ADJUNTAS SUBSTN, PUERTO RICO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 79.3 79.5 80.5 81.3 82.5 84.3 84.6 84.9 84.3 83.8 82.3 79.8 82.3
Highest Mean Max. Temperature (F) 81.6 81.5 81.9 83.2 84.3 85.8 85.9 87.4 86.0 85.5 84.6 82.6 87.4
Year Highest Occurred 1998 1996 1993 1995 1995 1995 2000 1987 1997 1998 1980 1997 1987
Lowest Mean Max. Temperature (F) 76.9 76.7 78.5 79.2 80.9 82.7 82.6 83.2 81.8 81.7 79.6 75.1 75.1
Year Lowest Occurred 1976 1976 1976 1971 1971 1976 1971 1983 1988 1985 1974 1975 1975
Mean Temperature (F) 67.1 67.0 67.8 69.5 71.7 73.4 73.5 73.7 73.4 72.7 71.3 68.7 70.8
Highest Mean Temperature (F) 70.4 69.4 71.0 71.9 74.2 75.5 75.5 75.8 75.4 75.2 73.1 71.9 75.8
Year Highest Occurred 1998 1998 1998 1998 1998 1998 1995 1998 1998 1998 1998 1998 1998
Lowest Mean Temperature (F) 65.0 65.0 65.3 67.7 69.7 71.6 71.2 71.7 72.1 70.7 69.3 66.1 65.0
Year Lowest Occurred 1976 1975 1976 1985 1974 1975 1971 1988 1988 1983 1973 1991 1976
Mean Min. Temperature (F) 54.9 54.4 55.0 57.7 60.9 62.4 62.3 62.4 62.4 61.6 60.3 57.5 59.3
Highest Mean Min. Temperature (F) 59.1 58.3 60.8 62.2 65.4 65.4 65.6 65.7 65.8 64.9 64.0 63.7 65.8
Year Highest Occurred 1998 1998 1998 1998 1981 1998 1995 1998 1998 1998 1999 1998 1998
Lowest Mean Min. Temperature (F) 49.9 50.8 52.1 54.7 57.2 59.2 59.2 59.1 59.7 58.3 57.3 53.1 49.9
Year Lowest Occurred 1985 1975 1976 1985 1992 1975 1975 1984 1971 1991 1973 1991 1985
Mean Precipitation (in.) 2.37 2.72 3.81 6.05 8.23 4.83 6.23 8.20 12.13 10.88 5.50 2.72 73.67
Highest Precipitation (in.) 7.82 7.18 10.31 11.17 20.76 13.80 13.33 15.79 32.66 27.69 12.22 7.55 32.66
Year Highest Occurred 1992 1995 1989 1980 1985 1979 1971 1988 1998 1985 1999 1992 1998
Lowest Precipitation (in.) 0.31 0.23 1.24 0.29 1.09 0.19 1.93 2.99 3.95 4.85 0.77 0.10 0.10
Year Lowest Occurred 1985 1994 1981 1997 1974 1982 2000 1984 1986 1993 1980 1985 1985
Heating Degree Days (F) 15. 7. 9. 2. 0. 0. 0. 0. 0. 0. 0. 11. 44.
Cooling Degree Days (F) 80. 64. 94. 138. 208. 250. 263. 269. 250. 239. 188. 122. 2165.

Southeast Regional Climate Center, sercc@climate.ncsu.edu