HIBBING PWR SUBSTN,

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(213727)

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 198109
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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1949 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1950 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1951 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1952 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1953 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1954 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1955 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1956 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1957 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1958 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1959 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1960 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1961 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1962 ----- z ----- z ----- z ----- z ----- z 32.00 a 43.00 40.00 24.00 8.00 9.00 -26.00 -26.00
1963 -35.00 -29.00 -15.00 13.00 23.00 32.00 41.00 40.00 28.00 18.00 4.00 -27.00 -35.00
1964 -20.00 -16.00 -15.00 10.00 31.00 28.00 47.00 38.00 28.00 19.00 -23.00 -22.00 -23.00
1965 -36.00 -27.00 -22.00 17.00 29.00 35.00 41.00 37.00 23.00 20.00 3.00 -14.00 -36.00
1966 -38.00 -30.00 -7.00 a 16.00 16.00 35.00 48.00 a 44.00 29.00 20.00 -8.00 -15.00 -38.00
1967 -36.00 -34.00 -25.00 0.00 15.00 37.00 36.00 37.00 22.00 22.00 -6.00 -35.00 -36.00
1968 -37.00 -25.00 -6.00 5.00 22.00 36.00 39.00 36.00 32.00 25.00 9.00 -28.00 -37.00
1969 -24.00 -19.00 -10.00 15.00 28.00 32.00 39.00 44.00 31.00 15.00 -8.00 -18.00 -24.00
1970 -32.00 -31.00 -12.00 -1.00 23.00 39.00 46.00 36.00 27.00 25.00 -5.00 -25.00 -32.00
1971 -25.00 -30.00 -12.00 1.00 26.00 38.00 42.00 41.00 26.00 23.00 -2.00 -17.00 -30.00
1972 -40.00 -24.00 -16.00 2.00 27.00 33.00 39.00 42.00 26.00 14.00 -3.00 -24.00 -40.00
1973 -33.00 -24.00 12.00 13.00 a 26.00 44.00 46.00 46.00 22.00 26.00 4.00 -26.00 -33.00
1974 -32.00 -18.00 -27.00 11.00 23.00 37.00 48.00 38.00 24.00 15.00 6.00 -7.00 -32.00
1975 -26.00 -26.00 -12.00 -2.00 30.00 38.00 47.00 f 40.00 j 29.00 i 18.00 i -7.00 k -22.00 k -26.00
1976 -33.00 j -23.00 i -8.00 h 18.00 j 25.00 k 40.00 h 45.00 j 31.00 i 23.00 i 3.00 k -19.00 i -32.00 l -33.00
1977 -34.00 m ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.00 m 23.00 j -15.00 j -30.00 p -34.00
1978 -26.00 j -30.00 h -11.00 h 16.00 j 17.00 i 29.00 h 40.00 d 35.00 h 28.00 j 14.00 j -22.00 i -25.00 m -30.00
1979 -39.00 i -30.00 h -18.00 j -8.00 i 21.00 i 25.00 i 36.00 j 28.00 h 22.00 o 15.00 i 1.00 h -18.00 n -39.00
1980 -25.00 i ----- z ----- z 22.00 r 26.00 j 35.00 i 40.00 j 41.00 j 22.00 j 9.00 h 3.00 k -28.00 k -28.00
1981 -36.00 j -39.00 h -7.00 i 10.00 h 16.00 k 34.00 i 40.00 i 39.00 j 27.00 i ----- z ----- z ----- z -39.00
Period of Record Statistics
MEAN -31.85 -25.62 -12.85 7.69 24.54 35.43 42.50 39.92 26.31 19.23 -1.54 -21.85 -33.00
S.D. 6.19 5.41 9.83 7.04 4.93 3.94 3.88 3.30 3.25 5.21 8.85 7.38 5.26
SKEW 0.58 0.37 0.95 -0.10 -0.68 0.23 0.11 0.45 0.24 -0.58 -0.92 0.31 0.76
MAX -20.00 -16.00 12.00 17.00 31.00 44.00 48.00 46.00 32.00 26.00 9.00 -7.00 -23.00
MIN -40.00 -34.00 -27.00 -2.00 15.00 28.00 36.00 36.00 22.00 8.00 -23.00 -35.00 -40.00
NO YRS 13 13 13 13 13 14 14 13 13 13 13 13 12