HALF MOON BAY, CALIFORNIA

Monthly Total Growing Degree Days

(043714)

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
1939 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 225.02 b 272.00 355.00 247.50 104.00 112.00 1315.52
1940 105.50 99.50 127.50 167.00 180.50 234.00 295.00 297.00 359.00 224.00 151.00 151.50 2391.50
1941 91.00 119.00 193.00 121.50 314.00 270.00 296.50 199.50 m 284.00 155.50 212.00 81.00 2137.50
1942 90.00 47.50 54.00 100.50 184.00 203.00 305.50 268.50 250.50 156.50 102.50 46.50 1809.00
1943 45.00 107.00 106.00 110.50 150.50 174.00 245.00 265.00 304.00 206.00 186.00 65.50 1964.50
1944 65.50 18.50 60.00 51.50 119.00 187.50 221.00 220.50 182.50 217.50 94.00 125.00 1562.50
1945 28.50 42.00 23.00 50.50 142.50 212.00 281.50 179.50 239.00 213.00 114.50 90.50 1616.50
1946 30.50 11.50 22.50 49.50 115.50 199.50 256.00 219.00 257.50 168.00 65.00 68.00 1462.50
1947 4.50 65.50 111.00 148.00 173.00 240.00 297.50 343.00 269.50 249.00 60.00 29.00 1990.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 234.50 266.00 197.00 241.00 97.00 2.00 1037.50
1949 0.00 15.00 65.00 55.00 154.00 222.50 191.50 268.50 118.00 n 112.93 c 0.00 z 0.00 z 1084.43
1950 0.00 z 25.20 c 45.50 37.50 i 74.00 160.00 201.50 235.94 d 247.50 220.00 279.00 128.50 1617.14
1951 30.50 64.00 51.00 32.50 152.00 140.50 167.50 193.00 278.50 191.00 117.50 42.50 1460.50
1952 17.50 55.00 49.50 47.50 99.00 132.50 258.50 276.00 319.00 224.00 112.00 58.00 1648.50
1953 123.00 49.00 o 0.00 z 46.00 f 144.50 188.50 178.00 274.00 337.50 198.00 92.00 35.00 1570.50
1954 10.00 104.50 23.00 81.00 123.00 175.00 211.50 214.50 233.00 202.50 147.00 60.00 1585.00
1955 13.50 25.00 50.50 18.00 81.00 157.50 161.50 154.50 147.00 159.00 93.10 a 68.50 f 1060.60
1956 51.31 b 13.00 50.00 82.00 165.52 c 223.39 b 253.00 195.50 298.97 a 223.50 193.45 a 84.50 1834.13
1957 19.50 105.50 91.89 c 136.00 213.68 c 250.50 274.41 d 266.08 a 316.61 b 293.98 a 133.50 106.50 2208.15
1958 84.96 d 95.00 g 67.88 b 150.50 235.00 351.50 306.50 315.34 b 360.50 214.00 142.00 151.50 2379.69
1959 95.50 58.00 137.84 c 156.43 b 184.50 231.00 297.00 336.50 297.00 299.15 a 135.50 g 120.26 b 2213.18
1960 50.00 58.50 119.50 120.50 166.50 261.00 244.50 227.00 231.00 207.50 136.00 116.50 1938.50
1961 132.50 81.00 62.50 119.00 172.50 275.50 285.00 369.00 312.50 257.00 79.50 32.50 2178.50
1962 117.50 46.50 28.50 108.00 115.00 143.50 169.50 267.50 217.24 a 220.50 137.00 70.00 1640.74
1963 29.40 b 128.50 37.50 80.00 142.00 156.00 e 255.50 235.00 212.50 h 293.50 162.00 73.50 1592.90
1964 32.00 72.00 48.00 41.50 70.00 180.00 250.50 220.00 g 255.50 251.00 119.00 68.50 1388.00
1965 75.50 16.50 62.00 117.50 115.50 143.79 a 185.00 321.00 258.50 323.00 184.00 17.50 1819.79
1966 49.00 9.50 44.00 127.50 48.50 165.50 176.00 240.50 289.50 279.00 158.50 56.50 1644.00
1967 69.23 a 92.50 47.50 21.00 99.50 154.00 267.00 264.50 347.50 320.00 228.50 81.50 1992.73
1968 110.50 132.50 122.50 91.50 138.50 184.00 240.00 318.50 276.50 191.00 107.50 47.00 1960.00
1969 21.00 7.50 84.00 24.00 108.50 171.00 150.00 141.50 221.00 178.00 206.00 125.00 1437.50
1970 129.50 88.00 87.00 50.00 169.00 132.50 167.50 159.00 250.00 194.50 185.00 39.00 1651.00
1971 83.00 63.00 58.00 25.50 53.00 120.50 113.00 257.50 266.00 88.50 87.50 0.50 1216.00
1972 4.00 63.50 95.58 a 60.00 81.50 154.50 239.00 315.00 309.00 311.50 131.50 61.48 a 1826.57
1973 46.00 111.50 0.00 z 111.50 133.50 219.00 232.50 226.00 272.00 225.00 95.00 59.50 1731.50
1974 50.00 25.00 92.00 78.50 92.50 187.50 274.00 300.00 280.50 258.00 126.50 44.00 1808.50
1975 66.43 c 39.00 45.50 17.50 115.50 137.50 196.50 215.50 207.00 143.50 78.00 53.06 e 1314.99
1976 92.50 38.13 b 25.12 b 37.50 137.00 199.00 248.50 362.00 303.50 261.90 b 196.00 88.50 1989.65
1977 68.50 87.00 35.00 38.50 113.00 185.50 230.50 338.42 a 288.00 e 190.00 85.18 b 125.00 1784.60
1978 131.50 97.50 207.00 119.50 168.50 215.50 245.00 281.50 290.00 188.50 48.00 19.24 b 2011.74
1979 28.50 31.50 92.00 77.00 141.00 160.50 258.50 288.50 348.10 a 301.50 126.00 128.50 1981.60
1980 81.00 154.50 86.00 94.50 133.00 212.50 295.00 262.50 250.50 179.50 126.92 d 148.50 2024.42
1981 111.00 110.50 100.00 94.00 138.00 238.00 219.50 271.50 252.00 170.50 210.00 98.17 a 2013.17
1982 20.00 79.00 71.00 128.00 127.50 244.50 262.00 277.00 282.00 252.00 134.00 78.50 1955.50
1983 99.00 107.00 131.00 125.00 179.80 a 238.39 b 307.00 402.50 419.42 d 347.50 139.50 93.00 c 2589.12
1984 95.00 59.55 a 99.50 66.00 138.43 b 159.50 312.00 311.00 328.50 184.93 b 92.00 42.50 1888.92
1985 39.27 a 67.41 a 30.00 92.59 a 146.73 a 233.00 272.50 298.50 280.50 226.50 0.00 z 85.00 1771.99
1986 140.00 143.00 158.50 77.50 96.00 272.50 290.00 303.00 265.50 219.50 150.50 59.50 2175.50
1987 28.00 101.50 79.50 108.00 190.50 98.50 o 0.00 z 322.00 267.50 278.50 163.00 62.00 1600.50
1988 61.00 97.50 45.50 103.50 60.50 m 195.50 99.00 s 0.00 z 209.00 204.00 104.50 67.50 1088.00
1989 27.00 8.00 90.00 178.50 146.00 225.00 238.00 279.00 261.00 199.50 198.00 f 112.50 1764.50
1990 60.40 b 43.04 a 66.00 131.00 159.00 194.50 280.50 339.00 302.00 136.00 73.00 14.50 1798.93
1991 13.00 52.50 8.00 20.50 22.00 87.00 220.00 291.50 232.50 205.50 114.50 49.71 b 1316.71
1992 57.50 165.50 184.50 206.50 227.50 271.50 353.50 249.60 b 259.00 292.00 133.45 a 31.00 2431.55
1993 52.50 63.50 134.50 44.50 174.50 198.00 190.00 312.00 0.00 z 234.50 99.50 i 59.00 1463.00
1994 57.50 j 32.00 107.00 99.50 109.00 i 159.00 222.00 260.50 306.00 213.00 35.00 13.50 1447.50
1995 96.50 147.00 117.00 104.50 155.50 171.00 331.00 280.50 293.50 272.50 132.00 95.00 2196.00
1996 95.50 142.00 117.50 132.50 152.00 139.00 232.50 241.00 215.50 190.00 131.00 127.50 1916.00
1997 83.50 59.00 69.50 105.00 259.50 216.50 285.00 392.50 397.50 260.50 247.50 102.50 2478.50
1998 106.00 66.50 107.50 109.50 172.50 234.50 244.50 276.00 272.50 183.00 74.50 43.00 1890.00
1999 62.50 16.50 17.00 82.50 48.50 134.50 220.00 296.00 258.00 206.50 134.50 74.00 1550.50
2000 76.50 90.50 67.50 126.00 164.00 253.50 257.50 273.00 325.00 225.00 82.50 131.50 2072.50
2001 52.00 59.50 92.00 37.50 48.00 w 101.50 n 255.50 272.50 236.50 249.50 0.00 z 0.00 z 1255.00
2002 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 260.50 298.50 141.00 h 98.50 i 55.50 m 43.50 m 559.00
2003 209.50 45.50 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 343.80 e 220.50 124.50 93.00 991.30
2004 63.50 35.50 143.50 141.00 200.50 217.50 338.00 367.50 209.50 206.50 119.00 78.50 2120.50
2005 61.50 103.50 163.50 96.50 241.00 217.00 289.50 265.50 219.50 138.50 176.00 123.50 2095.50
2006 50.00 78.00 21.00 121.50 170.00 260.50 278.50 305.00 194.00 212.00 118.00 75.00 1883.50
2007 13.50 59.50 59.50 55.50 151.50 183.50 312.50 311.50 254.00 167.50 102.00 32.00 1702.50
2008 30.00 32.00 24.00 48.50 149.00 152.50 269.00 291.50 212.00 190.50 171.50 38.50 1609.00
2009 148.50 55.00 58.50 90.50 133.00 277.00 282.50 335.50 261.00 210.50 102.50 49.00 2003.50
2010 91.00 79.50 76.50 78.00 103.50 215.00 267.50 284.50 237.00 200.50 104.50 82.50 1820.00
2011 93.52 a 43.56 a 78.00 104.00 150.00 199.00 262.50 258.50 244.14 a 279.00 65.50 15.50 1793.21
2012 80.00 38.50 47.02 a 122.00 118.00 177.93 a 261.50 246.00 180.50 251.88 c 208.89 c 61.48 a 1793.69
2013 80.50 31.23 b 52.50 5.50 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 164.23
Period of Record Statistics
MEAN 66.74 67.92 78.63 90.42 143.79 198.19 249.25 276.62 271.80 220.65 130.49 72.89 1865.05
S.D. 40.98 39.78 44.22 42.46 50.55 47.31 47.48 52.23 51.83 50.41 48.82 37.89 292.51
SKEW 0.66 0.47 0.83 0.15 0.42 0.39 -0.44 -0.19 0.34 0.14 0.70 0.22 0.13
MAX 209.50 165.50 207.00 206.50 314.00 351.50 353.50 402.50 419.42 347.50 279.00 151.50 2589.12
MIN 0.00 7.50 8.00 17.50 22.00 87.00 113.00 141.50 147.00 88.50 35.00 0.50 1216.00
NO YRS 70 69 69 68 67 68 71 70 70 73 67 70 53