PORTHILL, IDAHO

Monthly Total Growing Degree Days

(107264)

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
1892 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
1893 0.00 0.00 0.00 0.00 c 112.00 161.00 542.00 506.50 179.00 0.00 0.00 0.00 a 1500.50
1894 0.00 0.00 0.00 20.17 a 173.00 271.55 a 368.00 i 518.22 a 96.00 4.50 1.00 0.00 1084.44
1895 0.00 0.00 a 0.00 65.50 127.62 a 298.93 b 271.50 l 497.07 b 47.00 16.00 4.50 0.00 a 1056.61
1896 0.00 0.00 a 0.00 6.50 129.00 376.00 613.00 478.95 a 154.50 17.57 a 0.00 0.00 d 1775.52
1897 0.00 0.00 0.00 a 109.50 434.00 396.50 458.00 700.00 153.50 49.08 a 0.50 0.00 2301.08
1898 0.00 0.00 a 0.00 68.00 274.00 360.00 341.50 q 0.00 z 0.00 z 58.50 0.00 0.00 e 760.50
1899 0.00 e 0.00 0.00 0.50 105.50 166.00 616.50 237.50 85.50 0.00 0.00 0.00 a 1211.50
1900 0.00 0.00 0.00 53.50 60.00 462.00 514.50 261.43 a 127.00 0.00 0.00 0.00 1478.43
1901 0.00 0.00 0.00 0.00 z 132.00 n 146.50 483.50 530.00 48.50 15.00 0.00 0.00 1223.50
1902 0.00 0.00 0.00 0.00 136.50 202.00 368.50 402.50 118.50 9.00 0.00 0.00 1237.00
1903 0.00 0.00 0.00 8.00 78.00 378.50 351.00 394.50 70.00 8.50 0.00 0.00 1288.50
1904 0.00 0.00 0.00 29.00 141.50 249.00 496.00 396.50 170.50 25.50 0.00 0.00 1508.00
1905 0.00 0.00 0.00 36.50 123.50 263.50 539.00 461.00 197.00 10.50 0.00 0.00 1631.00
1906 0.00 0.00 0.00 58.00 153.50 241.00 658.00 457.50 230.50 56.50 0.00 0.00 1855.00
1907 0.00 0.00 0.00 6.50 133.50 270.00 460.00 326.00 147.50 28.50 0.00 0.00 1372.00
1908 0.00 0.00 0.00 26.50 75.50 250.00 526.50 428.50 192.00 14.50 2.00 0.00 1515.50
1909 0.00 0.00 0.00 0.00 96.00 289.00 414.50 370.00 211.00 3.50 0.00 0.00 1384.00
1910 0.00 0.00 0.00 62.50 170.00 265.00 499.00 319.50 167.50 69.00 0.00 0.00 1552.50
1911 0.00 0.00 0.00 21.00 43.00 267.00 463.00 333.00 100.50 1.00 0.00 0.00 1228.50
1912 0.00 0.00 0.00 2.00 171.00 387.32 b 367.00 354.00 58.50 5.50 0.00 0.00 1345.32
1913 0.00 0.00 0.00 12.50 133.00 280.50 399.50 426.50 131.00 6.50 0.00 0.00 1389.50
1914 0.00 0.00 0.00 13.50 105.50 227.50 504.00 443.50 103.00 14.50 0.00 0.00 1411.50
1915 0.00 0.00 0.00 64.00 141.00 248.50 399.00 576.50 135.50 27.50 0.00 0.00 1592.00
1916 0.00 0.00 0.00 13.00 44.50 192.50 385.00 397.50 128.50 6.00 0.00 0.00 1167.00
1917 0.00 0.00 0.00 0.00 107.50 223.50 521.00 409.50 172.50 53.50 0.00 0.00 1487.50
1918 0.00 0.00 0.00 24.00 78.00 370.50 491.00 364.50 244.00 65.50 0.00 0.00 1637.50
1919 0.00 0.00 0.00 21.50 130.50 281.50 496.00 444.50 154.50 15.50 0.00 0.00 1544.00
1920 0.00 0.00 0.00 1.00 49.00 188.00 578.00 446.00 127.50 14.50 0.00 0.00 1404.00
1921 0.00 0.00 0.00 4.00 149.00 319.00 467.50 447.50 85.50 18.50 0.00 0.00 1491.00
1922 0.00 0.00 0.00 6.00 92.50 361.50 500.50 478.50 226.00 25.00 0.00 0.00 1690.00
1923 0.00 0.00 0.00 18.50 98.00 279.00 502.00 374.00 153.50 14.00 0.00 0.00 1439.00
1924 0.00 0.50 0.00 17.50 222.00 258.50 466.00 266.50 87.41 a 0.00 0.00 0.00 1318.41
1925 0.00 0.00 0.00 22.50 126.50 281.50 518.50 265.00 144.50 0.00 0.00 0.00 a 1358.50
1926 0.00 0.00 0.50 122.50 143.00 359.46 b 599.00 381.50 92.00 34.50 0.00 0.00 1732.46
1927 0.00 0.00 0.00 29.50 62.50 304.00 473.00 456.00 124.00 31.00 0.00 0.00 1480.00
1928 0.00 0.00 0.00 14.48 a 184.00 272.00 497.50 386.50 176.00 2.00 0.00 a 0.00 1532.48
1929 0.00 0.00 0.00 16.00 132.00 225.50 478.50 466.00 87.50 6.50 0.00 0.00 1412.00
1930 0.00 0.00 1.00 63.50 86.00 260.00 528.50 520.50 236.50 20.00 0.00 0.00 1716.00
1931 0.00 0.00 0.00 31.00 218.50 318.21 b 533.50 513.50 183.50 11.50 4.50 0.00 1814.21
1932 0.00 0.00 0.00 19.50 141.00 341.50 476.50 469.00 177.00 28.50 0.00 0.00 1653.00
1933 0.00 0.00 0.00 29.00 95.00 277.50 487.50 487.00 120.50 6.50 0.00 0.50 1503.50
1934 0.00 0.00 0.00 89.50 191.50 324.00 503.00 447.50 139.00 40.50 0.00 0.00 1735.00
1935 0.00 0.00 0.00 2.50 106.50 258.50 441.50 385.50 243.00 30.00 0.00 0.00 1467.50
1936 0.00 0.00 0.00 76.50 270.50 389.50 566.50 523.00 177.00 19.00 0.00 0.00 2022.00
1937 0.00 0.00 0.00 3.50 153.00 306.00 544.00 381.50 274.00 31.50 0.00 0.00 1693.50
1938 0.00 0.00 0.00 18.50 132.00 368.50 596.00 396.50 340.50 32.00 0.00 0.00 1884.00
1939 0.00 0.00 0.00 42.50 153.50 191.50 514.00 424.00 f 185.50 18.50 0.00 0.00 1105.50
1940 0.00 0.00 0.00 11.00 207.00 418.00 592.00 521.00 365.50 67.50 0.00 0.00 2182.00
1941 0.00 0.00 0.50 60.00 141.00 351.00 606.50 424.00 80.00 4.00 1.50 0.00 1668.50
1942 0.00 0.00 0.00 33.00 123.50 245.50 507.00 508.50 250.00 60.00 0.00 0.00 1727.50
1943 0.00 0.00 0.00 22.76 a 107.00 218.04 b 485.15 a 409.50 221.50 65.62 a 0.00 0.00 1529.56
1944 0.00 0.00 0.00 33.50 185.00 366.11 c 533.00 440.50 310.00 47.50 0.00 0.00 1915.61
1945 0.00 0.00 0.00 5.00 175.00 288.50 611.50 542.50 172.24 a 40.50 5.00 0.00 1840.24
1946 0.00 a 0.00 0.00 34.50 180.50 262.50 485.50 453.00 163.00 3.50 0.00 0.00 1582.50
1947 0.00 0.00 0.00 37.50 191.00 247.00 541.00 412.00 225.00 55.00 0.00 0.00 1708.50
1948 0.00 0.00 0.00 40.86 a 178.50 408.21 b 440.50 387.00 205.50 12.50 0.00 0.00 1673.08
1949 0.00 0.00 0.00 41.00 249.50 296.50 468.50 458.80 a 219.00 2.07 a 0.00 0.00 1735.37
1950 0.00 0.00 0.00 0.00 112.50 297.50 490.00 486.00 255.00 2.00 0.00 0.00 1643.00
1951 0.00 0.00 0.00 10.00 157.00 272.50 534.50 427.00 184.50 20.00 0.00 0.00 1605.50
1952 0.00 0.00 0.00 70.50 171.00 299.50 482.50 475.00 273.00 50.00 0.00 0.00 1821.50
1953 0.00 0.00 0.00 12.00 141.50 215.00 534.00 488.50 227.50 21.00 g 0.00 j 0.00 1618.50
1954 0.00 0.00 0.00 8.00 192.00 229.00 470.50 398.50 193.00 5.50 0.00 0.00 1496.50
1955 0.00 0.00 0.00 4.00 64.00 328.00 468.50 447.00 225.00 2.00 0.00 0.00 1538.50
1956 0.00 0.00 0.00 28.50 244.00 266.50 549.00 470.50 224.50 28.50 0.00 0.00 1811.50
1957 0.00 0.00 0.00 31.50 291.00 357.50 439.50 359.50 239.50 23.50 0.00 0.00 1742.00
1958 0.00 k 0.00 0.00 z 6.00 329.50 440.50 587.50 627.50 225.52 a 23.00 0.00 e 0.00 2239.52
1959 0.00 0.00 0.00 7.00 102.00 308.50 526.50 382.00 137.50 11.50 0.00 0.00 1475.00
1960 0.00 0.00 0.00 23.00 86.50 327.00 633.00 379.00 181.50 21.00 0.00 0.00 1651.00
1961 0.00 0.00 3.00 8.00 169.50 474.50 543.50 548.00 84.31 a 3.00 0.00 0.00 1833.81
1962 0.00 0.00 0.00 39.50 112.50 302.00 425.50 376.00 199.00 20.00 0.00 0.00 1474.50
1963 0.00 0.00 0.00 21.50 142.50 304.50 419.50 469.00 304.00 40.50 0.00 0.00 1701.50
1964 0.00 0.00 0.00 0.00 115.00 313.50 521.00 328.00 88.00 11.00 0.00 0.00 1376.50
1965 0.00 0.00 0.00 26.50 126.00 354.00 547.00 523.50 67.50 37.50 0.00 0.00 1682.00
1966 0.00 0.00 0.00 3.50 198.00 252.00 484.00 442.00 347.50 19.50 0.00 0.00 1746.50
1967 0.00 0.00 0.00 0.00 133.00 366.00 547.50 606.00 394.00 25.50 0.00 0.00 2072.00
1968 0.00 a 0.00 0.00 32.50 108.00 260.00 521.50 391.00 172.00 6.00 0.00 0.00 1491.00
1969 0.00 0.00 0.00 17.00 247.50 399.00 438.00 477.00 229.00 0.50 0.00 0.00 1808.00
1970 0.00 0.00 0.00 2.00 194.50 450.50 593.50 528.03 a 99.50 15.00 0.00 0.00 1883.03
1971 0.00 0.00 0.00 18.50 192.50 215.00 474.50 621.00 111.00 20.50 0.00 0.00 1653.00
1972 0.00 0.00 0.50 4.00 206.50 289.00 422.50 554.50 148.50 4.00 0.00 0.00 1629.50
1973 0.00 0.00 0.00 15.00 181.00 312.00 557.50 524.00 233.00 6.50 0.00 0.00 1829.00
1974 0.00 0.00 0.00 26.00 89.00 420.00 476.00 434.00 198.50 6.50 0.00 0.00 1650.00
1975 0.00 0.00 0.00 3.00 119.00 251.50 605.00 337.00 181.55 a 17.50 4.00 0.00 1518.55
1976 0.00 0.00 0.00 11.50 146.00 217.50 439.68 a 350.50 208.00 12.00 0.00 0.00 1385.18
1977 0.00 0.00 0.00 65.00 92.50 432.50 458.00 514.00 132.00 0.00 0.00 0.00 1694.00
1978 0.00 0.00 0.00 25.50 64.50 337.00 500.00 380.50 222.93 a 25.00 1.50 0.00 1556.93
1979 0.00 a 0.00 a 0.00 38.00 149.50 363.00 549.50 538.00 234.00 22.00 0.00 0.00 1894.00
1980 0.00 0.00 0.00 85.50 211.50 264.50 465.50 301.00 139.50 30.50 0.00 0.00 1498.00
1981 0.00 0.00 0.00 33.00 132.00 172.00 392.67 a 516.50 188.00 4.00 0.00 0.00 a 1438.17
1982 0.00 a 0.00 a 0.00 13.50 121.50 431.00 405.00 423.00 172.00 6.50 0.00 0.00 1572.50
1983 0.00 0.00 0.00 a 0.00 z 213.50 310.00 398.00 551.00 135.00 3.50 0.00 0.00 1611.00
1984 0.00 0.00 0.00 29.50 62.00 276.50 543.50 496.50 145.50 32.55 a 0.00 0.00 b 1586.05
1985 0.00 0.00 0.00 39.00 257.50 339.00 688.00 392.15 a 85.18 b 7.00 0.00 0.00 a 1807.83
1986 0.00 a 0.00 1.50 22.24 a 218.00 438.00 367.35 a 593.65 a 95.50 7.50 0.00 0.00 1743.74
1987 0.00 a 0.00 0.00 71.00 226.50 426.50 504.00 415.50 272.50 16.00 0.00 0.00 1932.00
1988 0.00 0.00 0.00 56.50 179.00 361.50 515.00 500.98 c 198.50 63.00 0.00 0.00 1874.48
1989 0.00 0.00 0.00 26.50 147.25 c 394.00 553.00 379.50 196.50 3.00 0.00 0.00 1699.75
1990 0.00 0.00 2.00 48.00 103.33 a 289.50 560.50 535.00 298.00 0.50 2.07 a 0.00 1838.90
1991 0.00 0.00 0.00 16.11 c 123.00 252.00 534.50 0.00 z 231.00 22.73 a 0.00 0.00 1179.34
1992 0.00 0.00 0.00 42.50 212.00 489.00 476.00 488.50 122.00 35.00 0.00 0.00 a 1865.00
1993 0.00 0.00 0.00 2.00 329.50 310.00 306.50 416.00 180.50 25.00 0.00 0.00 1569.50
1994 0.00 0.00 0.50 66.00 212.50 274.50 605.53 a 543.00 281.90 a 6.00 0.00 0.00 a 1989.93
1995 0.00 0.00 a 0.00 b 10.50 203.05 a 309.00 520.50 337.50 278.00 4.28 b 0.00 0.00 a 1662.83
1996 0.00 0.00 0.00 14.50 72.33 a 314.48 a 539.40 a 458.50 109.50 19.63 a 0.00 0.00 a 1528.35
1997 0.00 0.00 0.00 b 0.00 z 187.03 a 311.67 c 481.53 a 475.85 a 208.45 a 16.00 0.00 a 0.00 1680.53
1998 0.00 a 0.00 0.00 54.50 256.27 a 353.04 b 672.38 b 551.00 348.00 12.00 0.00 0.00 c 2247.18
1999 0.00 0.00 0.00 13.45 a 99.00 270.50 452.00 558.50 188.57 b 16.50 3.00 0.00 1601.52
2000 0.00 0.00 0.00 25.00 137.50 299.00 552.83 a 529.50 137.00 6.72 a 0.00 0.00 1687.55
2001 0.00 0.00 2.00 27.50 216.00 283.00 535.00 597.00 332.50 8.86 c 0.00 0.00 a 2001.86
2002 0.00 0.00 0.00 28.00 133.50 372.00 592.50 465.50 203.50 8.00 0.00 0.00 1803.00
2003 0.00 0.00 0.50 16.00 164.00 400.50 661.50 605.50 287.00 75.00 0.00 0.00 2210.00
2004 0.00 z 0.00 7.00 44.00 168.50 357.93 a 584.00 588.50 201.50 29.00 g 0.00 0.00 1951.43
2005 0.00 c 0.00 0.00 63.00 204.50 248.50 537.50 445.50 171.00 21.50 0.00 z 0.00 1691.50
2006 0.00 z 0.00 0.00 33.00 193.00 385.50 661.00 497.50 166.50 i 30.00 5.00 0.00 e 1805.00
2007 0.00 d 0.00 b 0.00 d 16.00 194.04 d 332.50 559.00 h 388.50 h 227.00 5.00 j 0.00 0.00 769.54
2008 0.00 0.00 e 0.00 i 7.00 128.50 f 210.50 h 448.00 f 476.62 c 84.00 h 33.87 d 0.00 h 0.00 f 517.50
2009 0.00 g 0.00 0.00 d 2.50 j 142.50 j 162.50 n 98.50 z 65.50 z 0.00 z 5.50 z 0.00 z 0.00 z 0.00
2010 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 0.00 0.00
2011 0.00 0.00 0.00 0.00 f 105.00 252.00 453.50 579.59 c 299.00 44.50 0.00 a 0.00 1733.59
2012 0.00 0.00 0.00 41.25 b 130.00 240.50 557.48 a 362.00 k 221.00 25.32 a 3.00 0.00 1218.55
2013 0.00 0.00 0.00 b 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
Period of Record Statistics
MEAN 0.00 0.00 0.16 27.82 154.41 307.04 508.52 453.85 184.26 20.77 0.32 0.00 1644.99
S.D. 0.00 0.05 0.76 24.55 64.44 72.25 72.43 85.75 73.15 18.35 1.05 0.05 225.39
SKEW 0.00 10.82 7.02 1.29 1.07 0.28 -0.01 0.00 0.45 1.11 3.40 10.72 0.49
MAX 0.00 0.50 7.00 122.50 434.00 489.00 688.00 700.00 394.00 75.00 5.00 0.50 2301.08
MIN 0.00 0.00 0.00 0.00 43.00 146.50 306.50 237.50 47.00 0.00 0.00 0.00 1167.00
NO YRS 116 120 118 114 116 117 113 113 115 115 116 118 101