MAUNA LOA SLOPE OBS, HAWAII

Monthly Average Temperature (Degrees Fahrenheit)

(516198)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1955 38.87 e 37.25 37.02 a 42.66 b 44.37 48.17 a 44.97 a 45.88 a 46.18 b 44.66 41.57 41.40 42.75
1956 40.16 c 36.50 39.42 42.33 c ----- z 46.39 b 43.20 k 45.00 45.95 44.66 43.86 a 42.53 42.68
1957 39.40 a 35.58 c 41.73 43.40 a 46.11 h 47.94 f 48.59 i 46.88 a 47.63 46.84 45.08 41.97 b 43.17
1958 43.03 45.88 41.95 46.32 48.48 50.75 47.65 47.65 48.82 47.21 45.82 42.23 46.31
1959 43.27 41.29 45.05 46.93 47.53 m 50.97 m 49.50 a 47.18 47.32 47.87 44.74 e 41.61 45.48
1960 42.11 40.66 39.65 42.33 d 46.39 d 47.33 47.26 48.50 48.93 45.16 43.63 41.40 44.45
1961 42.37 42.09 a 43.18 44.45 43.73 49.13 48.03 48.11 46.41 a 44.16 41.87 40.65 44.52
1962 40.94 38.39 38.69 43.02 42.82 46.82 48.21 48.19 o 47.02 c 46.90 44.07 42.98 j 43.69
1963 40.41 b 43.04 39.81 42.03 41.10 44.97 45.02 47.63 47.58 46.05 43.52 44.70 a 43.82
1964 41.08 a 39.45 39.03 41.78 43.69 48.80 46.42 47.31 46.58 45.24 41.18 41.71 43.52
1965 41.56 35.57 39.50 41.93 43.76 47.28 46.03 46.47 45.95 45.74 44.00 41.68 43.29
1966 42.29 40.64 44.19 43.00 46.32 51.72 50.03 48.79 47.60 45.89 43.05 40.81 45.36
1967 39.19 43.36 41.34 41.13 43.44 46.77 47.79 47.16 47.62 45.42 42.03 40.35 43.80
1968 41.42 42.10 43.08 41.45 46.58 47.62 47.52 47.44 45.15 46.21 46.80 42.10 44.79
1969 39.18 c 41.52 39.83 a 43.40 47.08 49.43 48.18 f 46.35 48.75 46.89 44.68 43.45 44.60
1970 41.23 42.12 42.06 39.68 43.84 49.05 46.15 47.13 46.55 45.58 42.10 37.87 43.61
1971 36.56 40.73 42.48 40.23 42.47 47.17 46.92 44.97 44.80 46.27 42.15 39.08 42.82
1972 37.84 38.72 42.55 40.65 42.37 47.25 46.84 46.87 46.43 45.73 45.55 43.90 43.73
1973 44.95 42.39 38.66 45.05 44.05 51.50 47.95 48.23 48.57 46.93 c 42.22 40.47 45.08
1974 40.16 39.00 39.82 c ----- z 42.45 44.95 44.92 47.05 45.53 44.34 40.83 40.30 c 42.67
1975 36.23 38.37 i 41.29 42.50 44.39 47.73 44.81 45.89 46.65 45.40 42.87 39.13 43.35
1976 36.71 37.12 36.71 39.83 42.34 47.38 46.60 46.55 44.40 44.48 ----- z 41.71 42.17
1977 44.44 43.48 a 40.82 41.93 45.00 d 46.67 48.02 47.76 47.10 45.77 44.87 43.35 44.93
1978 42.92 42.75 42.73 41.75 45.74 45.72 45.76 46.24 45.65 45.02 40.62 39.90 43.73
1979 37.46 c 38.00 g 39.89 43.29 b 46.06 46.87 47.47 47.52 47.38 45.85 a 44.98 d 45.03 44.71
1980 42.50 j 45.63 b 40.61 l 44.28 45.48 48.15 48.26 47.87 47.23 46.85 46.90 45.97 46.66
1981 45.26 42.24 a 43.02 43.48 48.92 49.28 50.16 48.18 47.30 46.19 46.20 44.85 46.26
1982 42.05 41.62 c 40.08 43.93 46.27 49.03 48.26 46.92 45.65 47.89 48.13 44.84 45.39
1983 47.48 45.62 47.34 b 43.33 46.66 47.93 50.66 49.53 47.41 b 46.03 47.83 c 43.48 46.94
1984 41.30 a 41.48 45.61 c 44.66 b 45.92 51.28 47.41 b 49.76 d 46.98 47.97 45.48 42.77 45.89
1985 44.37 42.02 40.68 42.40 45.21 48.40 48.82 48.74 48.82 47.60 46.15 45.29 45.71
1986 47.77 46.41 a 46.24 43.80 47.95 50.22 49.11 50.68 48.43 48.23 46.70 47.25 a 47.73
1987 43.52 ----- z 43.85 46.60 45.73 46.38 48.16 49.87 48.10 48.69 45.47 44.47 46.44
1988 43.18 41.41 42.70 a 43.47 47.16 50.02 47.84 49.02 49.30 e 46.16 44.19 d 41.18 45.47
1989 38.31 39.70 42.55 39.50 42.32 47.98 47.53 48.55 48.63 46.32 a 45.93 43.53 a 44.24
1990 42.66 40.52 a 43.05 46.48 b 47.74 50.80 45.85 a 48.85 46.41 b 46.26 45.65 42.05 45.53
1991 43.91 b 44.04 c 40.95 45.05 47.40 47.47 50.85 47.37 48.48 48.10 47.83 44.13 46.30
1992 44.74 43.48 45.21 47.15 48.85 51.62 48.53 47.95 47.90 i 48.32 i 46.82 k 43.82 i 47.19
1993 41.50 m 43.33 h 42.91 h 47.75 h 46.33 k 51.86 h 48.38 k 49.13 l 46.39 h 46.74 j 45.05 j 45.00 j 9999.00
1994 42.65 k 41.58 i 44.13 h 46.12 i 47.38 j 48.84 h 49.42 k 49.09 h 47.47 j 47.97 k 44.95 j 47.05 j 9999.00
1995 47.17 k 42.11 i 45.74 j 46.78 j 47.91 i 52.00 h 49.83 k 48.57 h 51.17 j 48.43 j 45.03 j 45.58 k 9999.00
1996 42.16 l 41.90 i 41.42 k 47.05 h 49.91 i 48.08 j 48.35 h 49.39 i 49.33 j 47.93 i 45.58 k 43.64 j 9999.00
1997 43.88 j 41.81 j 40.36 j 44.52 h 46.36 j 48.81 i 49.93 i 49.31 m 47.48 i 47.91 i 44.29 m 45.02 j 9999.00
1998 47.17 k 47.03 i 46.20 i 45.68 h 47.05 k 51.43 h 49.02 i 48.19 j 47.95 i 47.67 j 45.72 j 44.61 i 9999.00
1999 41.84 l 40.50 i 42.52 h 40.82 h 47.22 k 50.05 h 49.52 j 50.02 i 47.38 i 48.67 k 45.08 j 42.42 k 9999.00
2000 39.17 k 44.03 i 43.20 h 45.72 j 48.36 i 49.50 h 49.03 k 49.33 h 48.42 j 45.98 j 43.24 k 44.30 k 9999.00
2001 45.60 j 41.45 i 42.64 i 43.79 i 46.18 i 46.76 i 48.76 j 49.20 h 48.82 k 47.34 i 47.58 j 45.00 l 9999.00
2002 43.76 j 42.18 k 40.48 j 47.03 45.09 i 50.08 j 50.84 i 49.86 i 49.38 j 47.55 i 49.79 k 45.69 j 47.03
2003 47.00 k 46.18 i 46.14 j 44.14 h 45.43 i 48.48 i 49.43 i 49.48 j 48.57 i 49.43 i 47.72 l 44.64 j 9999.00
2004 43.84 l 45.29 j 41.59 h 42.59 h 45.75 k 49.19 i 48.75 k 50.02 i 47.24 i 44.83 k 44.42 k 43.69 j 9999.00
2005 43.22 m 40.37 i 44.83 h 45.95 i 47.45 j 48.82 h 48.83 k 48.87 h 48.81 i 47.88 k 45.20 j 44.38 j 9999.00
2006 42.60 k 40.16 i 41.02 h 44.03 j 46.32 i 51.24 i 49.40 k 48.15 h 48.97 j 46.75 i 45.30 j 46.30 k 9999.00
2007 45.80 k 42.94 k 44.91 o 45.65 m 47.93 i 49.31 i 49.31 j 48.21 j 46.33 l 47.93 h 43.67 j 40.00 k 9999.00
2008 39.67 m 39.53 i 42.86 j 42.05 i 45.45 k 47.95 i 45.32 i 47.64 j 47.71 i 48.02 i 43.92 l 43.52 j 9999.00
2009 40.87 l 39.63 i 38.64 i 42.48 h 47.60 k 49.52 h 47.64 i 48.38 j 50.26 i 47.25 i 43.61 k 43.48 i 9999.00
2010 46.84 l 43.95 i 43.22 h 43.66 h 49.22 k 50.19 i 51.45 k 50.43 i 49.31 i 45.40 j 44.05 j 41.95 j 9999.00
2011 40.60 k 41.24 i 43.67 h 43.57 i 42.76 j 46.45 h 48.47 k 48.67 h 47.67 i 47.64 j 41.20 j 40.19 j 9999.00
2012 42.15 k 41.08 i 40.76 j 42.62 i 44.52 i 46.53 l 48.76 l 47.33 j 47.13 k 48.70 h 44.63 k 43.44 m 9999.00
2013 41.38 j 39.79 i 40.83 s 38.50 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 41.58 41.25 41.67 43.22 45.20 48.28 47.58 47.62 47.12 46.23 44.40 42.42 44.84
S.D. 2.86 2.80 2.47 2.08 2.10 1.83 1.59 1.29 1.25 1.17 2.07 2.11 1.29
SKEW 0.04 -0.27 0.21 0.26 -0.01 0.30 0.13 0.16 -0.20 0.24 -0.10 0.11 0.25
MAX 47.77 46.41 47.34 47.15 48.92 51.72 50.85 50.68 49.30 48.69 48.13 47.25 47.73
MIN 36.23 35.57 36.71 39.50 41.10 44.95 44.81 44.97 44.40 44.16 40.62 37.87 42.75
NO YRS 37 35 37 38 35 36 35 37 37 37 36 36 26