RIVERSIDE, OREGON

Monthly Total Growing Degree Days

(357208)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201210
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
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 263.00 g 522.00 686.00 245.77 d 26.50 6.00 0.00 1486.27
1898 0.00 0.00 0.00 84.31 a 84.50 g 366.00 610.00 717.50 201.50 m 29.50 0.00 t 0.00 1807.31
1899 0.00 f 0.00 0.00 16.03 a 76.50 180.50 n 569.50 281.58 a 161.00 0.00 0.00 0.00 a 1104.62
1900 0.00 z 0.00 f 6.00 54.83 a 178.54 d 498.50 545.08 a 444.33 a 167.00 h 24.00 m 0.50 l 0.00 i 1727.28
1901 0.00 j 0.00 a 1.50 33.00 300.00 285.00 b 729.65 d 706.50 183.21 b 105.00 h 0.00 c 0.00 2238.86
1902 0.00 c 0.00 o 0.00 q 24.64 b 99.50 i 267.00 m 529.50 568.00 73.50 x 37.00 i 19.00 0.00 n 1141.14
1903 0.00 e 0.00 z 0.00 z 0.00 z 121.00 j 283.00 n 228.00 q 286.50 q 0.00 z 40.00 s 1.50 p 0.00 f 0.00
1904 0.00 a 0.00 z 0.55 c 129.11 b 207.50 437.07 a 659.50 683.50 312.50 59.42 a 0.00 0.00 b 2489.15
1905 0.00 c 0.00 0.00 23.50 124.00 338.28 a 753.50 690.50 348.00 5.50 s 0.00 0.00 b 2277.78
1906 0.00 q 0.00 0.00 86.90 a 105.00 m 255.52 a 0.00 z 514.50 f 271.73 d 7.00 r 0.00 m 0.00 n 614.14
1907 0.00 e 0.00 h 5.50 f 24.60 e 154.43 d 176.00 m 398.50 i 0.00 z 168.50 i 106.00 h 0.00 0.00 n 179.03
1908 0.00 4.50 21.81 d 101.25 b 67.88 b 323.65 d 0.00 z 0.00 z 353.28 a 99.00 28.85 d 0.00 c 1000.22
1909 0.00 z 0.00 z 0.00 z 0.00 z 71.00 k 384.60 e 513.57 a 732.93 c 0.00 z 9.54 e 0.00 k 0.00 z 1640.63
1910 0.00 z 0.00 z 0.00 z 117.50 h 272.50 479.00 811.00 532.37 e 190.18 b 179.69 d 0.00 b 0.00 b 2464.73
1911 0.00 b 0.00 0.00 27.50 7.00 455.00 646.57 c 0.00 z 138.00 79.57 a 0.00 0.00 1353.64
1912 0.00 a 0.00 b 0.00 43.39 b 67.68 a 348.50 378.50 q 469.00 82.50 6.50 0.00 b 0.00 1017.58
1913 0.00 0.00 1.50 50.00 337.50 467.07 a 653.00 227.00 w 393.00 14.00 0.00 0.00 1916.07
1914 0.00 a 0.00 3.00 32.50 273.50 357.00 700.50 673.00 252.50 72.00 2.50 o 0.00 z 2364.00
1915 0.00 0.00 29.50 164.50 63.50 334.50 759.50 805.50 347.88 d 49.50 1.00 0.00 a 2555.38
1916 0.00 b 0.00 0.53 b 60.50 57.50 245.00 471.00 g 495.47 b 289.00 4.50 0.00 a 0.00 1152.50
1917 0.00 0.00 0.00 b 0.00 z 91.00 h 278.50 o 837.50 656.74 d 332.50 113.00 0.00 0.00 m 1939.74
1918 0.00 z 0.00 a 4.00 0.00 o 134.50 645.50 708.87 a 481.50 361.50 96.50 0.00 0.00 2432.37
1919 0.50 0.00 9.00 79.00 212.50 377.00 728.00 651.50 287.59 a 6.00 10.00 o 0.00 2351.09
1920 2.58 a 0.00 0.00 10.50 119.50 327.50 685.50 627.23 a 352.00 40.50 0.00 a 0.00 2165.32
1921 3.00 0.00 4.00 4.00 201.00 527.50 588.00 565.50 67.00 70.50 0.00 0.00 2030.50
1922 0.00 0.00 r 0.00 z 4.50 n 79.50 443.50 697.50 634.50 367.50 92.50 0.00 0.00 2315.00
1923 0.00 0.00 4.00 25.00 154.00 229.50 634.00 443.00 g 338.00 26.00 0.00 0.00 f 1410.50
1924 0.00 0.00 0.00 7.50 219.50 276.21 a 565.00 489.59 b 234.50 3.00 0.00 g 0.00 i 1795.29
1925 0.00 a 0.00 1.50 86.00 181.50 407.00 680.00 341.52 a 170.36 b 7.00 0.00 z 0.00 z 1874.87
1926 0.00 z 0.00 z 0.00 z 62.22 c 117.11 d 443.79 a 739.72 b 598.50 120.50 32.03 a 0.00 c 0.00 l 2113.88
1927 0.00 b 0.00 e 2.50 41.90 a 114.70 a 431.90 a 625.00 554.90 a 235.00 65.21 b 13.50 f 3.88 c 2074.97
1928 0.00 0.00 10.00 46.15 d 352.50 321.21 a 737.36 c 111.00 x 196.00 h 77.00 u 0.54 b 0.00 a 1467.75
1929 0.00 0.00 3.50 3.00 180.12 b 375.56 c 720.50 593.00 f 188.00 90.50 0.00 2.50 1563.68
1930 0.00 1.00 12.00 155.00 112.00 360.50 768.50 650.00 301.50 36.00 0.00 0.00 2396.50
1931 0.00 0.00 10.00 9.50 i 319.19 d 438.50 766.00 644.00 272.00 33.50 7.50 0.00 2490.69
1932 0.00 0.00 3.00 52.00 174.00 397.24 a 567.00 495.50 296.50 92.00 3.50 0.00 2080.74
1933 0.00 0.00 0.00 46.00 80.50 502.50 0.00 z 579.00 275.50 124.50 0.00 5.00 1613.00
1934 2.50 0.00 z 0.00 z 171.50 340.00 380.00 713.00 715.00 258.00 88.00 14.00 0.00 2682.00
1935 0.00 a 0.00 2.50 15.50 210.00 482.59 a 640.00 620.00 299.00 71.00 0.00 0.00 a 2340.59
1936 0.00 0.00 0.00 129.50 327.00 487.50 782.50 655.50 246.50 107.50 0.00 a 0.00 2736.00
1937 0.00 b 0.00 1.50 k 32.50 i 200.31 e 0.00 z 0.00 z 665.98 a 193.00 j 0.00 z 0.00 g 0.00 866.29
1938 0.00 0.00 0.00 b 44.00 f 161.50 423.00 e 654.50 313.00 j 442.00 51.50 0.00 0.00 a 1732.50
1939 0.00 0.00 a 1.00 h 93.50 108.00 f 232.00 699.00 635.00 323.50 10.33 a 0.00 z 0.00 1993.33
1940 0.00 0.00 l 2.50 25.00 218.50 557.50 664.50 698.02 a 214.00 43.00 0.00 a 0.00 2423.02
1941 0.00 d 0.00 h 0.00 1.50 226.50 233.50 0.00 z 0.00 z 44.00 5.50 k 0.00 0.00 k 505.50
1942 0.00 0.00 0.00 42.00 61.50 0.00 z 652.03 a 580.00 234.81 d 94.50 5.00 g 0.00 1664.84
1943 0.00 0.00 y 7.50 j 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
1944 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
1945 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
1946 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
1947 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
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 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
1951 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
1952 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
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1954 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
1955 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
1956 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
1957 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
1958 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
1959 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
1960 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
1961 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
1962 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
1963 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
1964 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
1965 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
1966 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 40.00 f 21.00 e 0.00 c 21.00
1967 0.00 b 0.00 7.50 0.00 a 219.50 420.56 c 765.38 b 770.35 a 498.00 59.62 e 6.21 a 0.00 2747.11
1968 0.00 3.50 9.50 37.76 a 208.73 a 474.50 749.50 539.92 a 341.50 32.00 0.00 a 0.00 2396.91
1969 0.00 0.00 a 8.50 63.50 314.00 421.00 677.50 658.50 392.50 21.00 5.00 0.00 2561.50
1970 0.00 0.00 a 0.00 12.32 b 212.00 475.50 675.00 632.00 207.50 74.00 0.00 e 0.00 2288.32
1971 0.00 0.50 0.00 19.00 190.00 325.50 630.00 741.50 207.86 b 84.00 0.00 0.00 a 2198.36
1972 0.00 6.00 16.50 35.69 a 234.00 470.50 640.50 645.46 c 214.00 83.00 0.00 a 0.00 2345.65
1973 0.00 0.00 0.00 9.50 231.00 430.00 684.50 612.85 e 297.50 80.50 2.50 0.00 2348.35
1974 0.00 a 0.00 2.58 a 22.50 149.46 c 545.17 a 616.50 565.50 325.50 36.00 5.00 0.00 2268.22
1975 0.00 0.00 0.00 0.00 137.00 333.00 717.00 472.50 319.50 108.50 a 4.00 0.00 2091.50
1976 0.00 0.00 0.00 26.00 214.93 a 307.50 647.26 b 442.50 355.50 58.00 5.00 0.00 b 2056.69
1977 0.00 0.00 0.00 b 121.50 98.00 590.17 a 641.91 b 508.50 h 312.50 59.50 5.89 b 6.50 1835.98
1978 0.00 0.00 37.50 26.00 100.50 362.00 619.00 537.00 256.00 72.00 0.50 0.00 2010.50
1979 0.00 0.00 0.00 36.00 203.00 428.50 698.00 603.00 427.50 139.00 0.00 d 0.00 c 2535.00
1980 0.00 0.00 0.00 87.00 179.50 321.50 656.50 520.50 342.50 105.50 7.50 1.50 2222.00
1981 0.00 0.00 b 0.00 96.00 149.50 369.50 587.50 692.50 326.50 18.50 0.50 0.00 2240.50
1982 0.00 0.50 0.00 19.00 137.50 386.50 588.50 607.50 238.50 45.00 0.00 0.00 2023.00
1983 0.00 0.00 5.00 10.50 187.00 310.00 558.00 669.00 269.00 56.00 14.00 0.00 2078.50
1984 0.00 0.00 3.00 31.50 200.50 286.00 687.00 687.00 281.00 78.50 0.00 z 0.00 2254.50
1985 0.00 0.00 1.50 106.50 222.00 473.00 834.50 528.00 145.00 34.10 a 8.00 0.00 2352.60
1986 0.00 6.50 21.00 42.00 249.00 589.50 546.00 697.50 203.00 36.50 0.00 0.00 2391.00
1987 0.00 0.00 8.50 151.50 276.00 507.00 549.00 528.50 363.50 100.00 9.83 a 0.00 a 2493.83
1988 0.00 a 0.00 18.50 69.50 248.00 528.50 696.50 563.00 277.50 196.50 7.50 0.00 2605.50
1989 0.00 0.00 6.00 98.00 158.00 454.00 714.00 521.00 295.50 68.00 4.50 0.00 2319.00
1990 0.00 0.00 14.50 157.50 175.00 493.00 797.00 673.50 518.00 76.00 0.00 0.00 2904.50
1991 0.00 0.00 0.50 44.50 158.00 344.00 743.00 473.50 k 0.00 z 0.00 z 0.00 z 0.00 z 1290.00
1992 0.00 z 0.00 z 0.00 z 0.00 z 294.50 467.00 525.00 544.64 b 282.50 71.50 0.00 0.00 2185.14
1993 0.00 0.00 1.50 12.50 273.00 257.00 313.00 376.50 254.50 78.50 0.00 0.00 1566.50
1994 0.00 0.00 7.50 75.50 238.00 389.00 674.50 603.00 310.00 38.00 0.50 0.00 2336.00
1995 0.50 0.00 0.00 12.50 133.50 300.50 578.50 455.00 314.50 26.00 14.00 0.00 1835.00
1996 0.00 0.00 0.50 50.50 117.00 332.50 636.00 548.50 210.50 110.00 1.50 0.00 2007.00
1997 0.00 0.00 11.00 36.50 242.50 313.00 500.00 532.50 286.00 33.50 1.50 0.00 1956.50
1998 0.00 0.00 6.50 41.00 115.00 264.00 686.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1112.50
1999 0.00 c 0.00 i 3.10 a 12.93 a 128.13 a 341.25 b 543.57 b 519.00 193.39 b 0.00 z 3.00 0.00 c 1744.38
2000 0.00 g 0.00 e 1.11 c 76.11 c 199.36 b 414.83 a 585.90 a 545.08 a 234.60 e 33.07 a 0.00 l 0.00 h 2090.06
2001 0.00 j 0.00 l 18.37 d 81.92 d 235.17 b 362.68 b 560.00 633.50 347.31 d 73.07 c 1.03 a 0.00 g 2313.06
2002 0.00 0.00 0.00 37.50 169.98 a 470.19 d 727.47 a 425.65 e 263.50 23.80 c 0.00 k 1.00 2119.10
2003 1.00 0.00 21.50 24.50 202.69 e 417.00 727.31 e 603.90 e 312.00 113.50 o 0.00 l 0.00 2309.90
2004 0.00 0.00 16.50 i 47.00 141.16 c 408.50 640.00 555.50 219.23 d 58.50 h 0.00 j 0.50 f 2011.39
2005 0.00 0.00 e 0.00 j 35.50 175.50 264.50 637.00 584.00 193.20 e 39.00 j 0.00 h 0.00 1889.70
2006 0.00 i 0.00 z 2.98 e 35.00 213.00 439.50 759.50 499.00 198.50 g 18.50 q 0.00 q 0.00 l 1948.98
2007 0.00 d 0.00 e 15.50 h 43.00 g 237.09 d 451.50 812.00 565.50 206.00 g 0.00 z 0.00 k 0.50 k 2066.09
2008 0.00 l 0.00 h 2.00 f 23.00 191.00 331.50 623.00 553.00 231.00 0.00 z 9.50 h 0.00 j 1952.50
2009 0.00 h 0.00 m 1.00 h 32.00 f 197.50 g 381.00 634.00 552.50 371.40 e 19.00 m 2.00 g 0.00 i 1938.90
2010 0.00 i 0.00 e 2.38 e 11.00 m 40.00 h 355.00 579.00 498.50 225.50 g 10.50 z 3.00 t 0.00 1434.88
2011 0.00 h 1.22 e 11.00 f 1.50 w 15.00 q 110.00 n 421.00 h 500.50 g 205.50 n 7.50 w 0.00 k 0.00 n 1.22
2012 0.00 h 0.00 j 2.50 k 45.00 n 138.31 e 334.80 e 572.50 f 478.50 f 48.50 z 0.00 y 0.00 z 0.00 z 473.11
Period of Record Statistics
MEAN 0.13 0.33 5.07 52.35 184.97 395.39 658.25 585.92 276.22 61.35 3.21 0.30 2278.96
S.D. 0.55 1.22 7.57 42.77 73.69 90.21 89.75 98.37 87.88 40.37 5.78 1.12 276.77
SKEW 4.35 4.05 2.12 1.14 0.13 0.27 -0.57 -0.44 -0.05 0.83 2.42 4.19 -0.05
MAX 3.00 6.50 37.50 171.50 352.50 645.50 837.50 805.50 518.00 196.50 28.85 6.50 2904.50
MIN 0.00 0.00 0.00 0.00 7.00 229.50 313.00 281.58 44.00 0.00 0.00 0.00 1566.50
NO YRS 75 72 73 76 81 83 81 76 77 69 65 69 34