FORT ROSS, CALIFORNIA

Monthly Total Growing Degree Days

(043191)

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
1948 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
1949 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
1950 0.00 z 0.00 z 315.00 356.00 388.50 491.50 556.50 565.00 565.00 537.00 512.50 419.69 e 4706.69
1951 269.00 287.00 323.00 324.50 448.00 481.50 515.50 521.83 a 573.50 521.00 406.50 279.50 4950.83
1952 222.00 295.00 269.00 350.50 432.00 473.50 543.50 526.50 551.50 469.50 382.50 303.50 4819.00
1953 384.50 306.50 337.50 338.00 453.50 501.50 507.00 596.00 636.00 526.00 415.00 360.50 5362.00
1954 297.00 287.50 318.00 413.50 434.00 507.50 572.50 554.00 571.00 533.00 418.00 300.00 5206.00
1955 230.00 273.00 356.00 324.00 450.00 515.50 562.50 503.00 489.50 482.50 351.00 329.50 4866.50
1956 323.00 240.50 332.65 e 367.00 491.00 547.00 570.00 594.00 571.00 495.00 404.50 284.00 5219.65
1957 199.00 305.00 373.50 404.50 513.50 588.50 615.50 602.00 633.00 586.00 435.00 353.50 5609.00
1958 378.50 413.50 369.00 425.00 569.00 675.50 631.00 656.00 695.50 539.00 440.50 412.50 6205.00
1959 337.50 309.00 422.50 415.00 445.50 530.00 554.00 590.50 590.50 626.00 414.00 359.00 5593.50
1960 295.00 318.50 366.00 358.00 421.50 512.00 486.50 477.00 474.00 524.50 362.00 321.50 4916.50
1961 341.50 321.00 314.50 341.50 392.50 502.00 511.50 579.50 545.00 508.00 364.50 264.00 4985.50
1962 299.00 256.50 292.50 361.00 376.00 414.00 440.00 521.00 465.50 494.00 413.50 306.50 4639.50
1963 228.50 401.00 301.50 327.00 437.50 450.00 510.00 529.50 600.00 565.00 398.00 312.00 5060.00
1964 247.00 275.50 221.00 268.50 325.50 442.50 510.00 547.00 533.50 531.50 361.00 332.50 4595.50
1965 280.00 239.00 332.50 358.00 339.00 410.00 499.00 586.50 520.00 604.50 455.00 286.00 4909.50
1966 304.00 256.00 294.50 390.00 390.50 472.00 500.00 510.50 583.00 534.00 428.50 322.50 4985.50
1967 316.50 263.50 278.50 246.00 398.50 419.00 501.50 520.50 612.50 596.50 465.00 245.00 4863.00
1968 245.50 393.00 382.50 331.50 388.00 488.50 511.00 628.50 600.50 454.00 361.00 190.50 4974.50
1969 231.50 219.00 307.00 321.50 427.00 502.50 506.00 490.00 530.00 540.00 401.50 409.50 4885.50
1970 370.00 374.00 379.00 267.00 406.00 452.00 473.78 a 486.50 541.50 447.50 432.50 280.50 4910.28
1971 260.00 215.50 263.00 255.50 363.50 437.50 491.50 576.00 597.00 389.50 321.50 170.00 4340.50
1972 192.50 296.50 359.50 343.97 a 374.50 448.00 577.00 546.50 536.50 511.00 346.07 b 221.28 b 4753.31
1973 276.50 334.96 a 257.50 360.56 c 395.77 a 504.83 a 0.00 z 478.20 d 541.03 a 472.20 c 348.10 a 329.50 4299.15
1974 227.00 213.00 311.55 a 345.00 d 363.00 317.00 i 463.50 f 543.50 548.28 a 534.23 a 383.65 d 275.50 3744.71
1975 203.00 222.96 a 306.50 227.50 399.90 a 428.00 497.00 505.50 495.00 438.65 a 285.54 b 239.70 c 4249.24
1976 126.00 k 242.04 c 209.25 a 223.50 g 387.00 465.00 c 549.00 568.00 558.50 540.20 d 443.28 a 324.43 b 4286.70
1977 301.22 a 351.00 266.00 335.00 c 381.00 477.00 505.50 620.00 528.00 472.50 402.50 366.66 b 5006.37
1978 400.50 342.50 501.50 376.50 465.00 482.59 a 499.00 546.00 386.00 k 517.24 d 318.62 a 182.00 4631.45
1979 251.74 b 264.00 360.50 363.50 457.00 447.41 a 541.00 580.50 644.00 550.50 411.00 352.50 5223.66
1980 309.00 399.00 355.00 364.00 398.50 452.00 528.07 b 481.00 500.36 b 509.00 428.00 363.00 5086.93
1981 420.50 363.00 362.00 388.93 b 445.00 624.83 a 489.00 629.00 573.50 469.00 443.00 385.50 5593.26
1982 217.50 307.00 312.50 359.50 367.00 447.50 529.50 575.50 586.00 559.50 387.50 323.50 4972.50
1983 344.50 386.50 412.00 381.00 474.00 524.00 607.00 656.68 a 653.00 597.00 430.50 357.53 a 5823.72
1984 335.50 299.13 b 422.00 348.50 483.50 451.00 574.00 580.50 617.50 476.00 335.00 234.00 5156.63
1985 241.50 252.00 244.50 359.50 372.50 481.50 540.00 606.00 462.50 420.00 180.50 140.00 4300.50
1986 300.00 289.00 382.00 282.50 334.50 470.00 441.00 432.00 415.50 403.00 396.50 217.00 4363.00
1987 163.50 228.00 0.00 z 322.00 362.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 289.00 120.00 1484.50
1988 162.00 0.00 z 0.00 z 386.00 0.00 z 0.00 z 0.00 z 524.50 481.50 463.50 344.50 264.00 2626.00
1989 0.00 z 169.00 291.00 415.50 418.50 489.50 550.00 539.00 481.00 473.00 327.00 f 313.50 4140.00
1990 297.50 188.00 288.50 385.00 423.50 487.00 538.50 577.00 581.50 499.62 a 378.50 173.00 4817.62
1991 248.52 a 295.00 231.50 288.50 347.50 444.50 463.00 527.00 457.00 472.50 351.50 280.50 4407.02
1992 268.50 376.00 414.37 a 436.50 502.20 a 497.00 608.00 559.00 545.50 581.00 389.00 246.50 5423.57
1993 210.50 288.30 a 382.50 365.50 479.50 530.50 483.00 366.50 j 463.50 494.50 377.00 253.00 4327.80
1994 277.00 228.00 338.00 329.46 b 404.50 441.50 450.00 531.00 522.00 474.00 224.48 a 197.50 4417.45
1995 371.50 355.50 378.72 a 359.50 433.00 511.00 425.00 k 582.00 607.50 585.00 443.00 392.50 5019.22
1996 340.00 383.00 421.00 418.50 461.00 464.50 561.50 548.50 529.50 397.50 i 422.00 355.00 4904.50
1997 337.50 318.50 378.50 394.00 531.50 530.50 559.50 519.00 g 693.33 c 536.00 509.50 383.00 5171.83
1998 402.00 313.00 373.50 341.00 446.00 519.00 554.50 0.00 z 379.50 i 362.00 j 257.00 i 245.50 3194.50
1999 0.00 z 0.00 z 271.52 b 198.00 j 316.00 f 336.50 h 0.00 z 0.00 z 84.50 y 0.00 z 265.50 l 291.63 d 563.15
2000 253.00 f 246.50 j 0.00 z 445.38 d 0.00 z 0.00 z 312.50 l 0.00 z 382.00 k 400.50 g 259.00 f 250.50 h 445.38
2001 252.98 c 241.50 d 377.17 d 204.00 h 393.50 f 501.67 c 376.00 i 562.02 d 319.00 k 272.00 o 301.50 h 209.00 j 1935.33
2002 166.00 k 160.50 m 318.50 365.00 192.50 o 441.50 343.50 k 561.50 333.50 h 196.50 j 0.00 z 146.00 q 1686.50
2003 426.85 e 235.00 g 266.00 h 97.50 m 297.50 i 253.00 n 318.50 l 358.50 m 344.50 m 340.00 l 0.00 z 139.00 r 426.85
2004 249.00 f 107.50 p 326.50 g 292.50 h 474.50 360.00 j 565.15 e 266.00 r 352.50 l 497.50 379.20 e 151.00 p 1916.35
2005 300.46 e 289.00 f 424.00 360.50 498.38 e 293.00 l 295.00 o 240.50 p 383.50 f 292.00 k 196.50 p 141.50 o 1583.35
2006 183.50 o 168.00 k 144.50 h 346.50 413.52 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 760.02
Period of Record Statistics
MEAN 288.55 295.75 335.29 352.66 423.22 487.00 528.42 553.65 554.37 511.72 387.31 293.40 4985.89
S.D. 66.07 60.59 60.12 47.41 53.02 50.86 45.15 48.15 62.88 53.00 62.00 72.40 439.73
SKEW 0.20 0.13 0.12 -0.54 0.42 1.43 0.15 -0.05 0.12 -0.04 -0.94 -0.39 0.52
MAX 426.85 413.50 501.50 445.38 569.00 675.50 631.00 656.68 695.50 626.00 512.50 419.69 6205.00
MIN 162.00 169.00 209.25 227.50 325.50 410.00 440.00 432.00 415.50 389.50 180.50 120.00 4249.24
NO YRS 49 48 51 52 51 48 45 47 46 47 48 50 36