ST HELENS RFD, OREGON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(357466)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1976 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 74.41 b 73.10 64.97 56.67 46.74 63.18
1977 44.14 b 54.79 53.71 65.87 63.29 75.93 77.90 84.68 69.97 64.16 50.30 47.58 62.69
1978 46.23 ----- z 59.65 60.90 66.20 a 77.67 81.43 a 78.19 70.47 69.16 48.77 41.74 63.67
1979 37.52 46.39 60.84 61.47 70.77 76.30 82.77 79.35 ----- z ----- z 52.10 49.97 61.75
1980 41.45 51.11 a 54.08 e 63.18 b 63.96 c 67.78 g 81.76 f 77.03 b 76.07 a 68.50 e 52.27 49.43 c 59.71
1981 52.19 d 52.46 d 59.57 c 62.97 a 65.74 70.41 c 76.00 e 86.48 h 76.86 a 62.54 c 55.87 g 47.68 f 64.30
1982 43.84 50.11 55.84 59.40 70.16 77.07 76.68 79.48 75.03 64.00 50.70 46.92 e 62.44
1983 48.17 h 53.07 57.68 64.47 72.23 70.67 76.00 79.52 72.00 62.71 52.15 c 40.13 63.69
1984 49.45 52.03 59.03 58.53 66.71 72.93 82.77 82.65 75.23 59.29 51.63 42.32 62.72
1985 44.74 47.39 54.97 63.80 69.70 a 76.13 88.03 81.48 71.17 62.35 42.64 e 40.84 61.94
1986 50.42 52.18 62.52 61.53 68.61 79.63 75.84 86.74 ----- z 67.71 53.03 47.71 64.18
1987 45.45 53.64 58.87 66.33 72.68 79.77 77.45 84.61 80.30 73.19 55.97 44.58 66.07
1988 45.39 53.34 57.39 62.53 67.55 b 74.33 82.77 82.65 78.27 67.52 52.93 47.26 64.33
1989 47.61 44.11 51.90 66.67 68.68 76.57 76.65 76.87 81.20 65.23 55.33 47.03 63.15
1990 48.55 48.86 59.94 65.37 66.16 74.87 84.13 83.32 79.67 61.19 53.03 39.68 63.73
1991 47.35 58.00 56.61 62.63 65.26 70.90 83.55 82.61 82.00 69.19 54.24 a 47.58 64.99
1992 49.71 57.71 l 65.03 66.22 c 79.52 80.93 84.26 84.39 76.13 67.94 52.50 44.84 68.32
1993 43.55 50.68 58.81 60.60 73.97 72.43 73.52 81.00 80.77 67.84 48.07 46.16 63.12
1994 50.10 j 47.43 61.68 65.87 75.03 76.40 88.03 84.26 81.47 64.61 48.17 47.87 67.35
1995 50.68 55.96 59.84 63.47 75.81 78.07 85.16 82.42 81.73 64.16 57.73 47.23 66.85
1996 46.45 51.17 60.35 64.47 67.26 79.13 89.19 86.84 74.60 63.84 51.83 47.94 65.26
1997 47.32 54.82 55.74 63.23 76.94 75.13 82.00 g 87.00 78.25 n 64.19 58.20 46.81 62.94
1998 48.35 53.93 59.77 66.13 67.03 78.70 85.94 88.61 83.43 65.87 53.53 47.13 66.54
1999 49.06 50.50 55.94 67.17 69.32 73.27 83.10 85.26 85.29 i 68.65 e 55.30 50.13 64.34
2000 46.10 52.62 55.58 68.57 69.06 80.17 83.61 84.71 78.57 64.45 51.13 46.35 65.08
2001 48.55 53.89 59.10 62.57 77.73 a 74.70 81.81 85.00 79.70 64.58 54.50 48.61 65.89
2002 45.71 j 54.36 57.74 l 65.60 69.26 81.26 c 86.87 86.45 78.95 i 67.23 56.40 49.68 68.57
2003 51.97 54.11 56.88 f 61.13 72.13 82.37 89.35 86.71 c 80.48 e 66.96 c 55.21 p 47.19 d 69.24
2004 44.06 m 54.82 l 63.93 c 71.80 70.44 d 81.62 d 89.67 g 84.97 74.52 g 65.69 e 51.38 i 49.83 g 73.07
2005 ----- z 55.88 c 61.71 65.26 g 73.00 74.28 e 85.26 87.11 c 76.15 j 64.15 k 52.50 45.58 66.91
2006 51.00 e 49.79 d 55.42 66.20 ----- z 77.40 j 80.87 79.74 76.67 61.38 g 49.18 b 41.68 61.17
2007 41.63 a 46.71 54.87 57.04 f 67.29 70.61 b 79.19 75.63 a 70.90 a 60.33 a 50.90 43.71 c 60.16
2008 41.68 49.86 49.61 54.10 65.61 c 68.92 d 78.42 g 77.45 74.27 67.12 w 52.63 40.30 a 57.44
2009 43.16 48.36 50.53 a 57.63 67.87 a 70.07 a ----- z ----- z ----- z ----- z ----- z ----- z 56.27
2010 ----- z ----- z ----- z ----- z ----- z 66.00 e 74.54 e 78.58 e 69.13 61.87 48.53 45.19 63.41
2011 44.77 43.32 c 50.00 52.93 a 60.21 c 67.32 b 72.72 b 76.88 f 76.58 f 57.79 c 48.04 b 42.23 e 53.93
2012 44.67 d 47.42 e 48.33 d 57.69 d 64.46 e 66.19 i 74.48 h 79.27 i 74.58 k 60.92 g 51.71 b 43.78 d 51.15
2013 39.23 e 47.82 f 53.96 e 73.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.60
Period of Record Statistics
MEAN 46.20 51.20 57.14 63.06 69.40 75.29 81.51 82.42 76.64 65.09 52.20 45.64 64.32
S.D. 3.67 3.53 4.11 3.97 4.39 4.30 4.83 3.80 4.23 3.28 3.25 3.00 1.61
SKEW -0.37 -0.37 -0.31 -0.56 0.41 -0.29 -0.16 -0.37 -0.22 0.01 -0.49 -0.53 0.10
MAX 52.19 58.00 65.03 71.80 79.52 82.37 89.35 88.61 83.43 73.19 58.20 50.13 66.85
MIN 37.52 43.32 48.33 52.93 60.21 66.00 72.72 74.41 69.13 57.79 42.64 39.68 61.94
NO YRS 31 32 34 33 34 33 30 33 27 31 33 34 15