MONTEBELLO, CALIFORNIA

Monthly Average Temperature (Degrees Fahrenheit)

(045790)

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.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
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 54.87 56.07 60.30 a 67.00 a 67.60 74.64 a 76.08 a 75.59 b 79.63 d 68.39 62.10 62.17 b 67.04
1980 59.56 62.60 60.11 64.79 a 63.79 b 71.40 a 77.34 76.63 a 72.17 a 70.45 63.03 a 61.15 66.92
1981 59.20 a 61.50 d 58.95 b 64.43 b 68.77 76.77 76.74 77.74 73.83 a 66.90 a 63.95 a 59.13 67.33
1982 56.19 60.80 59.56 62.92 66.94 67.15 75.73 77.84 76.00 70.97 60.98 56.92 66.00
1983 59.61 59.52 60.71 61.23 67.73 70.03 76.15 80.69 79.10 72.40 62.43 58.79 67.37
1984 60.47 a ----- z 64.16 65.12 73.06 72.35 79.84 79.00 82.42 68.63 61.18 56.81 69.37
1985 56.50 59.25 57.61 66.20 65.81 72.68 79.63 76.65 72.82 69.76 60.27 61.39 66.55
1986 64.40 59.86 62.73 66.00 68.05 72.68 74.56 77.47 69.75 69.81 66.10 59.73 67.59
1987 57.31 59.25 60.47 68.55 68.94 71.57 72.15 74.60 75.97 72.40 63.82 54.68 66.64
1988 58.21 62.17 65.65 65.58 ----- z 70.33 77.29 74.92 74.35 70.71 62.58 57.50 67.21
1989 57.66 57.30 63.00 69.22 67.05 70.97 76.42 74.39 75.50 68.26 65.32 61.47 67.21
1990 58.79 56.80 60.94 66.42 67.76 75.18 79.92 77.44 76.90 73.08 65.10 57.39 67.98
1991 58.44 63.66 57.34 65.03 66.26 ----- z ----- z 75.53 75.25 73.23 66.35 59.82 66.09
1992 59.95 61.53 61.13 69.87 70.37 71.58 77.13 80.58 76.82 ----- z 65.10 56.27 68.21
1993 56.42 58.50 64.00 a 67.72 70.42 73.85 74.40 a 75.77 74.70 71.32 64.32 59.53 67.58
1994 ----- z 58.04 64.44 64.05 66.03 75.22 74.82 80.52 76.42 69.42 59.50 58.97 67.95
1995 57.35 a 64.98 62.13 64.92 65.05 69.57 76.29 77.74 77.07 69.92 ----- z 59.87 67.72
1996 ----- z 60.91 62.69 68.28 70.39 73.53 77.15 78.08 74.72 68.24 64.90 60.89 69.07
1997 59.19 61.02 66.40 ----- z 74.05 73.10 75.05 78.77 80.38 71.52 66.38 58.63 a 69.50
1998 59.26 57.09 62.40 62.30 64.44 69.75 77.44 80.19 73.73 68.18 a 61.60 a 58.16 66.21
1999 59.57 j 59.64 f 58.52 d 61.53 66.18 f 70.04 d 75.45 c 75.55 c 72.98 b 74.98 a 63.79 f 61.00 d 68.76
2000 60.81 b 59.63 b 61.04 c 66.68 h 70.80 f ----- z 75.67 g 78.73 e 76.04 d 67.91 i 61.11 h 63.54 q 67.25
2001 56.96 f 56.65 e 60.82 i 63.80 j 69.82 f 74.71 d 75.73 p 75.84 o 75.00 l 70.72 m 61.86 p ----- z 65.68
2002 57.98 62.98 61.21 63.25 j ----- z ----- z 76.88 k 75.00 i 77.19 n 66.26 n 65.04 r 58.86 t 60.73
2003 65.12 j 60.50 l 63.33 j 61.96 e 68.83 m 70.47 n 79.33 m 79.50 h 76.32 j 75.19 m 64.90 y 57.30 z 61.96
2004 61.19 w 56.44 m 67.12 g 66.92 72.21 c 72.65 76.27 76.13 79.82 p 68.25 u 60.81 q 59.42 s 72.84
2005 57.21 n 59.59 q 63.25 e 65.97 l 69.62 k 70.67 l 77.93 k 78.32 k 72.12 n 70.85 k 66.19 v 60.97 l 63.25
2006 59.78 h 61.29 n 55.12 n 63.61 k 69.30 k 76.54 q 82.00 x 77.56 o 77.44 u 74.50 z ----- z 55.83 z 9999.00
2007 54.71 q 58.85 r 66.36 q 63.80 y 68.88 w 73.27 s 77.72 o 78.81 o 80.33 x 72.40 u 66.33 x ----- z 9999.00
2008 57.50 w 59.75 z 67.50 z 73.50 z 75.88 z ----- z 76.25 z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 ----- z 59.22 h 62.00 i 66.17 i 70.32 l 66.73 q 77.18 q 77.15 r 78.29 m ----- z ----- z 57.74 57.74
2010 60.43 i 60.55 r 62.50 62.13 65.79 g 68.59 g 73.94 e 73.53 l 74.24 g 68.50 v ----- z ----- z 66.19
2011 48.25 u 57.05 r ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 58.61 60.01 61.65 65.31 68.24 72.26 76.35 77.42 75.75 70.43 63.42 59.00 67.03
S.D. 2.06 2.45 2.33 2.51 2.82 2.30 1.90 1.96 2.88 2.08 2.11 1.94 0.59
SKEW 0.77 0.16 0.06 0.02 0.46 -0.09 0.13 0.21 0.34 0.35 -0.23 -0.30 -0.34
MAX 64.40 64.98 66.40 69.87 74.05 76.77 79.92 80.69 82.42 74.98 66.38 62.17 67.98
MIN 54.87 56.07 57.34 61.23 63.79 67.15 72.15 74.39 69.75 66.90 59.50 54.68 66.00
NO YRS 20 22 25 23 20 22 22 23 22 20 19 22 12