MONTEBELLO, CALIFORNIA

Monthly Average Maximum 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 64.23 67.36 70.84 79.90 a 79.74 88.37 89.27 a 87.45 b 94.15 d 80.03 74.40 75.28 b 79.25
1980 68.23 73.14 71.84 78.52 a 75.03 b 84.79 a 91.87 89.50 a 85.66 a 84.68 77.48 a 75.45 79.68
1981 71.57 a 76.04 c 71.24 b 77.66 a 81.87 91.57 91.58 93.58 88.24 a 80.57 a 75.79 a 70.94 80.89
1982 66.90 70.71 69.45 74.47 75.61 76.77 88.61 89.87 86.80 83.81 71.73 68.39 76.93
1983 69.81 69.29 69.81 71.40 78.55 78.20 87.48 91.94 89.37 82.45 71.80 66.94 77.25
1984 72.90 a ----- z 76.81 76.70 87.00 82.87 92.35 89.68 94.73 79.58 72.20 65.65 80.95
1985 67.71 70.57 69.23 78.13 76.16 85.60 91.97 89.65 83.87 82.23 70.63 73.84 78.30
1986 74.68 69.82 73.26 77.83 79.26 83.50 86.23 90.52 80.10 81.87 79.27 72.19 79.04
1987 68.68 70.71 71.68 82.40 79.00 82.00 83.00 86.39 88.07 82.65 74.27 65.61 77.87
1988 69.81 75.86 78.61 77.70 ----- z 82.60 89.13 85.58 85.40 81.97 74.17 69.71 79.14
1989 69.48 68.36 74.77 81.47 78.00 80.73 88.87 85.77 88.20 79.74 79.17 75.94 79.21
1990 72.13 68.46 72.39 76.93 79.03 87.97 92.03 88.19 89.07 85.97 79.13 70.19 80.12
1991 69.87 76.89 67.90 77.13 77.03 ----- z ----- z 87.13 87.23 85.61 78.97 70.23 77.80
1992 72.13 72.00 68.84 81.80 80.26 83.30 87.87 92.68 90.43 ----- z 77.47 66.52 79.39
1993 65.55 67.07 75.97 81.13 82.19 85.43 83.84 86.87 86.60 82.94 75.53 71.68 78.73
1994 ----- z 69.29 75.35 74.67 75.71 87.90 86.10 93.06 89.30 80.84 71.27 70.39 79.44
1995 65.29 75.86 72.03 77.13 74.45 80.93 89.32 91.39 90.03 82.42 ----- z 70.26 79.01
1996 ----- z 70.17 73.84 82.00 81.58 85.50 89.94 90.77 86.37 79.74 76.83 73.13 80.90
1997 68.23 73.11 79.29 ----- z 85.26 82.30 85.65 90.97 93.00 83.55 78.13 70.45 80.90
1998 69.19 66.57 73.32 73.93 74.03 80.60 89.84 93.35 83.23 81.06 74.07 a 71.52 77.56
1999 71.95 j 71.07 69.48 72.53 76.81 81.30 87.77 89.10 84.73 90.50 a 75.63 75.35 79.48
2000 71.32 70.10 72.19 81.20 82.94 ----- z 88.58 91.29 89.37 78.68 i 74.53 76.14 q 80.17
2001 69.13 a 66.86 70.05 i 76.10 j 81.32 86.53 86.56 o 87.85 k 88.44 l 83.28 m 73.50 p ----- z 75.96
2002 70.26 77.07 73.26 73.40 j ----- z ----- z 90.20 k 87.32 i 92.88 n 76.35 n 77.50 r 71.92 s 73.53
2003 80.19 j 71.79 i 76.52 j 75.20 e 81.55 k 80.69 n 91.28 m 94.39 h 89.80 j 91.28 m 82.40 y 70.40 z 75.20
2004 75.50 w 67.12 m 80.54 g 78.77 85.32 c 83.20 88.68 87.94 92.61 l 80.67 s 74.69 q 74.75 s 84.78
2005 68.50 m 71.64 q 75.42 e 78.90 j 82.45 k 81.95 k 90.70 k 91.95 k 86.88 m 84.50 k 81.00 v 74.32 l 75.42
2006 73.70 h 76.00 n 65.71 n 76.11 k 81.25 k 89.15 q 97.09 t 90.62 o 91.78 u 75.33 z ----- z 70.33 z 9999.00
2007 68.36 q 72.90 r 83.00 q 80.60 y 84.50 w 88.09 s 92.62 o 95.31 o 96.33 x 90.20 u 84.83 x ----- z 9999.00
2008 71.50 w 77.50 z 85.80 z 101.00 z 93.50 z ----- z 93.00 z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 ----- z 73.14 g 76.14 i 81.00 h 84.74 h 80.57 p 92.36 q 91.92 r 92.06 m ----- z ----- z 68.16 68.16
2010 71.39 h 71.20 r 75.65 73.13 77.50 g 81.91 g 85.54 e 87.47 l 88.74 g 79.00 v ----- z ----- z 78.11
2011 66.20 p 71.20 r ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 69.38 71.15 72.90 77.57 79.40 83.73 88.50 89.68 87.91 82.61 75.36 70.81 78.74
S.D. 2.60 3.31 3.04 3.17 3.62 3.49 2.59 2.44 3.50 2.64 2.80 3.15 1.20
SKEW -0.11 0.49 0.34 -0.18 0.41 0.20 -0.33 -0.08 0.02 1.34 -0.11 0.02 0.04
MAX 74.68 77.07 79.29 82.40 87.00 91.57 92.35 93.58 94.73 90.50 79.27 75.94 80.89
MIN 64.23 66.57 67.90 71.40 74.03 76.77 83.00 85.58 80.10 79.58 70.63 65.61 76.93
NO YRS 21 23 25 24 23 22 23 23 22 20 21 22 12