GRAND CANYON NATL PARK, ARIZONA

Monthly Average 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 50.33 m 43.17 37.03 23.70 24.61 32.13
1958 19.81 24.68 23.00 28.17 40.16 49.43 53.16 54.45 46.93 38.16 26.00 22.10 35.50
1959 19.19 19.18 23.77 33.33 38.13 49.10 56.97 a 52.06 44.17 35.61 26.30 22.10 34.99
1960 13.90 13.79 25.58 31.80 37.84 48.87 53.94 54.26 47.57 34.97 27.57 19.26 34.11
1961 20.81 24.00 24.52 29.80 36.71 48.50 54.16 52.13 41.93 33.68 25.07 16.16 33.96
1962 19.90 24.18 20.77 33.48 a 35.74 43.83 49.29 52.42 46.77 37.84 29.27 19.13 34.39
1963 14.81 24.79 24.10 28.33 38.77 a 43.30 54.65 53.52 47.50 40.81 30.37 18.90 34.99
1964 14.68 15.38 21.45 28.87 36.77 44.97 55.35 51.10 44.63 37.03 23.80 22.39 33.04
1965 23.68 19.57 24.03 28.83 35.45 40.10 51.26 48.29 39.63 35.48 26.93 19.90 32.76
1966 15.40 a 13.68 26.94 30.87 41.00 46.87 54.87 54.65 47.97 36.48 28.50 20.71 34.83
1967 18.48 22.32 27.84 26.77 36.13 43.13 55.16 53.04 d 47.89 c 36.03 b 28.57 14.74 34.18
1968 19.45 28.90 26.55 28.47 ----- z 45.87 51.35 47.03 43.80 36.87 27.73 17.23 33.93
1969 25.32 21.54 20.81 30.37 38.77 44.00 52.58 55.71 47.27 33.32 28.83 24.00 35.21
1970 19.71 26.18 24.16 25.97 38.48 46.93 51.32 53.45 42.57 33.10 28.57 19.90 34.20
1971 19.16 20.00 23.19 29.60 34.48 45.33 53.26 53.77 46.26 c 32.13 a 24.27 18.00 33.29
1972 19.81 23.21 30.26 30.14 a 37.13 46.50 53.88 g 51.43 c 44.52 e 37.50 a 24.00 17.03 32.87
1973 15.65 22.75 22.00 28.45 a 39.47 a 47.80 55.68 c 49.50 i 44.47 34.30 a 26.31 a 22.55 32.67
1974 18.66 b 20.07 a 28.42 29.33 39.55 49.10 51.68 50.42 46.76 a 38.54 c 27.77 18.68 34.91
1975 18.90 17.79 23.58 25.57 35.13 44.76 e 53.52 f 48.93 b 48.56 e 34.00 j 25.82 h 22.68 i 32.90
1976 21.06 m 26.08 c 22.90 27.77 ----- z 44.66 a 51.97 48.65 45.45 a 34.61 27.20 21.39 35.07
1977 19.00 24.39 21.45 b 31.90 a 31.55 44.03 50.90 ----- z ----- z ----- z ----- z ----- z 31.89
Period of Record Statistics
MEAN 18.75 21.62 24.27 29.39 37.29 45.85 53.20 51.96 45.39 35.97 26.88 19.94 34.31
S.D. 2.92 4.17 2.62 2.17 2.33 2.49 2.04 2.47 2.37 2.18 1.99 2.66 0.83
SKEW 0.24 -0.47 0.66 0.22 -0.62 -0.29 0.00 -0.51 -0.70 0.19 -0.23 -0.07 -0.50
MAX 25.32 28.90 30.26 33.48 41.00 49.43 56.97 55.71 48.56 40.81 30.37 24.61 35.50
MIN 13.90 13.68 20.77 25.57 31.55 40.10 49.29 47.03 39.63 32.13 23.70 14.74 32.76
NO YRS 19 20 20 20 18 20 18 18 20 19 19 19 14