MONTEBELLO, CALIFORNIA

Monthly Total Heating Degree Days

(045790)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201102
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
1979 314.00 251.50 167.40 a 13.97 a 25.50 0.00 a 0.00 a 0.00 b 0.00 d 18.00 102.00 123.47 b 1015.83
1980 170.00 100.00 151.50 81.72 a 67.88 b 6.72 a 0.00 0.00 a 0.00 a 11.50 83.28 a 142.00 814.60
1981 180.83 a 125.42 d 188.67 b 64.82 b 10.50 0.00 0.00 0.00 0.00 a 35.65 a 85.34 a 186.00 877.24
1982 274.00 130.50 173.50 103.00 16.50 4.50 0.00 0.00 0.00 4.00 130.50 250.50 1087.00
1983 191.50 158.00 147.50 123.00 22.50 1.00 0.00 0.00 0.00 0.00 120.00 192.50 956.00
1984 157.58 a 0.00 z 54.00 71.50 11.00 0.00 0.00 0.00 0.00 9.50 123.00 254.00 680.58
1985 263.50 189.50 232.00 39.50 32.50 4.00 0.00 0.00 0.00 3.50 170.00 141.00 1075.50
1986 75.00 182.00 115.50 46.50 16.00 0.00 0.00 0.00 7.50 3.00 18.50 167.50 631.50
1987 246.00 174.00 149.50 21.50 18.50 0.00 0.00 0.00 0.00 0.00 71.50 324.00 1005.00
1988 223.50 106.00 72.50 59.50 0.00 z 6.50 0.00 0.00 1.50 2.00 95.00 247.50 814.00
1989 249.50 244.50 87.50 27.50 18.50 2.00 0.00 0.00 0.00 10.00 45.00 125.50 810.00
1990 193.50 240.00 149.00 18.50 15.50 1.00 0.00 0.00 0.00 0.00 48.00 252.00 917.50
1991 207.50 63.50 238.50 61.00 30.00 0.00 z 0.00 z 0.00 0.00 21.00 46.00 164.50 832.00
1992 168.00 125.50 123.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 z 55.00 270.50 743.00
1993 269.00 185.50 70.27 a 9.50 0.00 3.00 0.00 a 0.00 0.00 1.00 52.00 173.50 763.77
1994 0.00 z 195.00 67.50 69.50 31.00 0.00 0.00 0.00 0.00 0.00 174.00 188.00 725.00
1995 244.38 a 71.50 106.50 62.50 45.00 13.50 0.00 0.00 0.00 9.00 0.00 z 160.00 712.38
1996 0.00 z 135.50 94.00 18.50 0.00 0.00 0.00 0.00 0.00 28.50 67.00 133.00 476.50
1997 184.50 120.50 43.50 0.00 z 0.00 0.00 0.00 0.00 0.00 0.00 49.50 204.08 a 602.08
1998 179.00 221.50 105.00 135.50 40.50 3.50 0.00 0.00 0.00 4.13 a 103.45 a 220.50 1013.08
1999 119.50 j 120.00 f 200.93 d 167.00 19.50 f 16.15 d 0.00 c 0.00 c 0.00 b 0.00 a 45.50 f 128.59 d 512.67
2000 146.45 b 166.48 b 136.18 c 12.00 h 1.00 f 0.00 z 0.00 g 0.00 e 0.00 d 10.50 i 90.50 h 41.00 q 449.11
2001 206.50 f 262.35 e 94.00 i 67.50 j 0.00 f 0.00 d 0.00 p 0.00 o 0.00 l 3.50 m 54.50 p 0.00 z 262.35
2002 221.00 95.00 121.00 48.00 j 0.00 z 0.00 z 0.00 k 0.00 i 0.00 n 12.50 n 16.50 r 67.50 t 437.00
2003 25.50 j 83.00 l 55.00 j 107.40 e 10.00 m 0.00 n 0.00 m 0.00 h 0.00 j 0.00 m 11.50 y 38.50 z 107.40
2004 38.50 w 137.00 m 27.50 g 40.50 0.00 c 0.00 0.00 0.00 0.00 p 8.00 u 56.00 q 70.50 s 40.50
2005 133.50 n 59.50 q 77.50 e 23.00 l 6.50 k 0.00 l 0.00 k 0.00 k 1.00 n 3.50 k 8.00 v 77.00 l 77.50
2006 135.50 h 63.00 n 168.00 n 54.50 k 3.00 k 0.00 q 0.00 x 0.00 o 0.00 u 0.00 z 0.00 z 27.50 z 0.00
2007 145.00 q 62.50 r 18.00 q 7.50 y 0.00 w 0.50 s 0.00 o 0.00 o 0.00 x 0.00 u 12.00 x 0.00 z 0.00
2008 60.00 w 10.50 z 3.00 z 0.00 z 9.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2009 0.00 z 126.00 h 90.50 i 51.00 i 3.00 l 11.00 q 1.00 q 0.00 r 0.00 m 0.00 z 0.00 z 231.50 231.50
2010 112.50 i 47.00 r 114.00 100.00 22.50 g 24.00 g 0.60 e 0.00 l 0.00 g 11.50 v 0.00 z 0.00 z 214.60
2011 167.50 u 79.50 r 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
Period of Record Statistics
MEAN 207.94 161.08 127.46 62.76 20.07 2.81 0.03 0.00 0.41 8.04 86.27 194.55 913.92
S.D. 54.76 58.93 52.84 43.94 17.73 4.47 0.13 0.00 1.62 10.31 42.98 55.38 138.39
SKEW -0.27 0.15 0.44 0.62 0.92 1.88 4.36 0.00 4.12 1.42 0.58 0.51 -0.57
MAX 314.00 262.35 238.50 167.00 67.88 16.15 0.60 0.00 7.50 35.65 174.00 324.00 1087.00
MIN 75.00 63.50 43.50 1.00 0.00 0.00 0.00 0.00 0.00 0.00 18.50 123.47 631.50
NO YRS 20 22 25 23 20 22 22 23 22 20 19 22 12