NORTHWOOD, IOWA

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(136103)

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1896 ----- z ----- z ----- z 82.00 88.00 91.00 95.00 96.00 80.00 75.00 56.00 55.00 96.00
1897 52.00 42.00 57.00 75.00 85.00 93.00 96.00 86.00 91.00 89.00 72.00 41.00 96.00
1898 40.00 42.00 62.00 78.00 83.00 92.00 94.00 94.00 93.00 83.00 62.00 38.00 d 94.00
1899 40.00 50.00 40.00 82.00 83.00 89.00 93.00 96.00 92.00 83.00 62.00 54.00 96.00
1900 49.00 51.00 62.00 85.00 88.00 91.00 90.00 91.00 91.00 81.00 66.00 45.00 91.00
1901 47.00 d 41.00 60.00 85.00 88.00 93.00 105.00 93.00 90.00 80.00 63.00 44.00 a 105.00
1902 47.00 51.00 66.00 72.00 84.00 84.00 89.00 83.00 78.00 73.00 65.00 44.00 89.00
1903 41.00 42.00 66.00 71.00 80.00 81.00 87.00 84.00 80.00 75.00 69.00 45.00 87.00
1904 42.00 46.00 ----- z 77.00 85.00 86.00 91.00 87.00 87.00 78.00 o 67.00 44.00 91.00
1905 52.00 ----- z 65.00 73.00 80.00 90.00 94.00 96.00 84.00 84.00 62.00 45.00 96.00
1906 46.00 45.00 50.00 77.00 85.00 88.00 90.00 91.00 d 88.00 f 73.00 67.00 46.00 91.00
1907 39.00 47.00 80.00 64.00 85.00 90.00 b 91.00 c 89.00 a 83.00 c 76.00 54.00 a 51.00 a 91.00
1908 ----- z 47.00 a 69.00 b 79.00 83.00 85.00 a 91.00 d 87.00 a 90.00 77.00 60.00 d 49.00 j 91.00
1909 43.00 47.00 48.00 f 66.00 d 88.00 f 90.00 93.00 i 92.00 s 81.00 d 78.00 68.00 47.00 93.00
1910 36.00 d 36.00 80.00 90.00 b 77.00 b 94.00 e 95.00 f 91.00 87.00 83.00 51.00 50.00 95.00
1911 43.00 d 48.00 h 65.00 g ----- z 87.00 ----- z ----- z 88.00 92.00 b 74.00 c 47.00 48.00 92.00
1912 34.00 39.00 c 49.00 72.00 88.00 92.00 92.00 88.00 89.00 82.00 e 61.00 49.00 92.00
1913 49.00 55.00 58.00 81.00 90.00 a 97.00 95.00 b 94.00 95.00 80.00 63.00 52.00 97.00
1914 50.00 a 45.00 58.00 79.00 88.00 88.00 c 94.00 94.00 b 85.00 79.00 68.00 47.00 94.00
1915 40.00 41.00 49.00 81.00 85.00 86.00 89.00 85.00 83.00 70.00 73.00 48.00 89.00
1916 40.00 44.00 60.00 79.00 84.00 90.00 96.00 95.00 89.00 c 83.00 j 60.00 e 61.00 b 96.00
1917 39.00 40.00 64.00 80.00 88.00 f ----- z 94.00 f 90.00 a 82.00 70.00 f 63.00 h 42.00 h 94.00
1918 38.00 50.00 68.00 67.00 a 89.00 ----- z ----- z ----- z 78.00 82.00 66.00 56.00 l 89.00
1919 49.00 44.00 66.00 a 68.00 ----- z 88.00 c 93.00 e 86.00 i 85.00 ----- z ----- z 40.00 b 93.00
1920 36.00 j 39.00 b 72.00 68.00 86.00 94.00 90.00 e 88.00 85.00 79.00 53.00 46.00 94.00
1921 43.00 57.00 75.00 a 79.00 89.00 a 94.00 d 97.00 b 94.00 d 87.00 b 78.00 e 53.00 d 52.00 d 97.00
1922 40.00 42.00 a 60.00 68.00 c 87.00 a 95.00 89.00 a 97.00 98.00 85.00 e 62.00 b 47.00 98.00
1923 41.00 48.00 a 63.00 80.00 83.00 b 93.00 b 99.00 a 92.00 d 85.00 73.00 d 58.00 c 57.00 f 99.00
1924 41.00 t 47.00 n 44.00 l 81.00 h 85.00 a 85.00 b 87.00 89.00 c 78.00 g 78.00 66.00 g 45.00 b 89.00
1925 38.00 47.00 m 74.00 e 87.00 k 96.00 g 89.00 g 94.00 d 90.00 f 95.00 62.00 a 60.00 40.00 k 96.00
1926 38.00 k 49.00 f 61.00 i 81.00 88.00 e 92.00 d 100.00 a 90.00 d 86.00 74.00 b 65.00 37.00 100.00
1927 41.00 49.00 b 67.00 79.00 v 83.00 y 95.00 f 93.00 a 89.00 b 90.00 a 86.00 e ----- z ----- z 95.00
1928 ----- z ----- z 78.00 76.00 89.00 82.00 94.00 91.00 85.00 85.00 59.00 46.00 94.00
1929 33.00 a 32.00 60.00 81.00 86.00 89.00 o 93.00 91.00 92.00 82.00 55.00 50.00 93.00
1930 47.00 60.00 73.00 g 89.00 84.00 89.00 100.00 103.00 89.00 86.00 69.00 47.00 103.00
1931 51.00 58.00 53.00 86.00 88.00 99.00 100.00 95.00 98.00 80.00 73.00 a 51.00 100.00
1932 38.00 48.00 64.00 76.00 92.00 90.00 95.00 92.00 85.00 81.00 62.00 54.00 95.00
1933 51.00 52.00 63.00 78.00 84.00 100.00 93.00 93.00 92.00 78.00 79.00 48.00 100.00
1934 49.00 56.00 69.00 85.00 105.00 103.00 101.00 95.00 83.00 84.00 65.00 38.00 105.00
1935 43.00 43.00 71.00 71.00 77.00 85.00 95.00 91.00 89.00 78.00 59.00 41.00 95.00
1936 35.00 38.00 69.00 77.00 91.00 93.00 107.00 97.00 88.00 75.00 60.00 53.00 107.00
1937 37.00 40.00 55.00 74.00 85.00 94.00 93.00 100.00 91.00 82.00 67.00 42.00 100.00
1938 40.00 42.00 76.00 a 78.00 80.00 90.00 94.00 91.00 90.00 85.00 75.00 44.00 a 94.00
1939 45.00 40.00 78.00 88.00 92.00 91.00 97.00 91.00 97.00 81.00 71.00 62.00 97.00
1940 35.00 38.00 65.00 75.00 88.00 92.00 102.00 88.00 90.00 80.00 65.00 47.00 102.00
1941 42.00 39.00 60.00 80.00 86.00 90.00 96.00 92.00 88.00 72.00 70.00 55.00 96.00
1942 51.00 38.00 64.00 80.00 89.00 87.00 92.00 88.00 87.00 79.00 66.00 38.00 92.00
1943 39.00 47.00 76.00 78.00 88.00 93.00 90.00 90.00 85.00 77.00 53.00 47.00 93.00
1944 63.00 47.00 51.00 67.00 88.00 92.00 88.00 93.00 86.00 78.00 74.00 35.00 93.00
1945 37.00 46.00 72.00 74.00 79.00 86.00 92.00 88.00 89.00 83.00 70.00 45.00 92.00
1946 44.00 47.00 76.00 82.00 80.00 91.00 92.00 90.00 84.00 79.00 56.00 62.00 92.00
1947 49.00 42.00 61.00 78.00 78.00 89.00 94.00 97.00 91.00 87.00 62.00 40.00 97.00
1948 ----- z ----- z ----- z 83.00 d 91.00 86.00 98.00 97.00 92.00 73.00 66.00 g 56.00 98.00
1949 47.00 j 39.00 55.00 85.00 91.00 94.00 95.00 93.00 82.00 80.00 74.00 a 54.00 95.00
1950 40.00 39.00 51.00 73.00 83.00 88.00 88.00 91.00 a 84.00 85.00 a 70.00 41.00 a 91.00
1951 41.00 d 44.00 42.00 77.00 80.00 b 81.00 m ----- z ----- z 82.00 84.00 60.00 57.00 84.00
1952 40.00 45.00 56.00 87.00 89.00 a 93.00 92.00 86.00 92.00 a 79.00 d 70.00 c 41.00 93.00
1953 39.00 41.00 b 63.00 a 73.00 d 83.00 f 100.00 95.00 d 93.00 94.00 n 91.00 c 70.00 n 47.00 e 100.00
1954 40.00 g 58.00 ----- z 84.00 89.00 90.00 e 96.00 b 90.00 86.00 a 75.00 67.00 a ----- z 96.00
1955 37.00 a 49.00 c 65.00 b 77.00 a 89.00 a 90.00 100.00 a 99.00 95.00 81.00 57.00 a 42.00 b 100.00
1956 48.00 b ----- z 51.00 b 81.00 c 89.00 e 97.00 d 90.00 e 94.00 88.00 87.00 64.00 49.00 97.00
1957 40.00 a 45.00 c 58.00 b 84.00 84.00 88.00 a 96.00 94.00 87.00 75.00 55.00 46.00 96.00
1958 46.00 57.00 59.00 82.00 85.00 92.00 94.00 94.00 88.00 88.00 67.00 50.00 94.00
1959 43.00 40.00 62.00 78.00 89.00 c 91.00 91.00 97.00 90.00 69.00 59.00 53.00 97.00
1960 45.00 44.00 54.00 87.00 83.00 86.00 94.00 93.00 94.00 82.00 68.00 52.00 94.00
1961 42.00 45.00 53.00 68.00 90.00 95.00 91.00 89.00 j 91.00 83.00 62.00 55.00 95.00
1962 42.00 46.00 57.00 85.00 89.00 91.00 91.00 88.00 87.00 83.00 62.00 62.00 91.00
1963 50.00 46.00 a 75.00 77.00 86.00 96.00 98.00 88.00 86.00 93.00 62.00 51.00 98.00
1964 48.00 55.00 58.00 87.00 91.00 92.00 97.00 98.00 90.00 80.00 69.00 42.00 98.00
1965 43.00 46.00 40.00 80.00 88.00 88.00 97.00 97.00 82.00 80.00 71.00 53.00 97.00
1966 41.00 51.00 71.00 73.00 90.00 92.00 95.00 91.00 87.00 83.00 60.00 47.00 95.00
1967 41.00 45.00 78.00 82.00 91.00 90.00 89.00 86.00 82.00 84.00 67.00 50.00 91.00
1968 46.00 47.00 81.00 86.00 86.00 94.00 90.00 95.00 84.00 84.00 62.00 57.00 95.00
1969 35.00 38.00 49.00 75.00 91.00 90.00 94.00 91.00 89.00 85.00 65.00 48.00 94.00
1970 37.00 41.00 52.00 91.00 91.00 99.00 93.00 92.00 90.00 84.00 58.00 53.00 99.00
1971 36.00 45.00 69.00 79.00 84.00 94.00 90.00 93.00 95.00 i 78.00 a 65.00 36.00 95.00
1972 39.00 43.00 60.00 76.00 91.00 91.00 93.00 95.00 86.00 78.00 58.00 42.00 95.00
1973 45.00 ----- z 61.00 73.00 82.00 94.00 93.00 92.00 84.00 79.00 64.00 52.00 94.00
1974 46.00 42.00 63.00 83.00 82.00 91.00 100.00 89.00 86.00 79.00 65.00 42.00 100.00
1975 36.00 39.00 48.00 68.00 91.00 91.00 94.00 93.00 86.00 90.00 73.00 52.00 94.00
1976 42.00 58.00 68.00 82.00 86.00 91.00 98.00 95.00 93.00 90.00 61.00 48.00 98.00
1977 35.00 56.00 67.00 86.00 90.00 95.00 98.00 87.00 85.00 70.00 60.00 41.00 98.00
1978 33.00 37.00 82.00 70.00 94.00 92.00 93.00 92.00 97.00 78.00 74.00 35.00 97.00
1979 25.00 39.00 45.00 76.00 89.00 91.00 91.00 92.00 86.00 76.00 63.00 55.00 92.00
1980 43.00 37.00 58.00 93.00 93.00 98.00 99.00 92.00 91.00 80.00 71.00 47.00 99.00
1981 57.00 65.00 75.00 88.00 82.00 90.00 93.00 88.00 88.00 68.00 66.00 40.00 93.00
1982 38.00 42.00 58.00 73.00 87.00 89.00 97.00 95.00 86.00 78.00 58.00 58.00 97.00
1983 37.00 50.00 65.00 76.00 81.00 93.00 98.00 96.00 91.00 82.00 66.00 32.00 98.00
1984 42.00 51.00 50.00 80.00 84.00 90.00 93.00 97.00 93.00 74.00 59.00 53.00 97.00
1985 38.00 51.00 70.00 92.00 88.00 102.00 93.00 92.00 93.00 72.00 56.00 36.00 102.00
1986 42.00 37.00 83.00 82.00 89.00 94.00 95.00 90.00 89.00 75.00 61.00 38.00 95.00
1987 51.00 57.00 72.00 86.00 93.00 100.00 101.00 a 97.00 89.00 80.00 63.00 46.00 101.00
1988 40.00 45.00 62.00 77.00 91.00 101.00 102.00 101.00 93.00 76.00 61.00 43.00 102.00
1989 46.00 50.00 74.00 76.00 85.00 91.00 97.00 94.00 82.00 82.00 64.00 50.00 97.00
1990 54.00 57.00 70.00 83.00 86.00 90.00 100.00 89.00 92.00 85.00 72.00 51.00 100.00
1991 37.00 43.00 75.00 88.00 88.00 96.00 94.00 89.00 86.00 78.00 50.00 41.00 96.00
1992 44.00 43.00 63.00 77.00 91.00 89.00 86.00 90.00 81.00 86.00 53.00 36.00 91.00
1993 39.00 40.00 50.00 71.00 82.00 85.00 87.00 88.00 84.00 85.00 60.00 43.00 88.00
1994 38.00 46.00 69.00 88.00 a 89.00 85.00 p 82.00 i 89.00 91.00 77.00 66.00 46.00 91.00
1995 33.00 45.00 67.00 73.00 80.00 94.00 101.00 91.00 84.00 83.00 47.00 50.00 101.00
1996 49.00 55.00 63.00 76.00 90.00 93.00 92.00 89.00 83.00 81.00 58.00 ----- z 93.00
1997 40.00 40.00 69.00 70.00 81.00 86.00 89.00 a 85.00 83.00 89.00 62.00 41.00 89.00
1998 46.00 53.00 72.00 77.00 91.00 90.00 a 86.00 ----- z 90.00 70.00 67.00 66.00 91.00
1999 35.00 47.00 71.00 68.00 85.00 86.00 94.00 87.00 86.00 77.00 79.00 50.00 94.00
2000 40.00 60.00 77.00 81.00 86.00 94.00 89.00 87.00 92.00 81.00 70.00 34.00 94.00
2001 39.00 35.00 42.00 83.00 a 91.00 95.00 91.00 91.00 80.00 85.00 76.00 62.00 95.00
2002 59.00 55.00 56.00 89.00 89.00 94.00 93.00 86.00 89.00 86.00 65.00 52.00 94.00
2003 55.00 51.00 73.00 88.00 82.00 87.00 89.00 91.00 87.00 83.00 61.00 52.00 91.00
2004 46.00 48.00 71.00 88.00 84.00 90.00 85.00 82.00 83.00 80.00 73.00 51.00 90.00
2005 44.00 52.00 o 68.00 79.00 74.00 90.00 89.00 89.00 88.00 88.00 73.00 42.00 90.00
2006 49.00 51.00 57.00 85.00 91.00 86.00 93.00 94.00 81.00 85.00 76.00 52.00 e 94.00
2007 44.00 43.00 78.00 a 90.00 91.00 87.00 93.00 87.00 87.00 85.00 64.00 e 34.00 93.00
2008 42.00 d 33.00 j 50.00 f 74.00 85.00 85.00 86.00 88.00 83.00 75.00 74.00 40.00 88.00
2009 31.00 47.00 64.00 88.00 89.00 k 91.00 e 81.00 a 86.00 82.00 68.00 68.00 50.00 91.00
2010 34.00 35.00 74.00 84.00 90.00 83.00 p 91.00 89.00 84.00 87.00 67.00 39.00 91.00
2011 40.00 d 51.00 53.00 80.00 b 91.00 a 96.00 c 93.00 88.00 95.00 c 84.00 j 62.00 u 49.00 96.00
2012 55.00 50.00 79.00 79.00 93.00 a 93.00 a 95.00 92.00 c 91.00 80.00 70.00 c 61.00 95.00
2013 44.00 41.00 e 52.00 a 38.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 52.00
Period of Record Statistics
MEAN 42.57 45.98 63.65 79.13 86.72 91.33 93.65 91.43 87.59 80.10 64.10 47.34 95.65
S.D. 6.24 6.56 10.04 6.47 4.42 4.20 4.36 3.93 4.41 5.46 6.66 7.06 4.16
SKEW 0.49 0.49 -0.24 -0.11 0.10 0.34 0.24 0.26 0.14 -0.39 -0.15 0.17 0.35
MAX 63.00 65.00 83.00 93.00 105.00 103.00 107.00 103.00 98.00 93.00 79.00 66.00 107.00
MIN 25.00 32.00 40.00 64.00 74.00 81.00 81.00 82.00 78.00 62.00 47.00 32.00 87.00
NO YRS 109 106 108 113 110 108 110 110 113 112 110 109 69