St. Petersburg September 21 Weather Records

Daily averages and all-time records for weather in St. Petersburg, Florida for the date of September 21.
September 21 All-Time Records
1892–2024
Highest temperature 94 °F 1960
Lowest temperature 67 °F 1938
Lowest daily high 78 °F 1962
Highest daily low 80 °F 2016
Most precipitation 4.75 inches 1988
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 87.7 °F
Average low 76.4 °F
Chance precipitation 40.3%
Chance snow 0%
St. Petersburg September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 90 76 0.00 0.0
2022 88 79 0.03 0.0
2021 89 77 1.60 0.0
2020 86 77 0.00 0.0
2019 87 76 0.00 0.0
2018 91 79 0.04 0.0
2017 91 79 0.00 0.0
2016 88 80 0.18 0.0
2015 92 79 0.00 0.0
2014 86 75 0.00 0.0
2013 88 78 0.00 0.0
2012 87 75 0.35 0.0
2011 91 80 0.00 n/a
2010 90 78 0.00 n/a
2009 91 79 0.00 n/a
2008 90 77 0.00 n/a
2007 88 76 0.13 n/a
2006 86 72 0.00 n/a
2005 92 80 0.00 n/a
2004 82 76 0.28 n/a
2003 90 79 0.00 n/a
2002 90 79 0.20 n/a
2001 87 77 0.00 n/a
2000 88 79 0.00 n/a
1999 84 76 0.21 n/a
1998 89 77 0.00 0.0
1997 91 77 0.00 0.0
1996 87 71 1.11 0.0
1995 87 76 0.00 0.0
1994 84 73 0.00 0.0
1993 91 77 0.00 0.0
1992 92 78 0.00 0.0
1991 86 72 2.07 0.0
1990 91 79 0.00 0.0
1989 89 73 0.00 0.0
1988 88 70 4.75 0.0
1987 92 79 0.00 0.0
1986 89 75 0.00 0.0
1985 89 72 0.00 0.0
1984 90 75 0.00 0.0
1983 86 78 0.52 0.0
1982 88 70 2.22 0.0
1981 85 72 0.00 0.0
1980 92 77 0.00 0.0
1979 89 76 0.29 0.0
1978 91 75 0.00 0.0
1977 88 77 0.00 0.0
1976 89 77 0.03 0.0
1975 90 76 0.00 0.0
1974 90 76 0.00 0.0
1973 90 75 0.00 0.0
1972 92 77 0.00 0.0
1971 89 76 0.00 0.0
1970 92 78 0.00 0.0
1969 87 77 0.50 0.0
1968 n/a 74 0.08 0.0
1967 90 77 0.00 0.0
1966 86 76 0.06 0.0
1965 89 76 0.00 0.0
1964 87 73 0.00 0.0
1963 86 75 0.07 0.0
1962 78 72 2.50 0.0
1961 92 75 0.00 0.0
1960 94 76 0.00 0.0
1959 90 73 0.00 0.0
1958 88 75 0.26 0.0
1957 91 78 0.00 0.0
1956 89 73 0.00 0.0
1955 88 74 0.00 0.0
1954 88 75 0.00 0.0
1953 86 73 0.25 0.0
1952 84 74 0.55 0.0
1951 91 76 0.00 0.0
1950 89 71 0.00 0.0
1949 92 71 0.90 0.0
1948 89 72 0.08 0.0
1947 90 75 0.00 n/a
1946 89 73 0.00 n/a
1945 92 74 0.49 n/a
1944 92 77 0.02 n/a
1943 90 76 0.00 n/a
1942 90 79 0.02 n/a
1941 83 74 0.09 n/a
1940 84 74 0.60 n/a
1939 85 74 0.00 n/a
1938 82 67 0.00 n/a
1937 89 80 0.00 n/a
1936 91 76 0.03 n/a
1935 84 72 0.28 n/a
1934 89 72 0.00 n/a
1933 92 79 0.00 n/a
1932 87 76 0.00 n/a
1931 92 75 0.32 n/a
1930 92 77 0.45 n/a
1929 81 71 0.28 n/a
1928 90 75 0.34 n/a
1927 86 72 0.00 n/a
1926 89 75 0.15 n/a
1925 93 77 0.00 n/a
1924 88 77 0.01 n/a
1923 89 75 0.00 n/a
1922 n/a 70 0.10 n/a
1921 92 77 0.00 n/a
1920 88 78 0.00 n/a
1919 91 77 0.00 n/a
1918 85 71 0.03 n/a
1917 87 75 0.04 n/a
1916 87 71 0.00 n/a
1915 89 76 0.00 n/a
1914 88 74 0.00 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 88 75 n/a n/a
1892 87 72 n/a n/a
What's the all-time high for St. Petersburg on 9/21?
For the date of Sep 21, the highest temperature ever reached in St. Petersburg history is 94 °F which happened in 1960.
Highest Temperatures in St. Petersburg on September 21
Rank Temperature Year
1 94 °F 1960
2 93 °F 1925
3 92 °F 1970
3 92 °F 2015
3 92 °F 1961
3 92 °F 1921
3 92 °F 1945
3 92 °F 1987
3 92 °F 1949
3 92 °F 1930
3 92 °F 1972
3 92 °F 1933
3 92 °F 1992
3 92 °F 1980
3 92 °F 2005
3 92 °F 1931
3 92 °F 1944
What's the all-time low for St. Petersburg on 9/21?
For the date of Sep 21, the lowest temperature ever reached in St. Petersburg history is 67 °F which happened in 1938.
Lowest Temperatures in St. Petersburg on September 21
Rank Temperature Year
1 67 °F 1938
2 70 °F 1988
2 70 °F 1982
2 70 °F 1922
5 71 °F 1950
5 71 °F 1918
5 71 °F 1949
5 71 °F 1929
5 71 °F 1916
5 71 °F 1996
Lowest High Temperatures in St. Petersburg on September 21
Rank Temperature Year
1 78 °F 1962
2 81 °F 1929
3 82 °F 1938
3 82 °F 2004
5 83 °F 1941
6 84 °F 1999
6 84 °F 1952
6 84 °F 1940
6 84 °F 1994
6 84 °F 1935
What's the most it has ever rained in St. Petersburg on 9/21?
For the date of Sep 21, the most precipitation ever recorded in St. Petersburg history is 4.75 inches which happened in 1988.
All-Time Most Precipitation in St. Petersburg on September 21
Rank Precipitation Year
1 4.75 inches 1988
2 2.50 inches 1962
3 2.22 inches 1982
4 2.07 inches 1991
5 1.60 inches 2021
6 1.11 inches 1996
7 0.90 inches 1949
8 0.60 inches 1940
9 0.55 inches 1952
10 0.52 inches 1983
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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