BOULDER CITY, e:

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(261071)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200407
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
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 58.00 47.00 26.00 27.00 26.00
1932 28.00 27.00 35.00 31.00 49.00 53.00 66.00 67.00 58.00 46.00 44.00 17.00 17.00
1933 28.00 12.00 37.00 37.00 38.00 52.00 66.00 67.00 65.00 47.00 34.00 29.00 12.00
1934 35.00 41.00 47.00 41.00 52.00 50.00 64.00 68.00 51.00 51.00 37.00 30.00 30.00
1935 25.00 36.00 35.00 39.00 42.00 68.00 69.00 a 70.00 58.00 36.00 38.00 34.00 25.00
1936 31.00 30.00 34.00 41.00 53.00 51.00 65.00 64.00 57.00 51.00 34.00 31.00 30.00
1937 11.00 30.00 34.00 42.00 55.00 62.00 69.00 72.00 62.00 54.00 43.00 34.00 11.00
1938 34.00 33.00 33.00 43.00 46.00 58.00 68.00 68.00 58.00 43.00 34.00 32.00 32.00
1939 34.00 28.00 34.00 39.00 54.00 57.00 68.00 68.00 56.00 45.00 44.00 32.00 28.00
1940 32.00 34.00 39.00 42.00 59.00 66.00 70.00 70.00 60.00 40.00 38.00 28.00 28.00
1941 33.00 39.00 39.00 40.00 50.00 55.00 67.00 63.00 50.00 43.00 35.00 28.00 28.00
1942 26.00 28.00 37.00 44.00 48.00 57.00 67.00 64.00 61.00 45.00 41.00 34.00 26.00
1943 25.00 32.00 39.00 36.00 52.00 54.00 67.00 67.00 59.00 42.00 39.00 36.00 25.00
1944 32.00 32.00 31.00 42.00 45.00 54.00 69.00 69.00 61.00 54.00 36.00 35.00 b 31.00
1945 26.00 35.00 32.00 37.00 50.00 58.00 66.00 66.00 c 57.00 49.00 39.00 29.00 26.00
1946 32.00 29.00 35.00 45.00 52.00 68.00 67.00 65.00 62.00 42.00 34.00 31.00 29.00
1947 29.00 37.00 41.00 43.00 51.00 58.00 70.00 64.00 60.00 49.00 34.00 31.00 29.00
1948 25.00 28.00 32.00 40.00 44.00 56.00 67.00 69.00 52.00 43.00 34.00 28.00 25.00
1949 17.00 21.00 36.00 37.00 45.00 55.00 70.00 66.00 64.00 39.00 41.00 25.00 17.00
1950 19.00 29.00 35.00 41.00 44.00 50.00 63.00 68.00 56.00 51.00 34.00 37.00 19.00
1951 26.00 27.00 30.00 39.00 43.00 59.00 68.00 63.00 60.00 40.00 32.00 29.00 26.00
1952 24.00 31.00 32.00 45.00 53.00 56.00 68.00 70.00 52.00 53.00 29.00 a 30.00 24.00
1953 35.00 a 30.00 35.00 ----- z 45.00 49.00 69.00 62.00 59.00 37.00 33.00 33.00 30.00
1954 31.00 37.00 32.00 47.00 44.00 49.00 70.00 63.00 61.00 43.00 a 34.00 29.00 29.00
1955 29.00 27.00 32.00 39.00 43.00 48.00 67.00 67.00 55.00 48.00 32.00 31.00 27.00
1956 31.00 25.00 30.00 40.00 a 47.00 61.00 65.00 65.00 62.00 40.00 32.00 32.00 25.00
1957 26.00 30.00 36.00 40.00 47.00 58.00 68.00 59.00 56.00 42.00 34.00 35.00 26.00
1958 32.00 39.00 34.00 36.00 50.00 60.00 65.00 67.00 53.00 47.00 28.00 37.00 28.00
1959 28.00 32.00 40.00 49.00 44.00 67.00 64.00 61.00 55.00 40.00 37.00 34.00 28.00
1960 25.00 30.00 38.00 38.00 50.00 65.00 70.00 64.00 61.00 44.00 38.00 31.00 25.00
1961 34.00 38.00 38.00 42.00 48.00 54.00 65.00 67.00 58.00 41.00 33.00 26.00 26.00
1962 24.00 22.00 29.00 49.00 44.00 50.00 67.00 67.00 59.00 48.00 39.00 28.00 22.00
1963 14.00 39.00 34.00 31.00 a 43.00 49.00 69.00 65.00 61.00 a 55.00 37.00 29.00 14.00
1964 25.00 b 28.00 25.00 35.00 39.00 52.00 68.00 68.00 a 53.00 52.00 31.00 21.00 21.00
1965 27.00 27.00 35.00 32.00 44.00 55.00 63.00 67.00 46.00 49.00 35.00 31.00 27.00
1966 24.00 26.00 32.00 39.00 52.00 59.00 68.00 64.00 60.00 46.00 37.00 27.00 24.00
1967 22.00 34.00 37.00 37.00 44.00 50.00 69.00 68.00 63.00 46.00 38.00 24.00 22.00
1968 32.00 40.00 40.00 39.00 38.00 51.00 71.00 61.00 57.00 51.00 38.00 22.00 22.00
1969 29.00 30.00 32.00 42.00 47.00 56.00 69.00 66.00 61.00 47.00 39.00 30.00 29.00
1970 25.00 31.00 37.00 39.00 49.00 57.00 69.00 64.00 55.00 41.00 41.00 30.00 25.00
1971 20.00 29.00 29.00 39.00 37.00 51.00 70.00 68.00 52.00 30.00 37.00 28.00 20.00
1972 24.00 28.00 38.00 40.00 48.00 64.00 64.00 65.00 58.00 44.00 38.00 22.00 22.00
1973 24.00 36.00 34.00 40.00 44.00 54.00 63.00 62.00 60.00 48.00 32.00 32.00 24.00
1974 16.00 36.00 38.00 46.00 45.00 62.00 64.00 68.00 60.00 41.00 a 37.00 29.00 16.00
1975 23.00 30.00 30.00 37.00 43.00 57.00 66.00 61.00 63.00 40.00 30.00 ----- z 23.00
1976 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 56.00 46.00 ----- z 31.00 31.00
1977 ----- z 34.00 30.00 38.00 43.00 63.00 70.00 68.00 56.00 51.00 35.00 38.00 30.00
1978 34.00 34.00 42.00 41.00 47.00 a 66.00 62.00 65.00 53.00 50.00 34.00 21.00 21.00
1979 22.00 28.00 31.00 41.00 b 41.00 d ----- z ----- z ----- z ----- z ----- z 31.00 32.00 22.00
1980 33.00 35.00 33.00 38.00 b 44.00 41.00 64.00 65.00 58.00 41.00 38.00 36.00 33.00
1981 35.00 35.00 38.00 43.00 51.00 61.00 75.00 64.00 56.00 40.00 34.00 32.00 32.00
1982 23.00 24.00 35.00 33.00 52.00 57.00 58.00 62.00 43.00 43.00 34.00 28.00 23.00
1983 31.00 a 33.00 34.00 36.00 44.00 54.00 64.00 61.00 52.00 49.00 32.00 27.00 27.00
1984 34.00 37.00 37.00 39.00 54.00 58.00 63.00 65.00 57.00 41.00 34.00 29.00 29.00
1985 30.00 20.00 31.00 43.00 52.00 57.00 65.00 a 71.00 53.00 a 49.00 30.00 27.00 20.00
1986 39.00 28.00 39.00 43.00 47.00 67.00 56.00 67.00 46.00 47.00 41.00 32.00 28.00
1987 21.00 31.00 32.00 41.00 47.00 60.00 58.00 65.00 62.00 49.00 35.00 25.00 21.00
1988 28.00 a 37.00 36.00 42.00 42.00 50.00 67.00 68.00 56.00 60.00 35.00 20.00 20.00
1989 27.00 16.00 34.00 41.00 40.00 58.00 69.00 65.00 50.00 39.00 37.00 31.00 16.00
1990 31.00 24.00 32.00 50.00 50.00 55.00 69.00 67.00 60.00 48.00 33.00 9.00 9.00
1991 24.00 40.00 31.00 40.00 38.00 50.00 70.00 66.00 61.00 32.00 32.00 30.00 24.00
1992 29.00 35.00 38.00 49.00 61.00 57.00 63.00 67.00 66.00 49.00 36.00 28.00 28.00
1993 25.00 31.00 36.00 42.00 50.00 46.00 69.00 61.00 60.00 48.00 33.00 32.00 25.00
1994 28.00 30.00 42.00 43.00 50.00 66.00 66.00 70.00 60.00 47.00 31.00 33.00 28.00
1995 34.00 41.00 34.00 38.00 46.00 48.00 75.00 75.00 61.00 51.00 43.00 35.00 34.00
1996 33.00 31.00 42.00 46.00 49.00 62.00 76.00 73.00 60.00 42.00 41.00 32.00 31.00
1997 30.00 37.00 38.00 36.00 57.00 58.00 69.00 72.00 a 65.00 47.00 43.00 32.00 30.00
1998 33.00 36.00 36.00 38.00 45.00 56.00 a 69.00 75.00 61.00 48.00 37.00 26.00 26.00
1999 36.00 33.00 43.00 a 36.00 a 46.00 46.00 70.00 72.00 b 66.00 54.00 41.00 38.00 33.00
2000 37.00 j ----- z ----- z ----- z 54.00 m 66.00 i 69.00 h 66.00 f 60.00 l 43.00 g 34.00 g 36.00 g 34.00
2001 35.00 f 33.00 j 38.00 p 38.00 o 53.00 j 64.00 k 68.00 q 72.00 p 70.00 o 55.00 l 36.00 n 37.00 z 33.00
2002 30.00 v 31.00 v ----- z ----- z ----- z ----- z 74.00 o 74.00 n 67.00 o 46.00 o 45.00 o 32.00 p 30.00
2003 43.00 q 32.00 n 41.00 l 41.00 48.00 ----- z ----- z ----- z 64.00 49.00 35.00 31.00 31.00
2004 32.00 31.00 39.00 46.00 p 55.00 d 60.00 e 60.00 n ----- z ----- z ----- z ----- z ----- z 31.00
Period of Record Statistics
MEAN 27.82 31.24 35.22 40.27 47.23 56.28 67.03 66.38 57.78 45.65 35.72 29.61 24.73
S.D. 5.56 5.71 3.94 4.02 5.04 5.95 3.58 3.40 4.74 5.43 3.91 4.97 5.47
SKEW -0.65 -0.73 0.28 0.16 0.27 0.05 -0.46 0.32 -0.80 -0.26 0.14 -1.30 -0.84
MAX 39.00 41.00 47.00 50.00 61.00 68.00 76.00 75.00 66.00 60.00 44.00 38.00 34.00
MIN 11.00 12.00 25.00 31.00 37.00 41.00 56.00 59.00 43.00 30.00 26.00 9.00 9.00
NO YRS 67 68 68 67 69 67 66 66 69 69 69 69 63