BOISE WSFO AIRPORT, IDAHO

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(101022)

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
1940 26.29 31.52 34.97 39.03 46.32 53.80 59.16 57.45 51.87 42.68 27.83 27.39 41.53
1941 26.26 30.82 32.71 38.17 45.87 50.37 60.42 57.26 44.67 39.13 32.40 27.87 40.49
1942 12.84 23.79 29.29 39.97 41.77 47.90 59.45 56.77 47.70 39.06 30.83 28.10 38.12
1943 20.84 26.82 30.00 40.93 41.16 48.70 57.65 54.65 50.77 42.39 30.80 24.94 39.14
1944 16.06 26.52 27.16 37.70 44.84 49.43 57.19 54.52 49.77 44.23 32.37 23.32 38.59
1945 26.39 29.93 31.06 33.70 44.23 48.03 58.29 57.55 45.13 41.10 32.07 23.58 39.25
1946 21.13 25.54 33.71 37.93 44.23 50.53 58.74 57.13 46.03 34.35 29.83 28.52 38.97
1947 13.94 28.96 33.32 36.67 48.06 49.63 58.35 56.65 48.20 43.81 28.73 24.23 39.21
1948 24.23 22.90 28.06 37.03 43.58 53.13 54.48 54.55 47.20 38.42 27.47 17.71 37.40
1949 0.52 22.50 33.03 38.53 48.16 50.93 58.29 58.16 50.50 34.42 34.13 23.35 37.71
1950 17.48 25.89 30.87 35.37 40.23 50.20 57.81 56.97 49.80 44.65 33.73 30.26 39.44
1951 22.16 28.86 27.00 36.70 43.84 48.03 59.90 57.65 49.13 38.65 29.83 20.84 38.55
1952 19.52 22.52 28.19 38.73 44.10 51.10 58.32 57.16 49.80 41.90 23.60 27.71 38.55
1953 34.19 26.86 30.81 34.10 40.16 46.27 57.03 56.23 50.27 39.23 34.93 24.13 39.52
1954 28.87 29.32 27.90 36.70 44.61 48.43 59.19 53.55 46.37 36.61 32.63 22.26 38.87
1955 16.39 19.04 26.71 33.43 41.58 52.27 56.39 57.45 47.93 40.16 27.57 28.87 37.32
1956 26.35 18.86 30.84 37.07 46.87 50.53 59.45 54.58 48.77 38.71 26.37 23.97 38.53
1957 12.90 26.79 32.77 37.50 47.13 51.83 57.39 54.71 49.97 38.81 26.97 28.00 38.73
1958 25.03 33.61 30.81 37.83 50.35 54.00 59.32 61.19 47.80 40.52 30.53 29.06 41.67
1959 28.71 29.50 29.71 37.40 40.10 53.70 59.68 55.13 48.13 37.00 21.23 16.71 38.08
1960 15.42 25.76 32.48 35.83 40.52 52.70 64.03 53.84 50.03 39.26 31.27 21.77 38.58
1961 23.26 33.25 34.58 34.47 43.16 56.60 59.26 62.94 43.53 37.32 27.30 24.61 40.02
1962 14.16 26.39 28.61 37.63 43.77 50.23 56.81 55.52 49.60 40.77 31.87 28.42 38.65
1963 14.52 34.04 33.00 37.37 48.74 51.77 55.65 57.77 57.30 46.48 35.60 22.03 41.19
1964 18.16 18.34 28.45 32.43 41.42 51.00 58.42 53.87 45.03 39.48 28.53 27.87 36.92
1965 29.06 27.54 26.16 39.43 41.90 50.90 57.61 57.32 44.07 42.19 35.63 22.48 39.53
1966 24.90 23.93 31.29 35.63 45.68 50.40 55.81 55.77 51.20 34.90 34.43 24.45 39.03
1967 29.52 28.64 31.65 33.40 41.55 52.57 62.68 61.52 54.43 37.74 31.87 20.16 40.48
1968 21.39 32.17 33.81 32.43 44.03 53.87 60.55 56.61 49.23 40.19 34.63 28.71 40.64
1969 27.26 29.82 31.03 37.37 45.94 54.20 56.55 55.32 50.20 34.26 29.07 27.94 39.91
1970 30.68 31.64 31.29 33.33 44.52 56.30 60.58 58.35 43.80 36.19 36.07 27.23 40.83
1971 27.97 29.29 30.81 37.73 47.32 52.57 59.35 63.13 45.80 37.61 31.60 23.68 40.57
1972 24.10 28.69 34.61 34.97 46.29 53.80 57.39 58.90 45.97 40.52 33.50 15.52 39.52
1973 23.23 31.00 32.87 36.97 45.61 53.27 59.23 57.52 49.30 40.71 35.43 32.39 41.46
1974 22.61 30.79 34.00 38.07 41.97 55.43 57.97 55.84 48.83 40.10 32.97 25.77 40.36
1975 20.26 30.25 32.52 35.13 43.32 50.37 62.32 55.71 48.63 41.65 29.73 25.58 39.62
1976 25.48 26.28 27.55 35.40 43.87 47.33 56.68 53.81 50.67 36.90 29.17 16.84 37.50
1977 11.90 22.86 28.42 38.93 42.16 55.47 57.13 59.45 48.40 40.52 30.23 30.97 38.87
1978 30.45 31.25 37.35 38.37 41.42 49.47 56.94 53.39 47.90 36.65 26.47 18.42 39.01
1979 7.13 26.82 32.23 36.93 43.61 51.23 57.81 56.61 51.13 41.77 24.97 27.58 38.15
1980 23.23 32.34 30.84 39.90 45.90 48.43 56.29 50.68 48.70 37.61 30.17 25.19 39.11
1981 28.16 27.00 32.68 38.27 41.90 48.43 53.16 55.97 48.27 36.29 35.00 27.77 39.41
1982 16.74 21.39 31.58 32.63 40.52 51.33 55.65 56.00 46.83 39.32 26.67 23.65 36.86
1983 28.26 34.00 36.52 36.07 44.16 48.87 54.03 59.71 45.43 41.23 33.97 15.90 39.84
1984 14.97 23.76 32.61 35.80 43.03 49.00 58.42 60.65 45.47 35.35 32.50 14.94 37.21
1985 11.32 17.57 25.35 38.10 44.45 51.33 61.55 53.32 43.63 34.77 19.37 3.74 33.71
1986 20.94 33.00 36.39 36.07 44.90 55.73 53.94 59.16 45.57 38.65 30.97 20.00 39.61
1987 19.16 27.79 33.52 39.73 48.32 54.90 55.90 52.87 49.00 38.74 31.70 24.71 39.70
1988 17.55 27.38 30.39 39.53 43.35 55.23 56.00 53.87 46.13 44.52 33.40 20.48 38.99
1989 15.97 14.18 34.48 39.43 41.23 52.97 59.45 55.03 47.90 39.48 28.73 19.90 37.40
1990 26.26 24.54 31.29 40.97 42.97 51.33 59.29 58.74 53.53 37.03 30.47 7.81 38.69
1991 15.52 30.93 32.10 36.57 41.68 47.43 57.77 60.10 50.37 37.71 30.00 22.97 38.59
1992 24.55 31.41 34.52 41.07 47.00 55.23 55.06 56.97 48.07 40.71 27.87 21.87 40.36
1993 18.06 21.39 33.71 37.60 49.32 48.87 50.42 53.32 46.53 39.90 19.97 24.97 37.01
1994 27.03 25.61 32.13 40.00 47.23 51.43 59.97 58.97 50.43 37.61 24.67 23.58 39.89
1995 29.10 30.89 33.58 36.57 44.71 49.87 57.45 54.00 50.50 35.06 35.67 27.06 40.37
1996 26.03 27.07 33.94 38.97 43.74 51.93 60.42 59.77 48.40 40.71 32.30 30.03 41.11
1997 24.90 27.00 34.26 37.70 49.29 53.37 58.19 60.68 54.37 40.23 33.87 23.10 41.41
1998 31.52 32.61 34.16 38.50 46.19 50.77 63.81 60.94 57.70 39.35 36.00 23.68 42.93
1999 28.26 29.46 33.45 35.27 42.58 53.03 57.32 60.58 49.13 40.19 36.70 26.29 41.02
2000 27.45 32.90 32.35 41.60 47.81 53.20 60.13 60.06 49.53 42.06 25.50 25.52 41.51
2001 20.81 25.89 35.35 36.93 47.03 52.40 59.52 62.71 53.93 41.13 34.90 25.06 41.31
2002 25.48 23.71 30.29 38.80 46.35 56.30 64.65 56.74 51.27 37.58 31.33 31.39 41.16
2003 32.52 28.39 36.97 39.63 46.61 54.47 63.77 63.00 52.83 45.32 29.20 30.42 43.59
2004 23.19 27.97 36.23 40.93 47.06 55.57 63.06 61.19 50.97 42.74 30.90 28.77 42.38
2005 26.52 27.25 34.68 38.90 48.42 51.23 62.52 61.84 49.13 41.77 29.50 23.06 41.24
2006 30.23 25.39 33.39 41.30 48.03 57.27 65.87 58.81 51.63 39.10 35.07 23.94 42.50
2007 20.58 29.79 36.84 39.67 48.29 55.87 67.55 59.87 50.93 41.03 31.20 26.32 42.33
2008 22.55 28.45 31.13 34.67 47.71 53.03 62.19 61.23 51.93 42.03 35.70 23.87 41.21
2009 25.71 28.32 32.10 39.00 48.32 56.40 63.87 61.90 56.60 38.81 32.47 19.97 41.96
2010 31.52 33.64 34.71 37.53 42.65 53.97 60.42 59.58 53.23 46.16 31.30 28.81 42.79
2011 24.45 27.04 35.71 35.97 44.13 52.23 59.61 63.26 56.33 44.00 30.90 21.03 41.22
2012 26.48 29.55 37.29 43.00 46.23 52.60 65.61 63.03 53.73 42.16 37.17 31.42 44.02
2013 13.26 27.32 33.97 44.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 13.00 z 24.85
Period of Record Statistics
MEAN 22.43 27.49 32.16 37.44 44.73 51.95 58.93 57.63 49.35 39.72 30.81 24.12 39.74
S.D. 6.47 4.15 2.80 2.32 2.63 2.62 3.10 3.00 3.20 2.85 3.85 5.08 1.80
SKEW -0.74 -0.78 -0.33 -0.18 0.05 0.03 0.36 0.13 0.48 0.14 -0.80 -1.37 -0.16
MAX 34.19 34.04 37.35 43.00 50.35 57.27 67.55 63.26 57.70 46.48 37.17 32.39 44.02
MIN 0.52 14.18 25.35 32.43 40.10 46.27 50.42 50.68 43.53 34.26 19.37 3.74 33.71
NO YRS 74 74 74 73 73 73 73 73 73 73 73 73 73