Dover Weather Records

Dover, Delaware weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Dover, Delaware was 104 °F which occurred on July 10, 1936.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Dover, Delaware was -11 °F which occurred on February 9, 1934.
Lowest Temperatures: All-Time By Year
Dover Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 44.5 27.7 77 -7 3.3 3.8
February 47.6 29.2 80 -11 2.9 5.6
March 54.7 35.7 88 7 4.2 1.0
April 66.1 45.1 97 14 3.6 0.0
May 74.5 54.5 98 28 3.7 0.0
June 82.8 63.9 101 41 4.4 0.0
July 87.0 69.1 104 45 4.3 0.0
August 85.2 67.4 102 35 4.5 0.0
September 79.5 61.2 99 30 4.1 0.0
October 69.0 49.6 95 25 3.6 0.0
November 58.1 39.3 85 11 3.2 0.0
December 48.8 32.3 75 -3 3.8 2.2
Entire year 66.6 48.1 104 -11 44.1 12.2
More Dover Weather Records
1893–2024
Highest daily low 85 °F August 15, 1908
Lowest daily high 11 °F January 21, 1985
Greatest daily range
(Difference of high and low)
52 °F March 29, 1921
Greatest difference in daily high
over two conscutive days
43 °F Jan 29–30, 1934
Most daily precipitation 8.5 inches July 13, 1975
Most monthly precipitation 16.1 inches August 1939
Most yearly precipitation 65.9 inches 2018
Most yearly days with precipitation 158 1948
Earliest snow in season October 10 1979
Latest snow in season April 14 1940
Most daily snow 25.0 inches February 19, 1979
Most monthly snow 38.0 inches February 2010
Most yearly snow 56.6 inches 2010
Most snow in a winter 65.6 inches 2009–2010
Greatest snow accumulation 25.0 inches February 17, 2003
Earliest freeze September 8 1924
Earliest day ≥ 80 °F February 25 1930
Earliest day ≥ 90 °F April 7 1929
Earliest day ≥ 100 °F June 12 1914
Latest freeze May 12 1923
Latest day ≥ 80 °F November 18 1921
Latest day ≥ 90 °F October 10 1939
Latest day ≥ 100 °F August 31 1953
Most days in a year < 0 °F 3 1912
Most days in a year < 32 °F 104 1915
Most days in a year ≥ 80 °F 133 2010
Most days in a year ≥ 90 °F 56 2010
Most days in a year ≥ 100 °F 7 1988
Dover Weather Streaks
Most consecutive days...
With precipitation 12 days Apr 15–26, 1987
Without precipitation 37 days Aug 26 – Oct 1, 1941
With snow 5 days Jan 4–8, 2010
High temperature at or
below freezing
14 days Feb 6–19, 1979
High temperature ≥ 80 °F 78 days Jun 16 – Sep 1, 2011
High temperature ≥ 90 °F 15 days Jul 23 – Aug 6, 1995
High temperature ≥ 100 °F 3 days Jul 6–8, 2010
Plant Hardiness Zone
7B
Dover is in plant hardiness zone 7B
based on average yearly minimum temperature from 1991–2020
Dover Weather by Year
More Dover Weather
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Weather Station Details
Years Station Coordinates
1893–2024 Dover location