GRAND CANYON NATL PARK, ARIZONA

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(023595)

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 197707
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
1957 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 38.00 m 33.00 28.00 4.00 15.00 4.00
1958 6.00 10.00 -3.00 17.00 28.00 36.00 44.00 48.00 32.00 25.00 -1.00 8.00 -3.00
1959 2.00 -3.00 15.00 21.00 28.00 40.00 49.00 a 46.00 29.00 21.00 10.00 3.00 -3.00
1960 -10.00 2.00 11.00 25.00 24.00 38.00 46.00 43.00 36.00 23.00 8.00 6.00 -10.00
1961 7.00 10.00 8.00 17.00 25.00 31.00 46.00 43.00 32.00 17.00 6.00 -13.00 -13.00
1962 -2.00 -9.00 4.00 22.00 a 25.00 32.00 42.00 45.00 38.00 29.00 12.00 -10.00 -10.00
1963 -14.00 3.00 6.00 9.00 25.00 a 28.00 47.00 46.00 37.00 32.00 15.00 4.00 -14.00
1964 -7.00 3.00 10.00 15.00 22.00 31.00 44.00 40.00 36.00 26.00 4.00 7.00 -7.00
1965 6.00 -4.00 7.00 10.00 13.00 34.00 43.00 39.00 25.00 25.00 14.00 2.00 -4.00
1966 -2.00 a -6.00 -1.00 15.00 30.00 35.00 47.00 50.00 40.00 22.00 11.00 -11.00 -11.00
1967 -12.00 9.00 10.00 14.00 20.00 32.00 48.00 46.00 d 41.00 c 28.00 b 18.00 -7.00 -12.00
1968 6.00 10.00 9.00 18.00 ----- z 30.00 44.00 30.00 31.00 22.00 15.00 3.00 3.00
1969 3.00 11.00 5.00 19.00 30.00 38.00 41.00 50.00 39.00 20.00 18.00 6.00 3.00
1970 1.00 12.00 14.00 14.00 25.00 33.00 35.00 49.00 30.00 15.00 19.00 5.00 1.00
1971 -13.00 2.00 -1.00 17.00 25.00 30.00 31.00 41.00 30.00 c 3.00 a 2.00 -1.00 -13.00
1972 6.00 4.00 13.00 17.00 a 27.00 40.00 42.00 g 47.00 c 37.00 e 13.00 a 13.00 -4.00 -4.00
1973 -3.00 10.00 11.00 19.00 a 27.00 a 36.00 45.00 c 43.00 i 30.00 19.00 a 2.00 a 10.00 -3.00
1974 5.00 b 6.00 a 17.00 21.00 28.00 31.00 37.00 42.00 34.00 a 25.00 c 16.00 -7.00 -7.00
1975 -1.00 0.00 -1.00 8.00 16.00 37.00 e 47.00 f 39.00 b 39.00 e 18.00 j 5.00 h 2.00 i -1.00
1976 5.00 m 19.00 c 7.00 17.00 ----- z 30.00 a 45.00 41.00 37.00 a 27.00 2.00 4.00 2.00
1977 0.00 10.00 11.00 b 16.00 a 18.00 35.00 43.00 ----- z ----- z ----- z ----- z ----- z 0.00
Period of Record Statistics
MEAN -1.16 4.95 7.60 16.55 24.22 33.85 43.17 43.61 34.30 22.11 9.89 1.05 -7.00
S.D. 7.00 7.02 5.71 4.27 4.75 3.57 4.67 4.96 4.33 6.75 6.37 7.72 5.72
SKEW -0.60 -0.21 -0.40 -0.28 -0.96 0.25 -1.25 -0.97 -0.29 -1.17 -0.18 -0.34 0.39
MAX 7.00 19.00 17.00 25.00 30.00 40.00 49.00 50.00 41.00 32.00 19.00 15.00 3.00
MIN -14.00 -9.00 -3.00 8.00 13.00 28.00 31.00 30.00 25.00 3.00 -1.00 -13.00 -14.00
NO YRS 19 20 20 20 18 20 18 18 20 19 19 19 12