MAUNA LOA SLOPE OBS, HAWAII

Monthly Total Growing Degree Days

(516198)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1955 16.10 e 0.50 13.95 a 93.75 b 138.50 245.17 a 160.17 a 182.38 a 185.89 b 151.00 59.00 58.00 1304.41
1956 44.29 c 2.00 29.00 86.11 c 0.00 z 192.86 b 65.50 k 155.00 178.50 148.50 117.41 a 99.00 1052.67
1957 24.80 a 0.56 c 67.50 110.69 a 143.00 h 190.50 f 189.00 i 213.38 a 229.00 212.00 154.50 70.55 b 1082.98
1958 114.50 165.50 77.00 191.00 263.00 322.50 237.00 237.00 264.50 223.50 177.50 94.50 2367.50
1959 122.00 58.00 165.50 208.00 135.50 m 186.50 m 294.50 a 222.50 219.50 244.00 142.20 e 86.50 1762.70
1960 88.50 87.00 37.50 75.58 d 202.07 d 220.00 225.00 263.50 268.00 160.50 109.00 63.00 1799.65
1961 87.50 84.52 a 116.50 140.00 117.50 274.00 249.00 251.50 192.41 a 131.50 65.00 43.00 1752.43
1962 54.00 33.00 26.00 103.00 90.00 207.00 254.50 131.00 o 211.67 c 214.00 122.00 68.00 j 1315.17
1963 42.22 b 108.00 27.50 72.00 45.50 155.00 156.00 236.50 227.50 187.50 112.00 145.70 a 1515.42
1964 55.80 a 44.50 20.50 67.00 118.00 264.00 199.00 226.50 197.50 164.50 59.00 64.50 1480.80
1965 81.00 3.50 38.00 85.50 120.00 219.00 187.00 200.50 178.50 183.00 126.50 73.00 1495.50
1966 108.00 52.50 132.00 92.50 196.50 351.50 311.00 272.50 228.00 182.50 94.50 63.00 2084.50
1967 43.50 95.50 55.00 56.00 106.50 203.00 241.50 222.00 228.50 168.00 74.00 53.50 1547.00
1968 74.50 84.00 108.00 53.00 204.00 230.50 233.00 230.50 154.50 192.50 204.00 73.00 1841.50
1969 37.09 c 61.00 42.37 a 108.00 221.50 283.00 204.50 f 197.00 262.50 213.50 144.00 121.00 1690.96
1970 72.00 75.00 68.50 28.00 122.00 271.50 191.00 221.00 196.50 174.00 69.50 23.00 1512.00
1971 11.50 52.50 80.50 41.00 87.50 216.50 214.50 155.00 145.00 194.50 68.50 23.00 1290.00
1972 16.50 17.00 109.50 34.00 84.00 217.50 212.00 213.00 193.00 177.50 166.50 128.50 1569.00
1973 156.00 83.00 8.00 153.50 130.50 345.00 246.50 255.00 257.00 214.79 c 74.50 53.00 1976.79
1974 64.50 31.00 58.12 c 0.00 z 80.50 149.00 153.00 218.50 166.00 136.00 47.00 44.29 c 1147.91
1975 13.50 5.50 i 55.00 84.00 137.50 232.00 149.50 183.00 199.50 170.50 98.00 13.50 1336.00
1976 4.50 19.50 0.00 30.50 80.00 221.50 204.50 203.00 132.00 140.00 0.00 z 65.50 1101.00
1977 139.50 110.44 a 57.00 62.50 155.57 d 200.00 248.50 240.50 213.00 179.00 146.00 119.50 1871.52
1978 94.00 92.00 113.00 70.50 178.00 171.50 178.50 193.50 169.50 155.50 35.50 39.00 1490.50
1979 37.09 c 5.00 g 32.00 105.00 b 188.00 206.00 231.50 233.00 221.50 181.35 a 150.00 d 161.00 1746.44
1980 63.00 j 163.26 b 23.50 l 128.50 170.00 244.50 256.00 244.00 217.00 212.50 207.00 186.00 2028.76
1981 163.00 94.37 a 103.00 115.50 276.50 278.50 315.00 253.50 219.00 192.00 190.50 151.50 2352.37
1982 76.00 80.64 c 35.00 121.50 194.50 271.00 256.00 214.50 169.50 246.50 244.00 150.00 2059.14
1983 235.00 158.50 227.69 b 108.50 206.50 244.00 330.50 295.50 222.32 b 187.00 235.56 c 116.50 2567.57
1984 51.15 a 55.00 175.48 c 142.50 b 183.50 338.50 229.83 b 302.54 d 209.50 247.00 164.50 99.00 2198.50
1985 146.00 78.00 56.50 77.00 165.50 252.00 273.50 271.00 264.50 235.50 191.00 164.50 2175.00
1986 241.00 183.04 a 193.50 124.50 246.50 306.50 282.50 331.00 253.00 255.00 201.00 224.75 a 2842.29
1987 127.50 0.00 z 124.00 199.00 179.50 191.50 253.00 306.00 243.00 269.50 164.00 139.50 2196.50
1988 113.00 51.00 94.03 a 117.50 222.00 300.50 243.00 279.50 279.00 e 191.00 126.35 d 73.50 2090.38
1989 13.50 27.00 82.00 28.50 78.50 239.50 233.50 265.00 259.00 195.82 a 178.00 116.77 a 1717.08
1990 104.00 58.59 a 123.00 199.29 b 240.00 324.00 182.38 a 274.50 192.32 b 194.00 169.50 80.50 2142.08
1991 124.53 b 122.64 c 59.00 153.00 230.00 224.00 336.50 228.50 254.50 251.00 235.00 130.50 2349.17
1992 166.50 106.50 161.50 214.50 274.50 348.50 264.50 246.50 166.00 i 183.00 i 129.50 k 86.50 i 1783.00
1993 43.00 m 69.50 h 80.50 h 170.50 h 126.50 k 261.00 h 167.50 k 173.50 l 140.50 h 141.50 j 101.00 j 108.50 j 0.00
1994 55.00 k 41.00 i 101.50 h 128.50 i 155.00 j 194.50 h 188.50 k 209.00 h 149.50 j 159.50 k 99.00 j 148.00 j 0.00
1995 143.50 k 49.50 i 126.50 j 135.50 j 174.00 i 264.00 h 196.50 k 197.00 h 223.50 j 177.00 j 100.50 j 111.50 k 0.00
1996 45.00 l 49.00 i 36.50 k 155.00 h 218.00 i 161.50 j 192.00 h 206.50 i 186.50 j 174.50 i 106.00 k 77.50 j 0.00
1997 92.00 j 53.00 j 26.50 j 100.50 h 133.50 j 185.00 i 218.50 i 167.50 m 157.00 i 174.00 i 73.00 m 105.50 j 0.00
1998 149.50 k 136.00 i 136.50 i 126.00 h 142.00 k 251.50 h 198.50 i 172.00 j 167.00 i 161.00 j 115.00 j 101.50 i 0.00
1999 54.50 l 38.50 i 63.50 h 42.50 h 144.50 k 221.00 h 200.00 j 220.50 i 155.00 i 173.50 k 101.50 j 49.50 k 0.00
2000 19.00 k 81.50 i 77.00 h 115.00 j 184.00 i 209.00 h 180.50 k 214.50 h 168.50 j 125.50 j 63.00 k 89.00 k 0.00
2001 117.50 j 36.50 i 59.50 i 79.50 i 136.00 i 142.50 i 184.00 j 211.50 h 167.50 k 161.50 i 151.50 j 102.50 l 0.00
2002 90.50 j 49.00 k 29.50 j 211.00 112.50 i 201.50 j 238.50 i 217.00 i 187.50 j 166.00 i 186.00 k 119.50 j 211.00
2003 140.00 k 118.00 i 129.00 j 92.00 h 119.50 i 178.00 i 207.50 i 199.00 j 180.00 i 207.50 i 139.00 l 99.00 j 0.00
2004 82.50 l 103.50 j 47.50 h 58.50 h 115.00 k 193.00 i 175.00 k 220.50 i 152.00 i 96.50 k 84.00 k 82.00 j 0.00
2005 65.50 m 25.50 i 111.00 h 125.00 i 156.50 j 194.00 h 176.50 k 204.00 h 185.00 i 157.50 k 104.00 j 100.00 j 0.00
2006 59.50 k 26.50 i 33.00 h 87.50 j 139.50 i 236.00 i 188.00 k 187.50 h 179.50 j 148.50 i 106.00 j 126.00 k 0.00
2007 116.00 k 61.50 k 86.00 o 96.00 m 174.50 i 195.50 i 195.50 j 172.50 j 114.00 l 182.50 h 77.00 j 34.00 k 0.00
2008 27.50 m 16.50 i 72.00 j 50.00 i 110.50 k 167.00 i 117.00 i 160.50 j 162.00 i 176.50 i 77.00 l 83.00 j 0.00
2009 30.50 l 19.00 i 7.00 i 65.00 h 152.00 k 209.50 h 168.00 i 176.00 j 215.50 i 159.50 i 69.50 k 83.50 i 0.00
2010 130.00 l 79.50 i 84.50 h 94.00 h 184.50 k 214.00 i 229.00 k 229.50 i 195.50 i 114.00 j 82.50 j 43.50 j 0.00
2011 32.00 k 42.50 i 86.00 h 81.00 i 69.00 j 146.00 h 169.50 k 199.50 h 161.50 i 160.50 j 34.50 j 24.50 j 0.00
2012 47.50 k 44.50 i 36.00 j 65.00 i 100.50 i 117.50 l 166.50 l 154.00 j 135.50 k 200.00 h 88.00 k 66.50 m 0.00
2013 45.00 j 27.00 i 19.00 s 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 85.52 72.54 80.34 107.68 163.83 248.92 235.24 236.17 213.57 193.96 136.74 94.77 1899.70
S.D. 59.49 48.26 55.20 53.96 62.66 54.48 48.91 40.00 37.36 35.53 57.53 49.61 405.93
SKEW 0.79 0.48 0.80 0.51 0.04 0.31 0.14 0.15 -0.18 0.29 0.04 0.53 0.40
MAX 241.00 183.04 227.69 214.50 276.50 351.50 336.50 331.00 279.00 269.50 244.00 224.75 2842.29
MIN 4.50 0.50 0.00 28.00 45.50 149.00 149.50 155.00 132.00 131.50 35.50 13.50 1290.00
NO YRS 37 35 37 38 35 36 35 37 37 37 36 36 26