PORTLAND WSO CITY, OREGON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(356761)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197306
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
1928 43.23 50.72 57.48 58.73 74.13 69.80 79.23 78.32 70.23 61.23 51.87 45.23 61.68
1929 39.26 41.93 54.58 57.43 68.26 71.30 80.00 80.90 75.63 67.58 51.80 49.90 61.55
1930 32.65 53.14 58.87 64.50 63.77 71.93 77.61 80.74 72.37 61.42 52.27 44.74 61.17
1931 49.84 51.18 55.77 65.13 73.45 72.60 82.13 81.10 71.53 64.00 49.60 44.35 63.39
1932 44.19 47.10 53.45 61.50 66.48 76.47 75.71 77.26 77.17 64.45 55.13 42.71 61.80
1933 43.65 43.75 53.97 61.50 61.00 71.40 79.06 80.35 67.40 65.26 51.63 50.48 60.79
1934 51.55 56.36 64.03 69.97 70.81 74.03 76.84 80.48 72.30 65.48 54.90 48.10 65.40
1935 45.97 52.50 50.29 60.50 68.94 74.43 78.68 79.71 78.07 60.52 48.20 46.58 62.03
1936 48.48 38.90 52.52 64.47 70.71 73.80 77.74 80.42 73.20 68.23 53.00 47.29 62.40
1937 34.35 47.04 56.10 57.13 68.35 74.80 78.45 76.65 72.53 67.52 54.10 49.03 61.34
1938 46.45 48.14 53.35 63.33 69.84 75.27 82.81 76.68 77.60 64.58 49.60 48.10 62.98
1939 47.90 46.39 57.48 66.07 70.94 69.70 80.52 81.52 75.13 63.58 56.40 51.00 63.89
1940 47.29 51.97 59.16 63.53 73.29 79.20 79.19 81.90 73.70 65.55 49.67 48.97 64.45
1941 49.10 55.64 64.23 65.97 67.97 71.70 84.52 77.58 68.93 63.29 55.20 47.94 64.34
1942 40.29 49.36 55.94 62.73 65.42 71.20 80.94 80.58 75.83 65.42 51.10 48.23 62.25
1943 39.97 53.39 53.74 64.40 65.29 69.87 78.23 76.06 79.03 62.74 53.93 47.03 61.97
1944 46.26 49.90 54.94 60.23 68.42 71.43 79.29 77.26 76.87 68.06 51.70 44.45 62.40
1945 48.77 50.04 52.03 58.60 68.23 72.73 81.45 79.39 71.73 63.94 50.87 46.81 62.05
1946 47.32 49.89 54.19 61.17 70.45 69.90 78.71 78.61 71.90 58.58 51.57 47.84 61.68
1947 43.71 54.54 59.81 64.63 73.35 70.57 76.77 75.90 75.17 62.10 53.23 49.77 63.30
1948 46.61 47.86 52.48 56.13 65.23 75.87 76.52 74.19 72.73 62.81 50.00 a 43.39 60.32
1949 36.30 a 46.82 54.32 64.14 a 71.06 74.00 77.60 a 77.35 75.87 58.63 a 59.53 46.77 61.87
1950 34.81 47.50 52.00 58.63 66.84 72.03 79.06 81.90 74.50 59.00 52.53 52.84 60.97
1951 44.58 50.43 49.68 66.60 68.13 77.77 78.87 78.42 77.13 62.35 51.97 43.48 62.45
1952 42.10 48.48 52.39 64.87 69.16 70.13 82.19 80.00 78.97 72.32 49.17 48.45 63.19
1953 52.97 51.57 54.19 59.43 64.68 66.80 78.94 77.39 75.37 65.65 56.27 49.52 62.73
1954 45.32 50.71 53.84 60.10 68.32 67.17 73.65 72.39 70.67 63.42 56.73 46.77 60.76
1955 45.58 47.75 49.19 55.00 63.87 71.80 72.58 77.48 73.00 62.35 48.73 46.10 59.45
1956 47.60 a 41.86 52.19 64.27 71.39 68.90 81.03 a 77.23 73.53 60.16 51.50 47.30 a 61.41
1957 37.39 50.07 54.13 62.83 69.23 72.60 76.84 75.47 a 80.13 61.90 53.43 49.87 61.99
1958 50.35 55.75 54.81 60.90 74.35 74.57 84.61 84.06 74.47 68.03 52.53 50.87 65.44
1959 47.52 48.61 54.94 61.90 65.71 71.50 81.32 77.71 69.50 64.55 52.50 47.71 61.95
1960 40.87 a 49.30 f 54.16 61.17 63.81 74.47 83.03 75.39 73.07 64.52 54.00 46.26 62.79
1961 51.16 53.54 55.13 59.30 66.52 78.07 81.45 83.55 71.30 62.90 51.67 47.23 63.48
1962 45.55 50.14 53.39 62.50 60.48 72.20 78.27 a 76.16 74.17 63.77 55.67 50.29 61.88
1963 41.58 57.96 55.77 57.77 69.90 70.47 73.84 77.10 77.83 64.94 54.20 48.39 62.48
1964 49.10 52.31 54.42 58.83 65.97 69.80 ----- z 76.29 71.43 66.87 50.30 45.48 60.07
1965 46.52 51.50 60.48 63.37 65.35 73.53 82.16 79.68 73.03 67.87 55.80 45.58 63.74
1966 46.97 50.96 56.10 64.40 70.65 74.87 77.68 80.16 75.73 64.32 54.83 50.52 63.93
1967 50.23 53.79 52.97 57.80 70.32 78.10 82.61 88.48 80.37 65.03 55.07 47.77 65.21
1968 46.35 58.59 58.68 59.43 67.68 74.13 81.84 75.77 73.23 62.52 54.63 43.23 63.01
1969 38.45 48.43 59.71 60.67 72.81 76.33 78.42 77.68 73.07 61.84 53.93 48.35 62.47
1970 47.00 55.64 57.42 57.23 68.84 77.67 81.35 80.52 70.73 63.19 54.70 45.94 63.35
1971 46.16 50.36 52.13 61.13 68.32 69.60 81.10 82.81 72.27 61.32 51.67 45.23 61.84
1972 44.45 50.59 58.10 57.03 71.65 73.37 82.71 83.26 71.67 63.45 54.40 42.52 62.77
1973 45.00 53.21 55.10 63.10 70.74 73.10 ----- z ----- z ----- z ----- z ----- z ----- z 60.04
Period of Record Statistics
MEAN 44.80 50.36 55.21 61.52 68.48 72.85 79.44 78.93 74.00 63.94 52.92 47.30 62.50
S.D. 4.73 4.08 3.25 3.21 3.29 2.90 2.75 2.98 3.00 2.78 2.42 2.42 1.32
SKEW -0.79 -0.46 0.81 0.14 -0.32 0.22 -0.36 0.61 0.24 0.43 0.19 -0.08 0.39
MAX 52.97 58.59 64.23 69.97 74.35 79.20 84.61 88.48 80.37 72.32 59.53 52.84 65.44
MIN 32.65 38.90 49.19 55.00 60.48 66.80 72.58 72.39 67.40 58.58 48.20 42.52 59.45
NO YRS 46 45 46 46 46 46 44 45 45 45 45 45 43