National Weather Service United States Department of Commerce

Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

Flash flooding likely in northeast Kansas & Missouri into tonight. Widespread extreme heat will develop and persist across much of the Southeast this weekend & next week. Tropical Storm Krosa has formed and will continue to cause heavy rain across Guam & the CNMI through Saturday. Severe storms with flooding rains expected into tonight for portions of the Midwest. Read More >

San Juan, PR

Weather Forecast Office

Monthly Records

Weather.gov > San Juan, PR > Monthly Records

Monthly Records for Primary Climatological Data Sites

(Top 5 for each month)

 

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

* Calculations were made for records with no more than three missing days of data for any variable. 

 

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 80.1°F 2024  73.4°F 1917
 11.07" 2010  0.94" 1960 79.8°F 1981 73.4°F 1907
 9.08" 2020  1.26" 1918 79.4°F 2020 73.6°F 1945
 8.09" 1934  1.29" 1979 78.9°F 2018 73.7°F 1923

February
Wettest Driest Hottest Coolest
 11.69" 2022  0.05" 1941  80.0°F 2010  73.3°F 1951
 8.23" 2020  0.09" 1902  79.9°F 1983  73.3°F 1917
 7.90" 1950  0.20" 1983  79.7°F 2020  73.4°F 1925
 7.84" 1918  0.50" 1901  79.6°F 2017  73.4°F 1918
 7.34" 1954  0.51" 1993  79.3°F 2014  73.6°F 1954

March
Wettest Driest Hottest Coolest
9.38" 1927  Trace 2005  82.2°F 1983  73.8°F 1951
9.27" 2012  0.45" 1951  80.9°F 2024  74.0°F 1907
7.18" 1913  0.46" 1924  80.9°F 1981  74.1°F 1939
6.04" 2017  0.47" 1916  80.7°F 2010  74.1°F 1922
5.41" 1958  0.51" 2014  80.1°F 2014  74.1°F 1917

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 81.6°F 2024 75.0°F 1945
10.06" 2006 0.83" 1928  81.5°F 2020 75.2°F 1923

May
Wettest Driest Hottest Coolest
16.88" 1936  0.44" 1972 84.5°F 2024 76.1°F 1913
14.99" 1965  0.48" 1973 84.1°F 2020 76.7°F 1929
14.54" 2013 0.71" 1925 83.8°F 1980 76.8°F 1918
13.97" 1902 1.04" 1975 83.4°F 1981 77.2°F 1943
13.82" 1932  1.09" 2022 83.3°F 2007 77.3°F 1946

June
Wettest Driest Hottest Coolest
13.60" 2011 0.16" 2012 86.1°F 2024 77.8°F 1913
12.22" 1902 0.29" 1985 85.7°F 2012 78.2°F 1923
11.76" 1938  0.77" 2014 85.6°F 2023 78.4°F 1943
11.29" 2013 0.98" 1997 85.4°F 1983 78.5°F 1939
10.96" 1965 1.24" 1971 85.2°F 2014 78.5°F 1922

July
Wettest Driest Hottest Coolest
14.17" 2013 1.10" 1929 85.7°F 2024 78.7°F 1921
11.23" 1950 1.12" 1974 85.1°F 1980 78.8°F 1913
11.08" 2011 1.41" 1947 85.0°F 2014 78.9°F 1919
10.98" 1901 1.61" 2015 84.9°F 1981 79.1°F 1949
10.97" 1952 1.69" 1971 84.8°F 2009 79.1°F 1925

August
Wettest Driest Hottest Coolest
18.56" 2011 1.53" 1919 85.8°F 2024 78.9°F 1904
14.10" 1944 1.83" 1994 85.2°F 2023 79.0°F 1913
11.31" 1988 1.93" 1982 85.0°F 1980 79.4°F 1921
10.39" 1928 1.94" 1991 84.6°F 2020 79.5°F 1909
10.38" 1899 2.36" 1915 84.6°F 1982 79.6°F 1922

September
Wettest Driest Hottest Coolest
15.79" 2017 1.49" 1940 86.1°F 2024 79.3°F 1910
15.15" 1996 1.73" 1987 85.8°F 2023 79.6°F 1921
14.83" 1989 1.78" 2006 85.0°F 2021 79.6°F 1904
13.68" 1928 1.93" 1961 84.9°F 2019 79.7°F 1922
13.66" 1899 1.98" 1986 84.9°F 2012 79.7°F 1917

October
Wettest Driest Hottest Coolest
15.06" 1970 1.17" 1979 85.6°F 2024 78.3°F 1917
12.15" 1927 1.61" 1915 85.4°F 2023 78.3°F 1913
11.94" 2005 1.63" 1963 84.6°F 2015 79.0°F 1922
11.25" 2006 1.74" 1992 84.4°F 2009 79.1°F 1935
11.10" 1985 1.77" 2015 84.4°F 1980 79.2°F 1936

November
Wettest Driest Hottest Coolest
17.65" 2016 1.48" 1954 82.7°F 2023 77.2°F 1945
15.96" 1979 1.63" 1910 82.5°F 2024 77.2°F 1922
15.64" 1931 1.91" 1980 82.4°F 2012 77.2°F 1898
15.04" 1950 2.31" 1971 82.2°F 2021 77.3°F 1919
13.29" 1915 2.62" 1947 82.2°F 2019 77.3°F 1913

December
Wettest Driest Hottest Coolest
16.81" 1981 0.68" 1963 81.5°F 2019 74.7°F 1917
15.40" 1910 0.98" 1925 81.2°F 2024 74.8°F 1916
12.64" 1922 1.02" 1997 80.8°F 2016 74.8°F 1909
11.79" 2001 1.66" 1914 80.2°F 1980 74.8°F 1906
10.86" 1911 1.69"1916 80.2°F 2013 75.0°F 1923

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

 

Climate Records since 1953

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

* Calculations were made for records with no more than three missing days of data for any variable. 

 

Saint Thomas

January
Wettest Driest Hottest Coolest
4.83" 2006 0.48" 2013 80.8°F 1994 75.0°F 1955
4.67" 1995 0.75" 2021 80.2°F 1995 76.0°F 1956
4.19" 1956 0.76" 2007 80.1°F 1993 76.5°F 1953
3.97" 2008 3.97" 1991 79.9°F 1996 76.6°F 1954
3.62"  1992  0.87" 1976 79.9°F 2024 76.7°F 1958

February
Wettest Driest Hottest Coolest
13.35" 2015 0.42" 1987 81.2°F 1994 75.8°F 1956
3.96" 1954 0.47" 1993  80.9°F 1995 76.2°F 1999
3.79" 1956 0.52" 2010 80.5°F 1993 76.2°F 1955
3.31" 1983 0.58" 1988 80.4°F 2021 76.2°F 1954
3.02" 1982 0.60" 2008 80.4°F 1996 76.6°F 1957

March
Wettest Driest Hottest Coolest
6.23" 2004 0.01" 2008 81.8°F 1993 74.5°F 2018
5.83" 2017 0.36" 1959 81.7°F 1994 76.5°F 2009
4.37" 1961  0.44" 1984 81.3°F 1979 76.5°F 2000
3.95" 2012 0.52" 1991 81.0°F 2010 76.6°F 1955
3.95" 1975 0.58" 2021 81.0°F 1996 77.0°F 2011

April
Wettest Driest Hottest Coolest
11.20" 2003 0.23" 1953 84.0°F 1993 77.4°F 1955
6.66" 1978 0.48" 1985 83.2°F 1995 78.2 °F 2008
6.52" 1986 0.54" 2004 83.2°F 1994 78.4°F 1956
6.22" 2007 0.57" 2000 82.4°F 1979 78.4°F 1954
4.75" 1960 0.67" 1991 82.1°F 1992 78.6°F 1976

May
Wettest Driest Hottest Coolest
9.98" 1979  Trace" 2020 85.9°F 1994 79.3°F 1959
9.80" 1987 0.06" 2008 84.8°F 1995 79.7°F 1957
8.22" 1980 0.28" 2007 83.7°F 2016 79.8°F 1986
8.04" 2011 0.47" 1973 83.5°F 1973 79.8°F 1956
7.00" 1958 0.58" 1975 83.4°F 1993 80.0°F 1963

June
Wettest Driest Hottest Coolest
9.51" 2010 0.07"  2007 86.4°F 1994 80.0°F 1956
8.29" 1956 0.08" 2012 86.4°F 1976 81.0°F 1976
6.97" 1983 0.14"  2014 86.2°F 1996 81.6°F 1981
5.33" 2009 0.18" 2003 85.7°F 2017 81.6°F 1972
5.00" 1973 0.28" 1989 85.7°F 1995 81.7°F 2009

July
Wettest Driest Hottest Coolest
7.75" 2019 0.03" 2007  86.6°F 1979 81.8°F 1956 
7.41" 1958 0.22" 2015 86.5°F 1994 82.1°F 1955
7.40" 2010 0.24" 1956 86.2°F 1993 82.3°F 1954
5.74" 2005 0.74" 1994 86.0°F 2023 82.4°F 1958
4.85" 1963 0.81"  2014 85.9°F 1995 82.6°F 1964

August
Wettest Driest Hottest Coolest
9.14" 2011  0.70" 1993 87.3°F 1994 81.2°F 1956
8.54" 1963 0.98" 1991 87.2°F 1993 82.2°F 1989
8.22" 2005 1.26" 2002 85.8°F 2023 82.3°F 1954
7.76"  2014 1.75" 2015 85.7°F 2020 82.6°F 1955
7.53" 2013 1.75" 2009 85.6°F 1992 82.9°F 1983

September
Wettest Driest Hottest Coolest
14.94" 1953 0.92" 2012 86.3°F 1993 80.3°F 1979
13.89" 2004 1.08" 1986 86.0°F 2023 80.4°F 1954
12.86" 2008 1.42" 1987 85.7°F 1992 81.3°F 1956
11.43" 1979 1.59" 2018 85.6°F 1994 81.6°F 2008
11.03" 1960 1.62" 1983 85.1°F 2020 81.9°F 1974

October
Wettest Driest Hottest Coolest
16.20" 2010 1.95" 2011 85.5°F 1993 78.7°F 1954
12.49" 2005 2.00" 1988 85.4°F 1994 80.3°F 1956
12.45" 1974 2.21" 1979 85.2°F 1992 80.5°F 2010
12.39" 1954 2.22" 1957   84.1°F 2024 80.6°F 1985
11.04" 2008 2.27" 2009  84.1°F 2019 81.0°F 1974

November
Wettest Driest Hottest Coolest
18.39" 2003  0.78" 1962 83.3°F 1994 78.1°F 2010
14.73" 1984 0.90" 1963 83.2°F 1990 78.1°F 1954
10.97" 2013 1.35" 1980 82.8°F 1993 78.8°F 1956
10.36" 1987 1.49" 1973 82.4°F 2023 79.1°F 1982
10.15" 1974 1.62" 1976 82.3°F 2019 79.3°F 1974

December
Wettest Driest Hottest Coolest
9.87" 1960 0.63" 1963 81.8°F 1994 75.7°F 2010
7.45" 1957 0.76" 1956 81.6°F 1993 76.1°F 1964
7.34"  2013 1.12"  2000 81.2°F 2019 76.2°F 1954
6.66"  1981 1.29"  1958 81.1°F 1992 77.0°F 1982
5.93" 1998  1.38" 1991 80.9°F 1987 77.7°F 1974

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

 

Climate Records since 1951

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

* Calculations were made for records with no more than three missing days of data for any variable. 

 

Saint Croix

January
Wettest Driest Hottest Coolest
7.35" 1963 0.40" 2019 81.5°F 2024 73.4°F 2012 
5.26" 2005 0.41" 2018 80.6°F 1973 75.2°F 1979 
4.77" 1952 0.49" 2011 80.0°F 1994 75.5°F 1955 
3.74" 1999 0.50" 2016 79.7°F 1999 75.7°F 1965 
3.42" 1964 0.54" 1977 79.7°F 1998 75.9°F 1956 

February
Wettest Driest Hottest Coolest
4.86" 2022 0.11" 2005 80.2°F 1994 74.8°F 2012
4.23" 1995 0.18" 1983 80.0°F 2019 76.0°F 1956
3.59" 1988 0.30" 1986 79.9°F 2024 76.4°F 1999
3.54" 1956 0.32" 2010 79.9°F 1998 76.4°F 1952
3.51" 1976 0.39" 2019  79.8°F 2021 76.5°F 1982

March
Wettest Driest Hottest Coolest
6.40" 2017 0.02" 2019 81.5°F 2024 75.8°F 1951
4.15" 1985 0.17" 1951 80.6°F 2010 75.9°F 1982
3.81" 2012 0.29" 2023 80.6°F 1983 75.9°F 1955
3.76" 2020 0.29" 2003 80.5°F 1973 76.1°F 1979
3.41" 1972 0.39" 2005 80.3°F 1998 76.8°F 2011

April
Wettest Driest Hottest Coolest
8.53" 2003 Trace 1988 82.0°F 1958 75.7°F 1982
8.24" 1983 0.02" 1997 81.7°F 1973 76.6 °F 1955
7.69" 2017 0.22" 1953 81.3°F 2000 77.3°F 1954
5.38" 1952 0.31" 2004 81.3°F 1987 77.9°F 1979
5.17" 1960 0.46" 1987 81.3°F 1972 78.5°F 1956

May
Wettest Driest Hottest Coolest
14.03" 1981 0.22" 1974 84.4°F 1994 77.1°F 1982
11.38" 2001 0.34" 2023 83.6°F 1988 78.4°F 1979
8.89"  1987 0.35" 2022 83.4°F 1973 79.2°F 1959
8.42" 1979 0.37" 2003 83.3°F 1972 79.4°F 1955
8.09" 2004 0.39" 2002 83.2°F 1977 79.7°F 2011

June
Wettest Driest Hottest Coolest
7.83" 1987 0.10" 2001 85.6 °F 2020 79.5°F 1982
7.31" 2011 0.12" 1985 85.6 °F 1980 80.2°F 1979
7.03" 2010 0.26" 2012 85.1°F 2024 80.6°F 1955
6.34" 1979 0.47" 2014 85.0°F 2023 81.2°F 1956
4.90" 2013 0.49" 2019 85.0°F 1972 81.4 °F 2007

July
Wettest Driest Hottest Coolest
7.62" 1958 0.49" 1976 86.5°F 1989 81.2°F 1956
6.91" 1964 0.77"  2015  85.6°F 2024 81.2°F 1952
6.57" 2011 0.90" 2014 85.3°F 1985 81.4°F 1955
6.17" 1960 0.95" 2009 85.2°F 2020 81.5°F 1951
6.14" 1952 1.08" 2017 85.0°F 2014 81.6°F 2011

August
Wettest Driest Hottest Coolest
11.41"1979 1.35" 2005 86.7°F 2023 81.4°F 1978
11.04" 1989  1.40" 1980 86.5°F 1989 81.4°F 1956
7.80" 1978  1.51" 2009 85.9°F 2020 81.4°F 1955
6.99" 1963  1.53" 1982 85.2°F 2022 81.7°F 1975
6.81" 2011 1.63" 1987 85.1°F 2024 81.9°F 2006

September
Wettest Driest Hottest Coolest
19.15" 1996 0.76" 2023 87.7°F 2023 80.0°F 1954
11.80" 2022 1.07" 1981 85.3°F 1993 80.1°F 1975
9.80" 1953 1.27" 2015 84.9°F 1972 80.3°F 1978
9.03" 1954 1.53" 2021 84.8°F 1997 80.7°F 1955
9.00" 1952 1.64" 2001 84.8°F 2024 81.0 °F 1952

October
Wettest Driest Hottest Coolest
12.95" 1990 1.05" 1964 85.6°F 2023 78.8°F 1954
11.79" 1954 1.10" 2002 84.5°F 2024 80.0°F 2010
10.12" 2006 1.12" 2019 84.3°F 1993 80.3°F 1981
9.09" 2008 1.23" 1960 84.3°F 1972 80.3°F 1951
9.09" 1985 1.39" 2016 83.7°F 2020 80.6°F 2008

November
Wettest Driest Hottest Coolest
18.03" 2003 1.00" 2021 83.9°F 2023 77.5°F 1974
16.34" 1974 1.11" 1976 83.3°F 1997 78.1°F 1979
13.25 " 1987 1.75" 1964 82.2°F 1998 78.3°F 2010
12.70" 1984 1.86" 1997 82.6°F 1980 78.6°F 1977
11.21" 1977 1.92" 2008 82.5°F 1993 78.7°F 1978

December
Wettest Driest Hottest Coolest
14.03" 1960 0.37" 2010 81.3°F 1998 75.8°F 1964
9.07" 1975 0.60" 2022 81.2°F 2024 75.9 °F 2010
7.86" 2001  0.75" 2008 81.2°F 2019 76.4°F 1952
7.53" 1995 0.79" 1963 81.1°F 2023 76.8°F 1954
 6.80" 1957 0.89" 1958 81.0°F 2021 77.0°F 2011

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

 

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