.00 477.50 269.50 6421.00
1971 256.00 279.00 374.50 388.50 508.00 602.00 640.00 779.50 784.00 526.50 394.50 188.50 5721.00
1972 174.50 348.50 474.00 460.00 546.50 624.50 753.00 742.50 676.00 648.50 395.50 190.00 6033.50
1973 247.00 360.50 352.50 502.00 578.50 704.00 683.00 640.50 703.50 640.50 416.50 309.00 6137.50
1974 265.50 270.00 414.00 442.00 501.00 610.00 713.50 734.50 673.00 681.50 412.50 266.50 5984.00
1975 228.50 304.00 352.00 316.50 569.50 594.50 675.50 712.00 641.50 582.50 365.50 287.50 5629.50
1976 264.00 306.50 341.00 397.50 566.50 694.00 697.00 753.50 696.50 660.50 509.50 272.50 6159.00
1977 216.50 369.00 336.00 464.00 489.00 610.50 695.00 745.50 704.50 634.50 458.50 381.00 6104.00
1978 386.00 357.00 527.00 447.00 630.50 609.50 662.50 720.00 772.00 655.00 372.50 187.50 6326.50
1979 231.00 287.50 447.50 464.50 631.50 628.50 736.50 733.00 817.50 699.00 421.50 336.00 6434.00
1980 325.50 418.50 402.00 475.00 504.00 596.00 712.50 665.50 696.00 655.00 467.50 332.00 6249.50
1981 342.00 392.00 409.50 483.50 588.50 749.50 671.00 710.50 680.00 575.00 490.00 379.00 6470.50
1982 157.00 328.00 350.00 438.50 538.00 592.00 671.50 721.00 720.50 652.50 368.00 275.50 5812.50
1983 246.00 374.00 438.00 441.00 550.00 645.00 776.50 832.00 846.50 755.50 464.00 413.00 6781.50
1984 349.50 373.50 526.50 478.00 676.00 637.00 794.00 756.00 891.00 630.50 414.00 238.50 6764.50
1985 197.50 323.50 351.00 569.00 576.00 756.00 769.50 743.50 694.00 641.00 359.00 220.50 6200.50
1986 424.50 455.50 530.00 484.00 577.50 674.50 693.00 655.50 687.00 662.00 513.50 320.00 6677.00
1987 289.50 372.50 460.00 576.50 667.50 672.00 715.00 776.50 718.50 740.00 508.50 323.50 6820.00
1988 327.00 421.50 510.50 542.50 603.00 673.00 783.50 772.50 692.50 663.00 495.00 322.00 6806.00
1989 256.50 239.50 461.50 621.50 614.00 680.00 707.50 742.50 642.50 645.00 493.00 311.50 6415.00
1990 306.50 256.50 411.00 554.00 588.50 670.00 757.50 814.00 790.50 716.50 480.00 218.00 6563.00
1991 312.50 426.50 378.00 471.00 522.00 582.00 733.00 753.50 687.50 705.00 523.50 334.50 6429.00
1992 275.00 466.00 540.50 618.50 724.50 706.50 800.50 736.00 757.50 786.00 504.00 302.00 7217.00
1993 286.50 349.50 541.00 541.50 686.00 745.00 768.00 845.50 691.50 726.00 489.50 313.00 6983.00
1994 356.50 297.00 494.00 504.00 571.50 645.00 683.50 757.50 723.50 623.00 296.00 247.00 6198.50
1995 379.00 392.50 431.00 450.50 525.50 624.00 768.00 712.50 695.00 696.50 552.00 422.50 6649.00
1996 366.50 431.50 495.00 573.00 633.00 645.00 716.50 703.50 690.00 646.50 486.50 432.00 6819.00
1997 338.00 375.50 497.00 545.50 756.00 670.00 742.50 835.00 847.50 674.50 530.00 344.00 7155.50
1998 397.00 344.50 464.50 472.00 549.00 647.50 707.50 752.00 730.00 629.00 425.00 223.50 6341.50
1999 286.50 289.50 339.50 436.50 479.00 587.00 678.00 737.00 706.50 688.72 a 512.00 343.58 a 6083.80
2000 384.50 391.00 444.50 546.00 626.50 686.00 661.50 730.50 786.00 618.50 376.50 358.50 6610.00
2001 272.00 306.50 485.00 406.50 700.50 677.50 703.50 716.50 685.50 694.00 517.50 361.00 6526.00
2002 279.00 372.00 428.00 501.50 556.50 641.50 740.00 754.50 743.50 658.00 523.50 388.50 6586.50
2003 428.50 339.50 490.50 428.50 585.50 682.50 712.00 818.50 806.50 717.00 415.00 371.00 6795.00
2004 318.00 354.00 601.00 579.50 630.00 649.50 769.50 822.00 819.50 644.00 457.00 377.50 7021.50
2005 299.00 419.00 534.50 503.50 665.00 657.00 755.00 726.00 670.00 659.00 516.00 404.00 6808.00
2006 358.50 360.50 342.50 466.50 613.00 698.50 798.50 726.00 670.00 634.00 465.50 320.00 6453.50
2007 248.50 345.50 493.00 480.50 583.00 639.50 748.00 756.00 727.50 616.00 471.50 293.50 6402.50
2008 260.50 339.00 424.00 462.00 580.00 645.00 706.50 756.00 749.50 717.50 533.50 275.00 6448.50
2009 350.50 338.00 426.00 491.00 601.00 687.00 689.50 794.00 785.00 674.50 497.00 285.00 6618.50
2010 348.50 392.00 467.00 465.50 544.50 671.50 712.00 729.00 856.00 777.00 449.00 375.50 6787.50
2011 325.50 296.50 424.50 465.00 522.50 615.00 704.50 687.00 739.50 713.50 414.00 287.50 6195.00
2012 327.00 354.50 410.50 507.50 570.50 642.50 695.50 671.00 618.50 732.50 550.50 381.82 a 6462.32
2013 267.50 305.50 455.18 a 20.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.00 z 1028.18
Period of Record Statistics
MEAN 285.37 340.08 425.15 473.06 573.47 641.32 705.01 729.51 723.63 656.10 456.12 306.52 6323.48
S.D. 73.03 60.76 69.03 65.79 63.80 52.98 50.69 53.59 64.05 57.43 59.35 70.75 447.46
SKEW -0.12 -0.05 0.38 0.07 0.69 0.18 -0.24 0.12 0.66 0.09 -0.22 0.02 0.08
MAX 428.50 466.00 601.00 621.50 756.00 757.50 800.50 845.50 891.00 786.00 593.50 470.00 7325.50
MIN 92.50 192.00 300.50 316.50 472.00 532.50 580.00 611.50 602.50 526.50 296.00 155.50 5392.00
NO YRS 65 65 65 64 64 64 65 65 65 65 65 65 64