MAYAGUEZ CITY, PUERTO RICO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 86.4 86.5 87.3 88.1 89.1 90.2 90.5 90.5 90.3 89.5 88.1 86.5 88.6
Highest Mean Max. Temperature (F) 88.8 89.4 91.0 90.7 92.1 93.3 93.1 93.2 92.6 91.1 89.8 88.9 90.3
Year Highest Occurred 1985 1985 1980 1987 1988 1969 1990 1987 1983 1983 1981 1984 1987
Lowest Mean Max. Temperature (F) 83.3 84.0 84.8 85.7 86.8 87.0 89.2 88.1 88.7 87.6 84.7 83.3 87.1
Year Lowest Occurred 1961 1976 1976 1989 1979 1965 1978 1988 1975 1961 1961 1975 1961
Mean Temperature (F) 75.0 74.8 75.7 76.9 78.5 79.6 79.8 79.9 79.9 79.3 78.0 76.1 77.8
Highest Mean Temperature (F) 77.1 77.5 77.9 80.5 81.4 83.1 82.2 82.7 81.9 81.7 80.5 79.6 79.9
Year Highest Occurred 1979 1979 1981 1987 1987 1969 1983 1990 1987 1990 1987 1987 1987
Lowest Mean Temperature (F) 72.3 72.5 72.4 74.4 75.9 77.0 77.9 77.8 78.2 77.5 75.7 73.7 75.8
Year Lowest Occurred 1965 1975 1976 1974 1974 1976 1974 1974 1961 1974 1961 1964 1974
Mean Min. Temperature (F) 63.5 63.2 64.1 65.7 67.8 68.9 69.1 69.3 69.4 69.1 67.7 65.6 67.0
Highest Mean Min. Temperature (F) 67.5 67.4 68.1 70.2 72.0 72.9 71.5 72.3 72.2 72.9 71.3 70.4 69.5
Year Highest Occurred 1979 1979 1981 1987 1969 1969 1987 1990 1969 1990 1987 1987 1987
Lowest Mean Min. Temperature (F) 60.9 59.5 60.0 61.5 63.9 65.0 66.3 66.3 67.1 67.0 65.4 62.3 64.3
Year Lowest Occurred 1965 1975 1976 1974 1975 1975 1975 1974 1985 1974 1973 1973 1974
Mean Precipitation (in.) 2.29 2.32 3.34 6.43 8.79 9.09 10.99 11.91 11.86 11.30 6.21 2.12 86.65
Highest Precipitation (in.) 15.40 5.60 11.03 28.01 25.01 25.82 32.73 43.11 23.11 20.76 18.44 7.69 202.71
Year Highest Occurred 1961 1972 1961 1964 1963 1964 1961 1963 1964 1962 1963 1981 1963
Lowest Precipitation (in.) 0.08 0.01 0.17 1.15 2.58 0.84 5.40 4.11 4.27 4.83 0.88 0.46 58.45
Year Lowest Occurred 1985 1977 1970 1968 1987 1982 1990 1974 1971 1982 1966 1974 1976
Heating Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
Cooling Degree Days (F) 310. 274. 332. 357. 419. 438. 459. 462. 447. 443. 390. 344. 4675.

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