IRON MTN s, a

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(044297)

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
1935 30.00 j 36.00 39.00 46.00 54.00 63.00 69.00 74.00 65.00 42.00 40.00 39.00 30.00
1936 34.00 32.00 41.00 43.00 61.00 60.00 71.00 71.00 59.00 54.00 33.00 35.00 32.00
1937 21.00 33.00 41.00 48.00 57.00 66.00 77.00 74.00 67.00 57.00 44.00 35.00 21.00
1938 38.00 34.00 40.00 46.00 51.00 66.00 70.00 70.00 70.00 50.00 40.00 39.00 34.00
1939 38.00 32.00 38.00 45.00 61.00 62.00 69.00 78.00 62.00 49.00 46.00 35.00 32.00
1940 36.00 40.00 45.00 46.00 65.00 70.00 67.00 70.00 66.00 48.00 40.00 35.00 35.00
1941 38.00 44.00 44.00 48.00 56.00 65.00 72.00 68.00 57.00 48.00 38.00 35.00 35.00
1942 30.00 31.00 43.00 51.00 56.00 61.00 71.00 66.00 64.00 46.00 44.00 37.00 30.00
1943 30.00 38.00 47.00 49.00 55.00 53.00 68.00 72.00 64.00 48.00 39.00 37.00 30.00
1944 28.00 33.00 41.00 47.00 51.00 60.00 a 72.00 70.00 62.00 58.00 37.00 38.00 28.00
1945 33.00 35.00 41.00 42.00 61.00 63.00 73.00 75.00 62.00 53.00 41.00 33.00 33.00
1946 37.00 33.00 41.00 47.00 59.00 72.00 75.00 74.00 68.00 43.00 41.00 33.00 33.00
1947 34.00 41.00 46.00 51.00 57.00 70.00 76.00 68.00 64.00 51.00 35.00 36.00 34.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z 71.00 73.00 56.00 53.00 40.00 i 32.00 32.00
1949 27.00 29.00 42.00 43.00 52.00 60.00 73.00 a 68.00 66.00 42.00 47.00 29.00 27.00
1950 25.00 32.00 41.00 51.00 52.00 58.00 72.00 71.00 63.00 57.00 36.00 38.00 25.00
1951 33.00 34.00 37.00 45.00 48.00 63.00 73.00 68.00 66.00 45.00 39.00 29.00 29.00
1952 27.00 37.00 38.00 51.00 60.00 65.00 73.00 77.00 62.00 56.00 33.00 35.00 27.00
1953 39.00 33.00 37.00 45.00 51.00 60.00 79.00 69.00 60.00 54.00 36.00 29.00 29.00
1954 30.00 43.00 40.00 49.00 52.00 60.00 74.00 a 69.00 61.00 52.00 42.00 31.00 30.00
1955 33.00 33.00 40.00 37.00 49.00 55.00 72.00 70.00 61.00 58.00 38.00 36.00 33.00
1956 33.00 33.00 34.00 47.00 59.00 66.00 70.00 71.00 70.00 42.00 37.00 33.00 33.00
1957 34.00 35.00 43.00 47.00 54.00 68.00 71.00 69.00 66.00 49.00 41.00 39.00 34.00
1958 34.00 39.00 36.00 40.00 57.00 66.00 74.00 75.00 65.00 a 52.00 36.00 39.00 34.00
1959 35.00 36.00 44.00 56.00 55.00 69.00 73.00 67.00 58.00 46.00 41.00 40.00 35.00
1960 27.00 30.00 44.00 48.00 57.00 71.00 75.00 72.00 64.00 53.00 42.00 33.00 27.00
1961 36.00 39.00 41.00 50.00 58.00 62.00 75.00 72.00 59.00 48.00 37.00 32.00 32.00
1962 24.00 35.00 31.00 50.00 53.00 57.00 76.00 71.00 65.00 54.00 46.00 35.00 24.00
1963 24.00 40.00 41.00 42.00 48.00 59.00 73.00 74.00 63.00 58.00 41.00 34.00 24.00
1964 28.00 31.00 37.00 42.00 44.00 64.00 74.00 72.00 65.00 59.00 35.00 31.00 28.00
1965 33.00 29.00 38.00 46.00 53.00 53.00 76.00 71.00 59.00 54.00 41.00 34.00 29.00
1966 30.00 30.00 42.00 50.00 56.00 66.00 a 73.00 69.00 68.00 52.00 40.00 36.00 30.00
1967 34.00 38.00 40.00 41.00 49.00 56.00 76.00 61.00 68.00 51.00 40.00 31.00 b 31.00
1968 34.00 43.00 38.00 40.00 52.00 60.00 69.00 64.00 60.00 56.00 42.00 25.00 25.00
1969 32.00 39.00 37.00 45.00 54.00 63.00 70.00 76.00 65.00 51.00 35.00 32.00 32.00
1970 28.00 38.00 41.00 41.00 56.00 63.00 70.00 70.00 62.00 47.00 42.00 35.00 28.00
1971 22.00 37.00 33.00 49.00 50.00 61.00 74.00 60.00 57.00 33.00 40.00 31.00 22.00
1972 33.00 39.00 43.00 46.00 56.00 65.00 72.00 72.00 64.00 49.00 43.00 22.00 22.00
1973 27.00 41.00 ----- z 47.00 53.00 68.00 78.00 65.00 64.00 53.00 36.00 39.00 27.00
1974 24.00 40.00 41.00 52.00 51.00 70.00 72.00 70.00 70.00 47.00 40.00 32.00 24.00
1975 29.00 32.00 37.00 43.00 51.00 66.00 75.00 68.00 67.00 47.00 31.00 33.00 29.00
1976 30.00 44.00 37.00 43.00 59.00 65.00 76.00 69.00 64.00 a 49.00 37.00 34.00 30.00
1977 33.00 40.00 39.00 47.00 51.00 68.00 75.00 71.00 60.00 54.00 42.00 42.00 33.00
1978 38.00 41.00 47.00 48.00 53.00 69.00 75.00 69.00 61.00 53.00 41.00 29.00 29.00
1979 30.00 35.00 40.00 47.00 51.00 67.00 69.00 70.00 69.00 46.00 41.00 34.00 30.00
1980 38.00 38.00 43.00 43.00 52.00 64.00 75.00 68.00 67.00 48.00 41.00 42.00 38.00
1981 40.00 37.00 43.00 47.00 59.00 66.00 75.00 71.00 68.00 49.00 39.00 39.00 37.00
1982 33.00 37.00 42.00 44.00 58.00 68.00 69.00 73.00 58.00 51.00 41.00 36.00 33.00
1983 37.00 39.00 48.00 45.00 57.00 64.00 70.00 70.00 63.00 58.00 36.00 34.00 34.00
1984 38.00 38.00 42.00 46.00 59.00 68.00 70.00 71.00 68.00 50.00 38.00 35.00 35.00
1985 35.00 31.00 39.00 51.00 61.00 63.00 75.00 74.00 57.00 54.00 36.00 31.00 31.00
1986 43.00 38.00 41.00 43.00 52.00 68.00 69.00 72.00 55.00 53.00 44.00 34.00 34.00
1987 32.00 37.00 39.00 50.00 57.00 72.00 70.00 68.00 64.00 56.00 38.00 27.00 27.00
1988 33.00 35.00 40.00 47.00 47.00 63.00 77.00 69.00 58.00 62.00 39.00 30.00 30.00
1989 29.00 27.00 41.00 54.00 56.00 63.00 75.00 71.00 60.00 ----- z 41.00 36.00 27.00
1990 35.00 32.00 38.00 52.00 56.00 63.00 74.00 70.00 65.00 52.00 39.00 25.00 25.00
1991 33.00 39.00 34.00 41.00 a 42.00 58.00 72.00 63.00 64.00 39.00 38.00 a 33.00 33.00
1992 37.00 39.00 46.00 51.00 62.00 66.00 71.00 68.00 65.00 54.00 38.00 32.00 32.00
1993 31.00 38.00 43.00 36.00 53.00 55.00 64.00 67.00 60.00 49.00 22.00 a 30.00 22.00
1994 32.00 35.00 47.00 48.00 58.00 71.00 68.00 75.00 66.00 48.00 31.00 31.00 31.00
1995 37.00 46.00 40.00 40.00 48.00 57.00 76.00 75.00 67.00 48.00 47.00 37.00 37.00
1996 38.00 34.00 38.00 46.00 53.00 66.00 79.00 72.00 66.00 43.00 48.00 36.00 34.00
1997 40.00 37.00 40.00 46.00 67.00 67.00 66.00 74.00 i 69.00 49.00 45.00 36.00 36.00
1998 35.00 42.00 41.00 46.00 54.00 ----- z 73.00 74.00 61.00 52.00 41.00 29.00 29.00
1999 36.00 ----- z 42.00 42.00 b 47.00 58.00 71.00 71.00 67.00 54.00 c 46.00 39.00 36.00
2000 39.00 43.00 d 38.00 54.00 b 57.00 65.00 74.00 67.00 b 65.00 d 51.00 a 37.00 b 38.00 37.00
2001 38.00 a 34.00 b 45.00 46.00 61.00 b 69.00 a 69.00 71.00 62.00 55.00 a 40.00 a 34.00 c 34.00
2002 35.00 36.00 37.00 52.00 57.00 70.00 79.00 72.00 62.00 48.00 45.00 34.00 34.00
2003 42.00 37.00 43.00 49.00 d 56.00 69.00 ----- z 73.00 e 70.00 54.00 35.00 31.00 31.00
2004 36.00 35.00 45.00 52.00 61.00 68.00 72.00 71.00 62.00 48.00 34.00 36.00 34.00
2005 35.00 j 41.00 46.00 47.00 58.00 65.00 75.00 70.00 60.00 54.00 40.00 32.00 32.00
2006 37.00 40.00 38.00 46.00 62.00 70.00 78.00 74.00 63.00 50.00 37.00 34.00 34.00
2007 22.00 36.00 46.00 42.00 62.00 61.00 73.00 74.00 57.00 55.00 43.00 34.00 22.00
2008 35.00 36.00 41.00 52.00 52.00 66.00 72.00 75.00 66.00 52.00 50.00 f 36.00 35.00
2009 37.00 g 38.00 42.00 c 50.00 67.00 f 66.00 78.00 c 73.00 e 70.00 46.00 44.00 33.00 33.00
2010 39.00 43.00 44.00 45.00 52.00 72.00 75.00 69.00 66.00 51.00 32.00 36.00 32.00
2011 30.00 a 32.00 g 39.00 e 43.00 a 57.00 64.00 73.00 78.00 f 64.00 a 52.00 a 43.00 35.00 30.00
2012 37.00 41.00 42.00 b 47.00 a 58.00 69.00 74.00 c 73.00 70.00 55.00 c 44.00 i 36.00 c 36.00
2013 29.00 e 35.00 46.00 63.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 29.00
Period of Record Statistics
MEAN 32.99 36.59 40.84 46.49 54.99 64.32 72.84 70.62 63.63 50.74 39.39 34.00 30.33
S.D. 4.90 4.04 3.44 3.98 4.73 4.63 3.13 3.34 3.80 4.90 4.31 3.73 4.17
SKEW -0.47 -0.02 -0.21 -0.15 -0.14 -0.49 -0.20 -0.64 -0.21 -0.68 -0.81 -0.51 -0.55
MAX 43.00 46.00 48.00 56.00 67.00 72.00 79.00 78.00 70.00 62.00 48.00 42.00 38.00
MIN 21.00 27.00 31.00 36.00 42.00 53.00 64.00 60.00 55.00 33.00 22.00 22.00 21.00
NO YRS 75 76 77 77 76 76 77 76 78 77 75 78 63