PALO ALTO, CALIFORNIA

Monthly Total Growing Degree Days

(046646)

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
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 509.00 298.50 198.50 58.50 1064.50
1954 48.50 88.00 82.00 290.50 318.50 419.50 540.00 433.00 430.00 320.50 145.00 41.00 3156.50
1955 8.50 51.00 141.00 96.50 361.00 398.50 446.50 432.50 435.50 330.00 148.50 127.50 2977.00
1956 67.00 20.50 115.50 196.50 362.50 471.00 492.50 487.00 494.50 314.00 130.50 26.50 3178.00
1957 13.00 129.00 174.50 258.50 347.00 522.50 546.50 480.00 507.50 355.00 120.00 34.00 3487.50
1958 44.00 171.00 66.50 227.22 c 392.00 494.50 522.00 581.50 598.50 376.00 153.00 74.00 3700.22
1959 84.00 53.50 165.00 286.50 317.50 449.00 539.50 536.00 441.00 420.50 131.00 25.50 3449.00
1960 47.50 61.50 177.00 193.50 281.50 517.50 504.27 a 455.00 428.50 288.50 97.00 37.72 a 3089.48
1961 38.00 93.00 93.50 211.50 233.50 489.50 564.50 535.50 396.35 d 328.50 98.50 34.00 3116.35
1962 32.50 66.00 60.00 246.72 a 261.50 409.50 428.00 499.50 368.00 288.50 125.17 a 58.50 2843.90
1963 9.50 170.50 76.50 140.56 c 207.00 j 414.00 e 473.00 472.50 509.50 307.50 97.00 3.00 2673.56
1964 6.00 26.50 73.50 141.00 183.50 350.00 487.45 b 496.00 396.50 339.50 70.50 85.54 d 2655.99
1965 19.50 32.00 78.00 199.82 b 247.50 329.00 417.98 a 533.20 a 356.00 365.80 a 152.59 a 1.19 e 2732.58
1966 14.50 m 6.00 m 65.50 k 163.00 j 198.50 l 428.89 c 411.50 509.00 425.50 302.50 139.00 53.96 d 2270.35
1967 40.50 37.92 d 123.45 c 34.44 c 256.50 g 229.00 m 266.00 p 344.50 l 280.00 o 232.50 m 156.50 j 55.50 291.81
1968 28.00 175.50 178.50 225.00 314.00 523.00 542.00 546.00 491.50 307.50 126.50 28.50 3486.00
1969 25.50 29.00 121.50 188.00 375.00 456.00 552.00 541.00 484.00 310.50 134.50 72.50 3289.50
1970 102.50 92.50 179.50 131.50 422.00 431.00 524.00 451.50 478.50 254.50 157.00 31.00 3255.50
1971 33.50 48.00 111.00 141.21 a 288.00 427.00 494.00 605.00 557.00 219.00 71.00 6.00 3000.71
1972 13.00 84.50 219.00 206.50 360.50 447.50 583.50 556.00 403.00 318.00 56.00 25.00 3272.50
1973 32.00 61.00 42.50 244.00 378.50 540.00 512.00 459.32 a 447.50 286.00 123.00 33.07 a 3158.88
1974 57.50 11.00 135.00 157.76 a 306.50 446.00 543.02 a 539.40 a 433.00 360.50 86.50 25.12 b 3101.30
1975 14.98 a 52.23 b 126.77 c 108.00 369.23 c 432.93 a 498.50 534.75 a 438.00 298.00 128.50 37.50 3039.40
1976 30.00 65.77 a 109.50 150.00 376.00 486.00 518.00 518.00 468.00 374.00 202.00 3.62 a 3300.88
1977 12.50 124.50 27.00 o 209.00 197.00 453.00 498.00 522.50 434.50 0.00 z 149.00 93.00 2693.00
1978 80.50 92.62 b 238.00 170.69 a 253.50 l 430.50 500.50 520.00 489.00 376.81 b 70.00 3.00 2971.62
1979 18.08 a 35.50 147.25 a 153.50 g 393.24 d 443.28 a 562.50 493.86 b 557.68 b 371.50 108.00 30.50 3161.39
1980 71.62 b 114.00 102.00 219.31 a 258.69 b 349.50 484.12 a 455.70 a 296.50 h 346.17 d 107.07 a 37.50 2545.67
1981 54.50 101.50 96.50 206.38 a 356.00 586.50 491.87 a 495.00 419.50 255.46 d 230.17 a 75.50 3368.88
1982 0.00 94.50 83.50 185.00 321.50 334.00 411.50 479.00 453.00 303.50 57.00 19.00 2741.50
1983 7.50 j 71.00 121.00 159.00 301.00 457.00 508.00 537.50 569.00 254.50 j 13.00 r 0.00 z 2723.50
1984 38.50 56.50 213.50 173.50 408.00 419.50 595.50 517.50 601.50 289.50 87.50 24.00 3425.00
1985 5.00 0.00 z 61.00 289.50 294.50 514.00 553.00 458.50 409.50 282.50 83.50 23.00 2974.00
1986 100.00 146.00 215.50 205.50 339.50 454.50 518.50 455.00 346.50 336.00 137.50 10.50 3265.00
1987 8.50 0.00 z 0.00 z 305.50 402.00 434.00 443.00 509.50 447.50 400.00 134.00 71.00 3155.00
1988 40.50 111.50 191.50 243.00 304.00 436.00 593.50 528.50 416.00 360.50 129.00 29.00 3383.00
1989 9.00 37.00 177.50 334.00 327.50 465.50 506.50 503.50 393.00 294.00 145.00 18.50 3211.00
1990 33.00 26.50 127.50 291.50 453.63 a 0.00 z 520.50 531.00 475.00 363.00 109.00 1.50 2932.13
1991 18.00 100.00 42.50 157.00 253.50 0.00 z 490.00 463.00 440.50 358.50 123.00 6.00 2452.00
1992 2.00 114.50 161.00 293.50 431.50 426.00 510.50 478.00 420.50 385.00 101.00 13.00 3336.50
1993 9.00 23.00 137.00 166.50 338.00 461.50 488.50 0.00 z 294.00 222.00 39.00 6.00 2184.50
1994 0.00 1.00 66.00 80.50 156.00 269.00 384.00 529.50 476.50 312.00 29.50 7.50 2311.50
1995 105.00 141.00 138.50 228.50 312.50 436.50 589.50 573.50 468.00 392.50 220.00 106.00 3711.50
1996 47.00 165.50 194.50 286.00 430.50 517.00 614.50 598.00 489.50 334.00 134.00 89.50 3900.00
1997 83.00 66.50 232.00 333.50 497.00 506.00 566.50 573.50 579.00 336.00 211.50 28.50 4013.00
1998 73.50 55.00 172.50 0.00 z 259.00 438.00 546.00 600.00 530.50 174.00 k 102.50 19.50 2796.50
1999 47.03 b 29.00 65.50 192.00 277.00 400.96 d 0.00 z 0.00 z 0.00 z 0.00 z 181.11 c 20.00 h 1192.61
2000 60.00 103.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 324.98 a 42.50 f 16.00 m 487.98
2001 3.50 v 5.19 a 94.03 a 85.50 402.43 d 561.43 b 416.50 g 526.48 a 379.50 f 330.00 f 205.38 d 34.10 a 1914.54
2002 13.00 88.50 126.00 236.00 312.00 488.00 425.00 i 0.00 z 517.00 345.50 139.50 34.50 2300.00
2003 100.00 48.00 138.00 f 96.00 i 355.00 294.50 l 473.00 f 553.50 569.50 427.44 e 52.50 j 38.50 2091.94
2004 25.63 e 21.00 j 201.50 j 0.00 z 222.00 l 471.50 527.55 c 572.00 516.50 299.50 90.00 29.00 2531.69
2005 3.00 81.00 196.50 179.50 355.50 433.00 567.54 e 506.50 400.50 324.50 145.50 87.00 3280.04
2006 21.00 82.50 51.50 f 179.50 370.50 506.00 623.50 502.89 d 432.50 288.00 126.50 16.50 3149.39
2007 4.50 71.50 186.00 201.00 359.50 438.60 e 549.00 382.50 h 433.50 257.00 124.50 15.50 b 2640.60
2008 9.50 34.50 125.50 172.20 e 346.00 280.00 l 568.13 e 441.00 g 496.73 d 240.00 i 162.00 7.15 e 1921.72
2009 29.00 f 44.43 e 93.00 g 236.00 394.96 d 461.00 390.50 i 460.00 f 361.00 j 216.50 l 53.00 h 15.00 k 1136.40
2010 11.00 m 57.50 128.50 138.00 253.00 465.00 d 482.22 d 467.50 497.50 0.00 z 126.50 45.50 f 2615.72
2011 31.53 b 27.48 a 106.71 e 192.41 a 0.00 z 402.50 529.14 b 486.91 b 503.04 b 369.86 b 50.17 a 8.04 d 2707.80
2012 8.61 d 47.80 b 110.50 216.11 c 359.17 b 471.11 c 491.50 496.00 d 367.24 a 355.97 b 135.54 b 44.00 3103.54
2013 7.48 b 10.50 k 95.00 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 7.48
Period of Record Statistics
MEAN 35.20 73.05 131.52 200.77 332.99 449.31 516.46 512.47 461.87 326.96 125.19 36.45 3222.47
S.D. 29.57 44.12 51.51 64.42 68.71 57.93 52.58 43.31 65.59 45.87 44.37 29.33 346.39
SKEW 0.89 0.65 0.24 -0.06 -0.29 -0.46 -0.36 0.21 0.08 -0.12 0.21 1.09 -0.12
MAX 105.00 175.50 238.00 334.00 497.00 586.50 623.50 605.00 601.50 427.44 230.17 127.50 4013.00
MIN 0.00 1.00 42.50 34.44 156.00 269.00 384.00 432.50 294.00 219.00 29.50 1.19 2311.50
NO YRS 55 55 51 53 52 53 52 51 54 51 55 55 33