ST HELENS RFD, OREGON

Monthly Extreme 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 84.00 b 88.00 81.00 68.00 57.00 88.00
1977 54.00 b 69.00 62.00 80.00 76.00 91.00 92.00 104.00 84.00 75.00 61.00 59.00 104.00
1978 58.00 ----- z 72.00 73.00 84.00 a 92.00 98.00 a 102.00 79.00 81.00 64.00 51.00 102.00
1979 51.00 56.00 75.00 81.00 87.00 91.00 103.00 89.00 ----- z ----- z 67.00 56.00 103.00
1980 53.00 60.00 a 67.00 e 82.00 b 78.00 c 84.00 g 99.00 f 95.00 b 90.00 a 89.00 e 69.00 62.00 c 99.00
1981 59.00 d 66.00 d 69.00 c 82.00 a 84.00 84.00 c 92.00 e 107.00 h 99.00 a 75.00 c 65.00 g 56.00 f 107.00
1982 62.00 62.00 68.00 79.00 84.00 100.00 89.00 98.00 92.00 76.00 65.00 56.00 e 100.00
1983 56.00 h 61.00 68.00 80.00 102.00 86.00 94.00 90.00 82.00 70.00 62.00 c 52.00 102.00
1984 60.00 60.00 68.00 82.00 88.00 88.00 96.00 99.00 85.00 82.00 61.00 51.00 99.00
1985 53.00 61.00 68.00 79.00 87.00 a 97.00 100.00 94.00 83.00 77.00 62.00 e 50.00 100.00
1986 59.00 69.00 71.00 79.00 91.00 95.00 88.00 100.00 ----- z 76.00 65.00 52.00 100.00
1987 51.00 62.00 77.00 87.00 93.00 94.00 92.00 103.00 100.00 94.00 71.00 58.00 103.00
1988 55.00 69.00 70.00 82.00 92.00 b 93.00 101.00 100.00 106.00 91.00 64.00 60.00 106.00
1989 56.00 55.00 63.00 82.00 80.00 96.00 89.00 88.00 96.00 79.00 64.00 59.00 96.00
1990 57.00 67.00 73.00 82.00 89.00 97.00 100.00 100.00 95.00 72.00 63.00 53.00 100.00
1991 60.00 71.00 71.00 80.00 78.00 84.00 103.00 92.00 97.00 86.00 62.00 a 55.00 103.00
1992 59.00 66.00 l 74.00 80.00 c 97.00 100.00 103.00 102.00 86.00 78.00 64.00 54.00 103.00
1993 56.00 61.00 67.00 66.00 89.00 86.00 87.00 99.00 94.00 86.00 62.00 59.00 99.00
1994 57.00 j 59.00 82.00 78.00 90.00 88.00 104.00 95.00 95.00 78.00 55.00 60.00 104.00
1995 63.00 66.00 74.00 82.00 90.00 98.00 101.00 94.00 94.00 74.00 69.00 60.00 101.00
1996 55.00 68.00 74.00 84.00 84.00 93.00 104.00 100.00 88.00 84.00 63.00 53.00 104.00
1997 59.00 68.00 73.00 74.00 95.00 84.00 91.00 g 97.00 90.00 n 74.00 70.00 54.00 97.00
1998 62.00 63.00 73.00 89.00 88.00 92.00 104.00 102.00 97.00 79.00 62.00 61.00 104.00
1999 56.00 56.00 72.00 83.00 94.00 89.00 94.00 100.00 100.00 i 82.00 e 64.00 57.00 100.00
2000 54.00 62.00 75.00 81.00 82.00 102.00 96.00 97.00 90.00 78.00 62.00 54.00 102.00
2001 56.00 64.00 75.00 85.00 98.00 a 94.00 95.00 103.00 89.00 82.00 65.00 54.00 103.00
2002 52.00 j 66.00 67.00 l 81.00 85.00 104.00 c 104.00 105.00 93.00 i 80.00 66.00 59.00 105.00
2003 61.00 60.00 71.00 f 74.00 92.00 102.00 102.00 98.00 c 98.00 e 82.00 c 62.00 p 57.00 d 102.00
2004 55.00 m 62.00 l 80.00 c 90.00 85.00 d 96.00 d 106.00 g 103.00 85.00 g 80.00 e 59.00 i 60.00 g 106.00
2005 ----- z 68.00 c 78.00 78.00 g 100.00 86.00 e 96.00 99.00 c 88.00 j 71.00 k 60.00 56.00 100.00
2006 58.00 e 58.00 d 64.00 82.00 ----- z 99.00 j 105.00 94.00 97.00 77.00 g 61.00 b 50.00 105.00
2007 53.00 a 56.00 70.00 79.00 f 91.00 87.00 b 96.00 89.00 a 88.00 a 88.00 a 65.00 60.00 c 96.00
2008 54.00 63.00 62.00 80.00 96.00 c 99.00 d 90.00 g 99.00 92.00 77.00 w 60.00 53.00 a 99.00
2009 53.00 58.00 58.00 a 76.00 85.00 a 83.00 a ----- z ----- z ----- z ----- z ----- z ----- z 85.00
2010 ----- z ----- z ----- z ----- z ----- z 81.00 e 95.00 e 97.00 e 86.00 78.00 72.00 54.00 97.00
2011 56.00 56.00 c 57.00 69.00 a 72.00 c 83.00 b 85.00 b 91.00 f 90.00 f 64.00 c 56.00 b 53.00 e 91.00
2012 59.00 d 57.00 e 64.00 d 72.00 d 83.00 e 80.00 i 83.00 h 96.00 i 92.00 k 80.00 g 63.00 b 54.00 d 96.00
2013 51.00 e 55.00 f 73.00 e 73.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 73.00
Period of Record Statistics
MEAN 56.55 62.41 70.21 79.88 87.91 91.97 96.93 97.30 91.48 79.71 63.85 55.68 101.71
S.D. 3.40 4.70 5.83 5.12 6.90 6.40 5.88 5.13 6.37 6.24 3.80 3.39 2.67
SKEW 0.08 0.12 -0.35 -0.66 -0.09 0.07 -0.33 -0.76 0.08 0.05 0.08 0.09 -0.50
MAX 63.00 71.00 82.00 90.00 102.00 104.00 105.00 105.00 106.00 94.00 72.00 62.00 106.00
MIN 51.00 55.00 57.00 66.00 72.00 81.00 85.00 84.00 79.00 64.00 55.00 50.00 96.00
NO YRS 31 32 34 33 34 33 30 33 27 31 33 34 14