St. Petersburg May 21 Weather Records

Daily averages and all-time records for weather in St. Petersburg, Florida for the date of May 21.
May 21 All-Time Records
1892–2024
Highest temperature 94 °F 2010
Lowest temperature 62 °F 1994
Lowest daily high 75 °F 1996
Highest daily low 78 °F 2015
Most precipitation 2.35 inches 2018
Most snow none -
May 21 Average Weather
1991–2020 1
Average high 86.5 °F
Average low 73.5 °F
Chance precipitation 20.8%
Chance snow 0%
St. Petersburg May 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 86 77 0.65 0.0
2022 86 75 0.00 0.0
2021 85 73 0.00 0.0
2020 89 76 0.00 0.0
2019 n/a n/a 0.00 0.0
2018 79 70 2.35 0.0
2017 86 74 0.00 0.0
2016 85 74 0.00 0.0
2015 89 78 0.00 0.0
2014 88 72 0.00 0.0
2013 88 74 0.53 0.0
2012 87 73 0.00 0.0
2011 88 75 0.00 n/a
2010 94 78 0.00 n/a
2009 82 71 0.79 n/a
2008 87 77 0.00 n/a
2007 86 71 0.00 n/a
2006 88 72 0.00 n/a
2005 85 74 0.00 n/a
2004 88 73 0.00 n/a
2003 87 75 0.00 n/a
2002 81 67 0.00 n/a
2001 89 72 0.00 n/a
2000 87 73 0.00 n/a
1999 87 73 0.00 n/a
1998 89 74 0.00 0.0
1997 89 74 0.00 0.0
1996 75 73 0.78 0.0
1995 84 69 0.00 0.0
1994 77 62 0.00 0.0
1993 83 68 0.00 0.0
1992 85 70 0.00 0.0
1991 82 76 0.00 0.0
1990 82 77 0.00 0.0
1989 87 74 0.00 0.0
1988 90 71 0.00 0.0
1987 88 74 0.00 0.0
1986 85 69 0.93 0.0
1985 89 78 0.00 0.0
1984 89 68 0.00 0.0
1983 88 72 0.00 0.0
1982 88 71 0.00 0.0
1981 86 71 0.00 0.0
1980 90 77 0.20 0.0
1979 84 68 0.00 0.0
1978 90 72 0.00 0.0
1977 92 70 0.00 0.0
1976 86 71 0.13 0.0
1975 92 75 0.00 0.0
1974 90 72 0.00 0.0
1973 88 74 0.00 0.0
1972 82 70 0.00 0.0
1971 86 72 0.00 0.0
1970 90 71 0.00 0.0
1969 87 72 0.00 0.0
1968 88 70 0.00 0.0
1967 90 73 0.00 0.0
1966 88 74 0.00 0.0
1965 87 73 0.00 0.0
1964 92 72 0.00 0.0
1963 90 75 0.00 0.0
1962 87 73 0.00 0.0
1961 85 74 0.00 0.0
1960 90 74 0.03 0.0
1959 91 75 0.00 0.0
1958 85 74 0.01 0.0
1957 90 75 0.00 0.0
1956 92 70 0.00 0.0
1955 87 72 0.00 0.0
1954 81 62 0.00 0.0
1953 92 73 0.00 0.0
1952 86 70 1.77 0.0
1951 87 69 0.00 0.0
1950 86 66 0.00 0.0
1949 87 69 0.00 0.0
1948 85 67 0.00 n/a
1947 88 73 0.00 n/a
1946 88 72 0.00 n/a
1945 89 71 0.00 n/a
1944 89 73 0.00 n/a
1943 87 74 0.00 n/a
1942 85 73 0.00 n/a
1941 86 69 0.00 n/a
1940 90 70 0.00 n/a
1939 86 70 0.00 n/a
1938 90 72 0.00 n/a
1937 91 74 0.00 n/a
1936 83 65 0.80 n/a
1935 88 74 0.02 n/a
1934 87 71 1.60 n/a
1933 91 74 0.00 n/a
1932 87 71 0.00 n/a
1931 85 71 0.91 n/a
1930 92 75 0.00 n/a
1929 89 71 0.61 n/a
1928 83 66 2.05 n/a
1927 91 74 0.00 n/a
1926 81 69 0.02 n/a
1925 87 72 0.00 n/a
1924 87 70 0.00 n/a
1923 84 70 0.03 n/a
1922 89 71 0.10 n/a
1921 88 67 1.77 n/a
1920 84 67 0.00 n/a
1919 78 68 0.44 n/a
1918 87 67 0.66 n/a
1917 85 69 0.00 n/a
1916 88 75 0.00 n/a
1915 91 75 0.00 n/a
1914 n/a n/a n/a n/a
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 n/a n/a n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a n/a n/a
1906 n/a n/a n/a n/a
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 n/a n/a n/a n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 n/a n/a n/a n/a
1895 n/a n/a n/a n/a
1894 n/a n/a n/a n/a
1893 87 76 n/a n/a
1892 88 71 n/a n/a
What's the all-time high for St. Petersburg on 5/21?
For the date of May 21, the highest temperature ever reached in St. Petersburg history is 94 °F which happened in 2010.
Highest Temperatures in St. Petersburg on May 21
Rank Temperature Year
1 94 °F 2010
2 92 °F 1956
2 92 °F 1953
2 92 °F 1977
2 92 °F 1975
2 92 °F 1964
2 92 °F 1930
8 91 °F 1927
8 91 °F 1933
8 91 °F 1937
8 91 °F 1959
8 91 °F 1915
What's the all-time low for St. Petersburg on 5/21?
For the date of May 21, the lowest temperature ever reached in St. Petersburg history is 62 °F which has happened 2 times, most recently in 1994.
Lowest Temperatures in St. Petersburg on May 21
Rank Temperature Year
1 62 °F 1994
1 62 °F 1954
3 65 °F 1936
4 66 °F 1928
4 66 °F 1950
6 67 °F 1921
6 67 °F 2002
6 67 °F 1920
6 67 °F 1918
6 67 °F 1948
Lowest High Temperatures in St. Petersburg on May 21
Rank Temperature Year
1 75 °F 1996
2 77 °F 1994
3 78 °F 1919
4 79 °F 2018
5 81 °F 1954
5 81 °F 2002
5 81 °F 1926
8 82 °F 2009
8 82 °F 1991
8 82 °F 1972
8 82 °F 1990
What's the most it has ever rained in St. Petersburg on 5/21?
For the date of May 21, the most precipitation ever recorded in St. Petersburg history is 2.35 inches which happened in 2018.
All-Time Most Precipitation in St. Petersburg on May 21
Rank Precipitation Year
1 2.35 inches 2018
2 2.05 inches 1928
3 1.77 inches 1952
3 1.77 inches 1921
5 1.60 inches 1934
6 0.93 inches 1986
7 0.91 inches 1931
8 0.80 inches 1936
9 0.79 inches 2009
10 0.78 inches 1996
Weather Station Details
Years Station Coordinates
1999–2024 St Petersburg AP location
1892–1998 St. Petersburg location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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