Trenton September 21 Weather Records

Daily averages and all-time records for weather in Trenton, New Jersey for the date of September 21.
September 21 All-Time Records
1865–2024
Highest temperature 96 °F 1895
Lowest temperature 40 °F 1991
Lowest daily high 57 °F 1871
Highest daily low 73 °F 1895
Most precipitation 3.37 inches 1966
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 75.5 °F
Average low 55.3 °F
Chance precipitation 30.1%
Chance snow 0%
Trenton September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 51 0.00 0.0
2022 81 58 0.00 0.0
2021 77 56 0.00 0.0
2020 65 41 0.00 0.0
2019 85 50 0.00 0.0
2018 76 66 0.00 0.0
2017 85 66 0.00 0.0
2016 85 63 0.00 0.0
2015 71 56 0.00 0.0
2014 78 64 0.00 0.0
2013 80 51 0.83 0.0
2012 76 55 0.00 0.0
2011 76 58 0.07 0.0
2010 77 48 0.00 0.0
2009 76 49 0.00 0.0
2008 81 48 0.00 0.0
2007 83 54 0.00 0.0
2006 68 48 0.00 0.0
2005 83 61 0.00 0.0
2004 80 50 0.00 0.0
2003 75 59 0.00 0.0
2002 85 66 0.00 0.0
2001 79 66 0.27 0.0
2000 74 56 0.00 0.0
1999 65 52 0.52 0.0
1998 89 63 0.12 0.0
1997 65 51 0.00 0.0
1996 76 50 0.00 0.0
1995 78 63 0.00 0.0
1994 81 48 0.00 0.0
1993 65 53 0.61 0.0
1992 75 53 0.00 0.0
1991 67 40 0.00 0.0
1990 67 45 0.00 0.0
1989 87 72 0.06 0.0
1988 76 63 0.00 0.0
1987 75 55 0.04 0.0
1986 74 60 0.18 0.0
1985 83 55 0.00 0.0
1984 75 52 0.00 0.0
1983 82 58 1.90 0.0
1982 66 53 0.00 0.0
1981 74 49 0.00 0.0
1980 84 62 0.00 0.0
1979 70 54 1.64 0.0
1978 85 57 0.00 0.0
1977 65 51 0.00 0.0
1976 67 55 0.00 0.0
1975 69 59 0.08 0.0
1974 80 56 0.28 0.0
1973 64 47 0.00 0.0
1972 60 54 0.13 0.0
1971 72 58 0.36 0.0
1970 84 63 0.00 0.0
1969 66 51 0.00 0.0
1968 83 60 0.00 0.0
1967 80 63 0.87 0.0
1966 65 58 3.37 0.0
1965 90 69 0.00 0.0
1964 68 54 0.00 0.0
1963 62 54 0.07 0.0
1962 61 40 0.00 0.0
1961 81 63 0.89 0.0
1960 73 61 0.00 0.0
1959 79 53 0.00 0.0
1958 64 61 0.87 0.0
1957 85 69 0.00 0.0
1956 62 40 0.00 0.0
1955 70 53 0.00 0.0
1954 67 57 0.30 0.0
1953 80 54 0.13 0.0
1952 75 56 0.00 0.0
1951 84 59 0.00 0.0
1950 66 58 0.09 0.0
1949 69 48 0.00 0.0
1948 71 55 0.00 0.0
1947 80 60 0.00 0.0
1946 74 64 0.33 0.0
1945 80 58 0.00 0.0
1944 78 66 0.00 0.0
1943 73 59 0.00 0.0
1942 67 53 0.00 0.0
1941 78 48 0.00 0.0
1940 90 65 0.11 0.0
1939 68 55 0.00 0.0
1938 61 52 2.67 0.0
1937 70 44 0.00 0.0
1936 78 63 0.01 0.0
1935 82 54 0.00 0.0
1934 75 55 0.00 0.0
1933 67 58 0.00 0.0
1932 86 62 0.00 0.0
1931 88 67 0.00 0.0
1930 83 64 0.00 0.0
1929 61 44 0.00 0.0
1928 76 57 0.00 0.0
1927 70 53 0.00 0.0
1926 76 61 0.00 0.0
1925 82 57 0.00 0.0
1924 68 58 0.03 0.0
1923 74 67 1.40 0.0
1922 73 58 0.00 0.0
1921 72 61 0.67 0.0
1920 74 53 0.02 0.0
1919 87 65 0.00 0.0
1918 60 45 0.17 0.0
1917 80 60 0.00 0.0
1916 73 49 0.00 0.0
1915 74 54 0.15 0.0
1914 93 59 0.00 0.0
1913 77 65 1.19 0.0
1912 74 51 0.00 0.0
1911 n/a n/a n/a n/a
1910 81 61 0.00 0.0
1909 72 55 0.00 0.0
1908 69 51 0.00 0.0
1907 86 67 0.00 0.0
1906 85 70 0.00 0.0
1905 77 62 0.00 0.0
1904 68 48 0.00 0.0
1903 73 48 0.00 0.0
1902 72 65 0.05 0.0
1901 68 51 0.00 0.0
1900 77 65 0.00 0.0
1899 71 62 0.00 0.0
1898 70 48 0.00 0.0
1897 68 46 0.00 0.0
1896 71 50 0.00 0.0
1895 96 73 0.00 0.0
1894 82 60 0.00 0.0
1893 75 50 0.00 0.0
1892 74 n/a 0.00 0.0
1891 86 n/a 0.00 0.0
1890 65 n/a 0.00 0.0
1889 62 n/a 0.08 0.0
1888 76 n/a 0.61 0.0
1887 74 n/a 0.00 0.0
1886 n/a n/a n/a n/a
1885 n/a n/a n/a n/a
1884 n/a n/a n/a n/a
1883 n/a n/a n/a n/a
1882 n/a n/a n/a n/a
1881 n/a n/a n/a n/a
1880 78 n/a 1.10 0.0
1879 65 n/a 0.00 0.0
1878 82 n/a 0.00 0.0
1877 70 n/a 0.00 0.0
1876 72 n/a 0.00 0.0
1875 62 n/a 0.00 0.0
1874 70 n/a 0.00 0.0
1873 62 n/a 0.00 0.0
1872 73 n/a 0.00 0.0
1871 57 n/a 0.00 0.0
1870 75 n/a 0.00 0.0
1869 84 n/a 0.01 0.0
1868 66 n/a 0.00 0.0
1867 72 n/a 1.10 0.0
1866 81 n/a 0.40 0.0
1865 81 n/a 0.00 0.0
What's the all-time high for Trenton on 9/21?
For the date of Sep 21, the highest temperature ever reached in Trenton history is 96 °F which happened in 1895.
Highest Temperatures in Trenton on September 21
Rank Temperature Year
1 96 °F 1895
2 93 °F 1914
3 90 °F 1940
3 90 °F 1965
5 89 °F 1998
6 88 °F 1931
7 87 °F 1989
7 87 °F 1919
9 86 °F 1891
9 86 °F 1907
9 86 °F 1932
What's the all-time low for Trenton on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Trenton history is 40 °F which has happened 3 times, most recently in 1991.
Lowest Temperatures in Trenton on September 21
Rank Temperature Year
1 40 °F 1962
1 40 °F 1991
1 40 °F 1956
4 41 °F 2020
5 44 °F 1937
5 44 °F 1929
7 45 °F 1990
7 45 °F 1918
9 46 °F 1897
10 47 °F 1973
Lowest High Temperatures in Trenton on September 21
Rank Temperature Year
1 57 °F 1871
2 60 °F 1918
2 60 °F 1972
4 61 °F 1962
4 61 °F 1938
4 61 °F 1929
7 62 °F 1873
7 62 °F 1956
7 62 °F 1889
7 62 °F 1875
7 62 °F 1963
What's the most it has ever rained in Trenton on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Trenton history is 3.37 inches which happened in 1966.
All-Time Most Precipitation in Trenton on September 21
Rank Precipitation Year
1 3.37 inches 1966
2 2.67 inches 1938
3 1.90 inches 1983
4 1.64 inches 1979
5 1.40 inches 1923
6 1.19 inches 1913
7 1.10 inches 1880
7 1.10 inches 1867
9 0.89 inches 1961
10 0.87 inches 1958
10 0.87 inches 1967
Weather Station Details
Years Station Coordinates
1999–2024 Trenton Mercer County Airport location
1977–1998 Trenton State College location
1913–1976 Trenton location
1865–1913 Trenton 2 location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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