climatesince.com

Sussex County, DE

: September 2026 so far averaged 71.9°F in Sussex County, DE, the warmest 1 to 29 September in the county average since 2019, tied 7th warmest of 76 (with 2019) (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

The month

Days of the month without a value
0

Every year on this date

Every 29 September high of the county average in Sussex County, DE since 1951: 70.3°F in 2026; the highest is 86.5°F, in 1954.
1984: 55.8°F1957: 62.1°F1956: 62.7°F1966: 63.5°F2001: 65.2°F1958: 66.9°F, 1970: 66.8°F, 2023: 66.5°F1964: 68.4°F, 1989: 68.1°F, 1992: 67.5°F, 1993: 68.1°F1965: 68.7°F1951: 68.8°F, 1962: 69.1°F, 1991: 68.9°F2022: 70.1°F, 2026: 70.3°F1960: 70.7°F, 1976: 70.9°F, 1981: 71.3°F, 1985: 71.2°F1972: 72.1°F, 1975: 72.3°F, 1983: 71.9°F, 2013: 72.1°F1980: 73.1°F, 2016: 72.6°F1961: 74.3°F, 1969: 73.7°F, 1986: 74.1°F, 1997: 73.5°F, 2000: 73.9°F1977: 74.6°F, 1990: 74.8°F, 2003: 75.1°F1952: 76.3°F, 1955: 76.4°F, 1967: 75.8°F, 1971: 76.1°F, 1978: 76.3°F, 1982: 75.5°F, 1994: 75.8°F, 1996: 75.7°F, 2018: 75.6°F1995: 76.6°F, 2008: 77°F1963: 77.7°F, 1968: 77.8°F, 1979: 77.9°F, 2002: 77.8°F, 2005: 78.3°F, 2006: 77.9°F, 2010: 78.4°F1988: 79.3°F, 1999: 79.3°F, 2009: 78.9°F, 2014: 79.3°F, 2025: 78.6°F1974: 80°F, 2012: 80.2°F1953: 80.5°F, 2004: 80.5°F, 2007: 81.1°F, 2011: 80.9°F, 2017: 81.1°F1973: 81.5°F, 2015: 81.9°F1987: 82°F, 2020: 82.2°F1959: 83.4°F, 1998: 82.5°F2019: 84.3°F, 2021: 83.8°F2024: 84.5°F1954: 86.5°F1954: 86.5°F2026: 70.3°F 2026 70.3°F 1954 86.5°F 55.8°F 86.5°F Normal range
Every 29 September low of the county average in Sussex County, DE since 1951: 60.4°F in 2026; the lowest is 41.2°F, in 1978.
1978: 41.2°F1951: 41.7°F, 1957: 42.2°F, 1991: 41.8°F1958: 43.1°F1981: 44.1°F1989: 44.9°F1970: 45.9°F, 1980: 46.2°F, 1984: 45.6°F, 1985: 46°F, 1993: 45.6°F, 2022: 46.3°F1952: 47.1°F, 1962: 47.2°F, 1965: 47.3°F, 1969: 47.2°F1976: 47.5°F, 2000: 47.5°F1968: 47.7°F, 1975: 48°F, 2001: 47.6°F1961: 48.7°F2006: 50.2°F1953: 50.8°F1964: 52.1°F, 1983: 51.6°F, 1995: 52.1°F, 2005: 51.9°F1955: 53°F, 1956: 52.9°F, 1966: 52.6°F, 1977: 53°F, 1988: 52.8°F, 1990: 53.4°F, 1994: 53.4°F, 2009: 52.5°F1982: 54.4°F, 1998: 54.1°F, 2014: 53.8°F2003: 54.5°F, 2013: 55.3°F1987: 55.5°F, 1992: 56.2°F, 1996: 55.6°F, 2017: 55.7°F1971: 57.2°F, 2002: 57.3°F, 2018: 56.7°F, 2023: 57.2°F1963: 57.5°F1986: 59.3°F, 2007: 58.5°F, 2012: 58.7°F1997: 59.5°F, 2021: 60.4°F, 2026: 60.4°F1954: 61°F, 1972: 60.9°F1960: 62.2°F, 1973: 61.9°F, 1979: 61.8°F, 2016: 62.1°F1967: 62.8°F, 2025: 63°F2008: 64.3°F, 2010: 64.2°F, 2019: 63.5°F2004: 64.6°F, 2015: 64.9°F65°F: 19991974: 65.9°F, 2020: 66.3°F, 2024: 66°F1959: 67.3°F2011: 68.6°F1978: 41.2°F2026: 60.4°F 2026 60.4°F 1978 41.2°F 41.2°F 68.6°F Normal range
Every year as a table
YearHigh, °FLow, °F
202670.360.4
202578.663
202484.566
202366.557.2
202270.146.3
202183.860.4
202082.266.3
201984.363.5
201875.656.7
201781.155.7
201672.662.1
201581.964.9
201479.353.8
201372.155.3
201280.258.7
201180.968.6
201078.464.2
200978.952.5
20087764.3
200781.158.5
200677.950.2
200578.351.9
200480.564.6
200375.154.5
200277.857.3
200165.247.6
200073.947.5
199979.365
199882.554.1
199773.559.5
199675.755.6
199576.652.1
199475.853.4
199368.145.6
199267.556.2
199168.941.8
199074.853.4
198968.144.9
198879.352.8
19878255.5
198674.159.3
198571.246
198455.845.6
198371.951.6
198275.554.4
198171.344.1
198073.146.2
197977.961.8
197876.341.2
197774.653
197670.947.5
197572.348
19748065.9
197381.561.9
197272.160.9
197176.157.2
197066.845.9
196973.747.2
196877.847.7
196775.862.8
196663.552.6
196568.747.3
196468.452.1
196377.757.5
196269.147.2
196174.348.7
196070.762.2
195983.467.3
195866.943.1
195762.142.2
195662.752.9
195576.453
195486.561
195380.550.8
195276.347.1
195168.841.7

Nearby

Georgetown, DE 1.8 mi, the nearest city with its own station