ICE HARBOR DAM, WASHINGTON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(453883)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201301
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
1957 ----- z ----- z 59.30 u 69.04 c 77.32 85.13 89.32 86.68 84.13 61.62 b 52.17 49.52 72.77
1958 44.71 54.64 55.65 63.17 81.87 87.97 96.00 96.19 79.77 69.81 51.80 42.52 68.67
1959 42.77 45.89 59.29 67.00 70.90 83.23 94.10 87.00 75.80 66.16 48.57 40.39 65.09
1960 31.00 48.62 56.68 66.30 71.84 85.80 99.00 86.58 82.70 67.74 53.17 35.77 65.43
1961 41.94 53.63 a 57.03 64.53 72.71 90.70 95.06 96.55 77.47 64.90 46.13 42.71 66.95
1962 40.29 47.18 52.93 a 69.86 a 67.81 82.17 90.71 86.77 81.87 64.32 53.97 44.87 65.23
1963 36.87 46.04 58.65 61.50 73.77 82.53 86.16 90.48 86.10 70.87 54.33 37.84 65.43
1964 47.45 52.55 55.58 63.83 72.16 80.57 90.97 85.48 78.37 67.26 47.10 38.32 64.97
1965 41.16 51.89 54.74 68.47 73.16 80.10 89.55 87.55 76.47 71.81 53.57 42.87 65.94
1966 44.23 50.00 59.00 67.53 77.45 79.43 86.84 89.52 82.50 67.45 54.77 47.97 67.22
1967 51.26 55.46 57.42 60.73 73.39 84.20 92.81 96.32 87.13 69.10 52.27 43.90 68.67
1968 45.71 52.76 61.58 63.67 74.19 82.23 93.32 84.61 79.73 64.42 50.83 41.42 66.21
1969 29.26 41.29 57.29 63.90 76.68 85.50 88.74 87.16 79.80 63.16 53.47 41.23 63.96
1970 39.48 49.18 56.58 60.63 73.87 85.83 91.42 90.74 74.93 65.19 51.33 44.19 65.28
1971 47.94 51.79 53.26 63.83 74.94 74.97 90.52 94.65 74.90 65.32 52.50 44.52 65.76
1972 43.19 45.59 59.35 62.77 75.39 81.23 88.10 ----- z 76.83 66.39 50.03 37.48 62.40
1973 39.55 47.32 59.19 66.63 76.48 81.50 90.71 88.35 78.27 65.32 48.27 46.39 65.67
1974 36.45 52.89 56.97 63.17 69.94 84.17 86.55 87.77 83.03 67.90 52.27 48.13 65.77
1975 42.55 44.25 53.87 59.60 72.19 78.37 91.58 84.26 82.47 64.97 51.90 a 44.71 64.23
1976 44.97 49.07 55.42 63.40 75.10 78.20 87.52 83.19 83.00 67.77 51.83 41.68 65.10
1977 31.26 50.68 55.03 72.00 68.94 85.53 86.90 91.65 73.87 65.90 50.70 44.00 64.70
1978 38.87 47.39 59.67 a 62.97 70.90 82.53 88.19 85.23 a 75.20 68.03 43.93 40.58 63.63
1979 25.37 d 45.21 59.26 64.53 ----- z 82.90 ----- z 87.77 82.87 69.65 45.34 a 45.57 a 60.85
1980 ----- z ----- z 55.52 68.67 71.71 75.17 87.58 84.00 79.27 64.68 50.93 45.19 68.27
1981 43.10 47.93 60.32 64.97 71.77 75.20 86.35 92.19 80.48 a 65.17 a 54.17 43.55 65.43
1982 40.26 49.89 57.10 61.93 72.35 82.33 87.00 87.45 77.50 63.97 46.87 42.58 64.10
1983 47.45 51.07 59.90 65.30 76.39 c 78.87 84.00 87.74 76.27 66.26 54.90 31.84 65.00
1984 41.68 49.07 59.00 63.00 ----- z 77.33 89.26 88.87 76.00 64.16 49.33 36.87 63.14
1985 31.68 42.57 57.19 68.63 75.84 83.07 94.65 ----- z 72.67 64.87 ----- z 27.03 a 61.82
1986 41.19 47.96 60.32 64.50 73.10 86.07 83.58 94.31 o 68.38 q 68.87 51.97 38.45 61.60
1987 38.74 49.79 58.97 70.63 77.35 84.10 86.29 87.97 84.53 70.10 54.60 40.97 67.00
1988 40.13 52.34 58.26 67.17 72.74 78.77 88.52 88.23 79.33 72.87 55.13 40.39 66.16
1989 45.97 34.89 54.42 67.40 71.77 82.70 87.23 84.32 81.30 66.26 54.73 39.94 64.24
1990 47.32 47.68 57.81 j 69.47 70.77 79.37 90.97 87.84 85.87 63.94 56.27 35.48 66.82
1991 37.48 55.11 54.97 65.27 69.29 75.23 88.52 90.35 ----- z 67.87 49.23 44.35 63.43
1992 45.90 50.48 ----- z 68.30 79.32 86.50 85.84 89.10 76.33 67.45 48.93 40.90 67.19
1993 30.10 37.43 49.50 k 64.00 77.23 ----- z 80.13 84.90 80.83 68.39 47.00 42.45 61.25
1994 46.81 44.29 61.52 68.17 ----- z 80.27 92.23 90.10 83.27 65.39 49.73 44.35 66.01
1995 40.26 52.82 57.39 63.77 73.35 76.73 86.52 83.84 81.63 62.94 54.10 40.74 64.51
1996 40.84 42.10 55.23 65.37 68.87 79.73 90.35 88.13 76.73 65.77 49.50 39.55 63.51
1997 41.90 48.32 57.74 63.07 74.94 77.63 86.84 89.35 79.47 65.23 51.57 43.87 64.99
1998 45.00 51.64 58.61 64.47 71.16 80.47 92.77 89.94 83.90 65.74 54.57 44.77 66.92
1999 48.52 52.04 57.65 64.43 69.97 78.70 85.26 87.45 80.43 66.48 55.53 47.26 66.14
2000 43.74 47.69 56.39 67.93 72.81 80.13 87.58 88.77 76.10 63.68 45.07 37.42 63.94
2001 38.65 45.61 59.61 62.63 75.74 77.57 87.26 89.97 83.20 65.65 52.90 44.81 65.30
2002 45.81 49.96 52.65 65.27 70.68 81.73 90.10 85.97 79.13 64.97 50.97 46.16 65.28
2003 46.48 50.61 60.39 64.53 72.13 83.70 92.58 90.03 82.20 70.68 49.83 42.32 67.12
2004 34.84 45.48 64.26 68.03 72.52 81.23 90.32 88.19 77.33 67.29 51.90 45.06 65.54
2005 39.00 51.71 61.97 ----- z 74.55 78.47 89.77 90.35 77.60 66.65 49.20 37.94 65.20
2006 50.32 i 47.61 56.45 64.83 74.00 80.17 92.39 87.55 79.53 65.65 52.03 39.06 67.21
2007 38.97 46.29 59.35 64.33 75.19 80.73 91.16 86.94 79.63 64.03 51.93 44.16 65.23
2008 39.52 50.10 55.39 61.07 73.06 77.83 89.35 86.74 78.77 65.35 52.70 38.45 64.03
2009 42.32 44.18 52.26 65.00 73.94 81.10 90.58 88.94 82.40 61.61 53.47 35.90 64.31
2010 45.68 50.89 60.35 62.40 68.87 76.47 87.00 86.74 76.73 65.16 49.40 41.71 64.28
2011 43.26 46.57 55.94 59.63 68.35 76.13 83.68 89.16 82.57 65.26 53.53 40.94 63.75
2012 44.68 46.83 57.35 65.77 71.87 75.60 87.90 89.23 ----- z 65.81 ----- z ----- z 67.23
2013 37.39 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 37.39
Period of Record Statistics
MEAN 41.13 48.41 57.52 65.07 73.26 80.98 89.23 88.39 79.78 66.31 51.34 41.66 65.38
S.D. 5.37 4.11 2.57 2.81 2.90 3.57 3.39 2.99 3.36 2.37 2.89 4.11 1.24
SKEW -0.83 -0.90 0.07 0.26 0.42 0.29 0.22 0.88 0.07 0.63 -0.62 -0.92 0.78
MAX 51.26 55.46 64.26 72.00 81.87 90.70 99.00 96.55 87.13 72.87 56.27 49.52 68.67
MIN 25.37 34.89 52.26 59.60 67.81 74.97 80.13 83.19 72.67 61.61 43.93 27.03 63.51
NO YRS 54 54 52 55 53 55 55 53 53 56 54 55 41