ROCK SPRINGS FAA AP, WYOMING

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(487845)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.97 46.00 30.68 15.77 8.32 30.55
1949 -4.26 8.00 23.52 32.63 39.84 45.73 53.26 51.58 42.67 28.45 28.60 13.00 30.25
1950 8.55 12.25 20.06 26.90 32.23 42.40 49.97 48.84 41.90 36.26 23.07 21.52 30.33
1951 8.32 18.11 17.10 26.70 37.97 a 41.73 52.68 50.84 40.17 31.35 16.63 10.48 29.34
1952 9.29 9.48 14.84 31.63 39.06 48.37 53.00 52.35 44.93 34.58 13.43 12.74 30.31
1953 21.84 16.29 22.48 25.07 32.74 47.13 56.87 52.45 44.83 33.87 25.63 15.16 32.86
1954 16.84 21.43 17.39 31.87 38.81 44.87 56.19 51.58 44.41 a 32.29 25.63 7.84 32.43
1955 7.74 10.14 14.94 25.13 37.55 44.23 54.00 55.00 43.77 33.32 17.33 18.87 30.17
1956 14.32 7.14 19.58 28.57 41.39 50.27 54.16 50.16 43.60 31.58 18.80 16.90 31.37
1957 3.71 22.61 22.29 27.10 a 37.52 46.27 53.55 52.16 40.40 33.03 15.60 15.61 30.82
1958 6.26 19.89 18.13 25.73 42.35 47.10 50.29 54.68 43.27 32.10 22.03 22.23 32.00
1959 11.65 13.29 20.10 28.37 35.06 49.57 54.58 52.42 42.47 31.65 20.87 15.00 31.25
1960 9.23 6.03 21.13 30.50 38.39 48.40 56.74 50.06 45.47 32.45 21.30 9.10 30.73
1961 12.06 17.39 21.45 27.50 38.74 49.97 53.97 53.32 36.07 28.84 16.33 10.03 30.47
1962 3.48 18.11 13.42 31.93 38.68 45.80 52.32 50.65 43.07 35.03 24.57 16.97 31.17
1963 4.35 20.54 19.26 26.50 40.23 45.73 54.03 53.81 47.13 38.84 24.07 14.68 32.43
1964 9.19 8.17 12.39 26.93 37.23 44.37 ----- z 50.35 41.57 33.45 19.40 13.23 26.93
1965 16.03 14.96 11.39 30.33 34.97 44.23 53.71 50.71 35.33 35.55 26.30 13.32 30.57
1966 9.42 10.29 19.52 25.80 36.81 42.57 53.48 49.42 43.30 27.81 24.40 13.23 29.67
1967 17.39 16.00 22.03 25.17 34.55 43.30 51.19 49.84 42.10 31.58 18.30 4.90 29.70
1968 9.45 16.03 21.61 24.00 32.97 43.73 50.06 46.90 38.53 30.45 17.10 8.68 28.29
1969 16.13 9.21 12.55 30.20 39.94 41.97 51.87 54.16 44.53 25.48 19.00 13.74 29.90
1970 15.13 17.75 17.97 23.23 36.81 44.07 51.48 53.06 34.43 25.61 22.07 10.06 29.31
1971 18.71 15.82 18.35 27.47 36.13 44.43 49.42 52.52 35.20 28.19 15.03 7.13 29.03
1972 10.32 15.34 25.74 27.93 36.00 47.20 49.13 49.74 41.10 32.68 19.60 5.13 29.99
1973 1.58 4.18 20.19 24.93 36.19 45.17 50.29 51.45 39.30 32.48 19.07 15.03 28.32
1974 6.77 11.07 24.87 28.43 36.19 46.83 52.61 46.35 38.03 32.68 20.70 11.48 29.67
1975 10.90 14.86 20.10 22.90 32.48 40.77 53.10 46.06 38.30 28.61 16.00 16.13 28.35
1976 13.00 13.34 17.58 28.17 37.42 42.67 52.84 47.84 41.63 27.74 19.13 13.35 29.56
1977 11.13 17.36 16.13 31.07 35.23 49.63 52.45 49.32 40.00 31.23 20.70 18.81 31.09
1978 15.13 16.61 26.19 29.57 34.23 45.73 51.39 48.06 40.43 32.68 15.17 3.61 29.90
1979 -2.26 14.58 b 24.03 29.83 38.10 45.20 52.61 51.35 45.03 32.87 13.40 14.19 29.91
1980 9.74 16.62 22.29 29.23 38.32 46.63 53.94 48.77 42.90 32.10 21.17 22.48 32.02
1981 15.39 17.07 23.90 32.63 37.65 47.70 53.00 50.26 44.53 29.10 23.37 19.19 32.82
1982 13.48 12.82 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 13.15
1983 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 47.75 n ----- z 20.60 7.77 14.19
1984 14.85 e 11.24 22.71 26.00 38.03 43.73 53.58 54.19 40.43 28.23 21.27 8.42 30.22
1985 4.65 10.50 21.81 34.00 41.77 49.10 57.74 50.16 38.30 30.35 16.53 13.06 30.67
1986 15.65 20.86 28.55 30.60 35.81 50.20 51.00 ----- z 38.80 31.32 21.43 11.32 30.50
1987 8.58 17.93 20.26 32.33 40.94 48.27 52.00 48.77 42.13 33.00 21.10 12.03 31.45
1988 10.90 17.97 19.71 30.43 37.32 51.90 56.48 51.68 42.20 37.48 21.30 9.81 32.27
1989 10.71 2.64 24.55 31.97 37.29 44.83 55.00 50.16 41.77 32.58 25.10 13.03 30.80
1990 15.45 13.89 23.55 32.60 35.03 47.33 53.81 51.55 47.93 31.81 22.27 4.65 31.66
1991 9.42 19.93 22.35 27.50 36.74 47.37 52.58 52.42 43.07 32.65 19.93 7.68 30.97
1992 8.81 19.66 28.45 35.07 42.65 46.63 50.81 52.03 42.53 35.35 18.37 8.77 32.43
1993 7.29 4.04 24.61 28.33 39.48 42.87 46.74 48.45 41.47 31.32 16.27 14.19 28.76
1994 18.16 12.12 b 25.47 a 30.20 41.00 48.37 52.45 53.39 44.10 32.13 17.00 15.58 32.50
1995 12.45 21.25 ----- z 27.53 34.03 b 42.93 50.84 52.65 42.43 30.61 26.77 17.94 32.68
1996 11.68 16.41 20.97 a 28.77 37.90 47.87 53.84 52.03 40.47 30.45 23.97 a 16.58 31.74
1997 12.97 14.48 a 23.48 24.87 38.23 48.33 51.97 52.81 45.53 31.65 19.40 9.32 31.09
1998 17.35 16.39 19.84 28.90 38.23 41.53 55.94 53.58 48.07 34.16 25.03 12.77 32.65
1999 17.97 16.93 24.58 26.69 a 35.58 45.43 54.71 53.68 39.73 33.35 25.33 ----- z 34.00
2000 16.77 20.72 22.94 31.87 40.52 46.03 54.77 55.58 39.97 33.26 12.50 12.13 32.25
2001 11.97 11.86 24.35 31.27 39.06 46.87 55.90 53.71 45.59 a 32.29 22.03 10.20 a 32.09
2002 11.52 11.07 17.77 28.73 36.48 47.77 57.35 51.19 43.63 28.06 19.57 17.16 30.86
2003 22.71 13.93 24.97 30.77 38.87 45.27 58.16 56.42 42.97 35.90 17.23 14.97 33.51
2004 7.81 9.90 25.39 31.63 38.71 45.77 52.71 50.55 42.83 35.00 22.87 18.42 31.80
2005 19.26 14.29 23.19 27.87 37.19 43.63 54.32 50.19 41.60 35.19 23.20 12.35 31.86
2006 14.94 11.75 20.58 30.17 38.39 49.30 57.81 52.00 40.90 30.58 21.97 13.29 31.81
2007 3.61 19.25 27.29 30.00 38.29 48.67 57.74 54.81 43.70 34.81 23.67 10.48 32.69
2008 4.00 13.97 19.74 24.03 35.19 44.73 55.26 51.74 41.13 32.16 25.37 12.19 29.96
2009 15.19 17.18 20.48 28.80 39.77 43.97 52.55 49.97 45.10 27.13 21.60 6.94 30.72
2010 11.39 14.82 21.94 28.10 32.39 45.80 53.35 50.71 42.90 35.13 19.30 17.03 31.07
2011 13.81 j 11.21 24.39 27.63 34.19 44.70 54.65 54.42 45.10 36.21 b 18.57 13.00 33.10
2012 18.19 16.62 27.68 32.43 38.58 48.67 56.90 56.13 46.17 32.74 27.83 14.39 34.69
2013 9.45 17.11 24.90 30.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z -9.00 z 17.15
Period of Record Statistics
MEAN 11.33 14.42 21.27 28.76 37.41 45.99 53.43 51.50 42.17 32.06 20.58 12.82 30.96
S.D. 5.41 4.52 3.91 2.78 2.47 2.50 2.39 2.30 2.96 2.76 3.72 4.28 1.36
SKEW -0.43 -0.54 -0.51 -0.05 -0.16 0.06 -0.06 -0.13 -0.50 -0.19 -0.04 0.06 0.13
MAX 22.71 22.61 28.55 35.07 42.65 51.90 58.16 56.42 48.07 38.84 28.60 22.48 34.69
MIN -4.26 2.64 11.39 22.90 32.23 40.77 46.74 46.06 34.43 25.48 12.50 3.61 28.29
NO YRS 63 64 62 62 62 62 61 62 63 63 64 63 57