Monthly Records for Primary Climatological Data Sites

(Top 5 for each month)

San Juan International Airport St. Thomas/Cyril E. King Airport St. Croix/Henry E. Rohlsen Airport

Climate Records since 1898

Wettest -Highest total rainfall for the calendar month/ Driest- Lowest total rainfall for the calendar month

Hottest - Highest average temperatures for the calendar month/ Coolest - Lowest average temperature for the calendar month

* Most Recent Occurrence

 

San Juan

January

Wettest Driest Hottest Coolest
 15.47" 1937  0.61" 1978 80.2°F 2014 73.3°F 1950
 12.45" 1902  0.69" 1983 79.8°F 1981   73.4°F 1917*
 11.07" 2010  0.94" 1960 78.9°F 1973  73.6°F 1945
 8.09" 1934  1.26" 1918   78.7°F 1998  73.7°F 1923
 8.07" 1943  1.29" 1979 78.5°F 1983* 73.8°F 1937*

February

Wettest Driest Hottest Coolest
 7.90" 1950  0.05" 1941  80.0°F 2010  73.3°F 1951*
 7.84" 1918  0.09" 1902  79.9°F 1983  73.4°F 1925*
 7.34" 1954  0.20" 1983  79.3°F 2014*  73.6°F 1950*
 6.69" 1982  0.50" 1901  79.2°F 1978  73.7°F 1923*
 6.48" 1904  0.51" 1993  79.1°F 2015  73.8°F 1946*

March

Wettest Driest Hottest Coolest
 9.38" 1927  0.00" 2005  82.2°F 1983  73.8°F 1951
 9.27" 2012  0.45" 1951  80.9°F 1981  74.0°F 1907
 7.18" 1913  0.46" 1924  80.7°F 2010  74.1°F 1939*
 5.41" 1958  0.47" 1916  80.1°F 2014*  74.2°F 1923*
 5.24" 1933  0.51" 2014  79.9°F 2007  74.5°F 1955*

April

Wettest Driest Hottest Coolest
 15.00" 2005  0.08" 1997 82.5°F  2014  74.3°F 1922
  13.17" 1915  0.28" 1984 81.8°F 1984 74.6°F 1921
10.37" 1988 0.42" 1935  81.7°F 1983 74.7°F 1938
10.23" 1940 0.50" 1968  81.5°F 2015*  75.0°F 1945
10.06" 2006 0.83" 1928  81.1°F 1987  75.2°F 1923*

May

Wettest Driest Hottest Coolest
16.88" 1936   0.44" 1972  83.8°F 1980  76.1°F 1913
14.99" 1965   0.48" 1973  83.4°F 1981  76.7°F 1929
14.54"  2013 0.71" 1925 83.3°F 2007 76.8°F 1918
13.97" 1902 1.04" 1975  83.2°F 1983  77.2°F 1943
 13.82" 1932  1.13" 1923  83.1°F 2015  77.3°F 1946*

June

Wettest Driest Hottest Coolest
13.60" 2011 0.16" 2012 85.7°F 2012 77.8°F 1913
12.22" 1902 0.29" 1985 85.4°F 1983 78.2°F 1923
11.76" 1938  0.77" 2014 85.2°F 2014 78.4°F 1943
11.29"  2013 0.98" 1997 85.1°F 1980 78.5°F 1939*
10.96" 1965 1.24" 1971 84.2°F 1988* 78.6°F 1914

July

Wettest Driest Hottest Coolest
14.17"  2013 1.10" 1929 85.1°F 1980 78.7°F 1921
11.23" 1950 1.12" 1974 85.0°F 2014 78.8°F 1913
11.08" 2011 1.41" 1947 84.9°F 1981 78.9°F 1919
10.98" 1901 1.69" 1971 84.8°F 2009 79.1°F 1949*
10.97" 1952 1.75" 2008 84.2°F 1995* 79.3°F 1941*

August

Wettest Driest Hottest Coolest
18.56" 2011 1.53" 1919 85.0°F 1980 78.9°F 1904
14.10" 1944 1.83" 1994 84.6°F 1982 79.0°F 1913
11.31" 1988 1.93" 1982 84.5°F 1995 79.4°F 1921
10.39" 1928 1.94" 1991 84.4°F 2009 79.5°F 1909
10.38" 1899 2.36" 1915 84.2°F 2010* 79.6°F 1922*

September

Wettest Driest Hottest Coolest
15.17" 1996 1.49" 1940 84.9°F 2012* 79.2°F 1910
14.83" 1989 1.74" 1987 84.5°F 1982* 79.5°F 1921
13.68" 1928 1.78" 2006 84.4°F 2013 79.6°F 1904
13.66" 1899 1.93" 1961 84.3°F 1981* 79.7°F 1922*
11.64" 1910 1.99" 1986 84.2°F 1983* 79.8°F 1946*

October

Wettest Driest Hottest Coolest
15.06" 1970 1.17" 1979 84.4°F 2009* 78.3°F 1917*
12.15" 1927 1.61" 1915 84.2°F 2014 79.0°F 1922
11.94" 2005 1.63" 1963 84.0°F 1992 79.1°F 1935
11.25" 2006 1.74" 1992 83.9°F 2012 79.2°F 1936*
11.10" 1985 1.84" 1991 83.8°F 2013 79.3°F 1904

November

Wettest Driest Hottest Coolest
15.96" 1979 1.48" 1954 82.4°F 2012 77.2°F 1945*
15.64" 1931 1.63" 1910 82.2°F 1980 77.3°F 1919*
15.04" 1950 1.91" 1980 81.8°F 1978 77.4°F 1961*
13.29" 1915 2.31" 1971 81.6°F 1981 77.5°F 1966*
12.44" 1977 2.62" 1947 81.4°F 1983 77.6°F 1949

December

Wettest Driest Hottest Coolest
16.81" 1981 0.68" 1963 80.7°F 1980 74.7°F 1917
15.40" 1910 0.98" 1925 80.2°F 2013* 74.8°F 1916*
12.64" 1922 1.02" 1997 80.1°F 1997 75.0°F 1923*
11.79" 2001 1.66" 1914 80.0°F 1995 75.2°F 1922
10.86" 1911 1.69"1916 79.8°F 1983 75.3°F 1952*

Click here to return to unique local climate data web page for the NWS San Juan

Updated May , 2015. 


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