Slaughter Beach weather by month
What a typical year looks like in Slaughter Beach, Delaware: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lewes, 20 km from Slaughter Beach; records cover 1945–2026.
The year at a glance
- Precipitation a year
- 47.3 in1201 mm
- Snow a year
- 11 in27 cm
- Last spring freeze
- Mar 24
- First fall freeze
- Nov 13
- Heating degree days
- 3,822
- Cooling degree days
- 1,506
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 16°−9° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Slaughter Beach in January
Highs average 46°8° and lows 30°−1°, with 3.4 in86 mm of precipitation and 2 in5.1 cm of snow in a typical January.
- Record high
- 78°26° (1950)
- Record low
- −11°−24° (1982)
- Heating degree days
- 831
- Cooling degree days
- 0
Slaughter Beach in February
Highs average 48°9° and lows 32°0°, with 3.2 in81 mm of precipitation and 7 in17 cm of snow in a typical February.
- Record high
- 86°30° (1997)
- Record low
- 0°−18° (1971)
- Heating degree days
- 700
- Cooling degree days
- 0
Slaughter Beach in March
Highs average 55°13° and lows 38°3°, with 4.2 in107 mm of precipitation and 1 in2.5 cm of snow in a typical March.
- Record high
- 89°32° (1998)
- Record low
- 9°−13° (1950)
- Heating degree days
- 581
- Cooling degree days
- 3
Slaughter Beach in April
Highs average 66°19° and lows 46°8°, with 3.5 in88 mm of precipitation in a typical April.
- Record high
- 92°33° (1957)
- Record low
- 18°−8° (1982)
- Heating degree days
- 287
- Cooling degree days
- 26
Slaughter Beach in May
Highs average 75°24° and lows 56°13°, with 3.4 in86 mm of precipitation in a typical May.
- Record high
- 97°36° (1997)
- Record low
- 27°−3° (1947)
- Heating degree days
- 94
- Cooling degree days
- 103
Slaughter Beach in June
Highs average 83°29° and lows 66°19°, with 3.8 in96 mm of precipitation in a typical June.
- Record high
- 102°39° (1997)
- Record low
- 39°4° (1947)
- Heating degree days
- 7
- Cooling degree days
- 294
Slaughter Beach in July
Highs average 88°31° and lows 71°21°, with 5 in126 mm of precipitation in a typical July.
- Record high
- 101°38° (1995)
- Record low
- 47°8° (1952)
- Heating degree days
- 0
- Cooling degree days
- 439
Slaughter Beach in August
Highs average 86°30° and lows 69°21°, with 4.3 in109 mm of precipitation in a typical August.
- Record high
- 101°38° (1997)
- Record low
- 47°8° (1986)
- Heating degree days
- 0
- Cooling degree days
- 383
Slaughter Beach in September
Highs average 80°26° and lows 64°18°, with 4.5 in114 mm of precipitation in a typical September.
- Record high
- 98°37° (1983)
- Record low
- 37°3° (1950)
- Heating degree days
- 13
- Cooling degree days
- 212
Slaughter Beach in OctoberThis month
Highs average 69°21° and lows 52°11°, with 4.4 in112 mm of precipitation in a typical October.
- Record high
- 92°33° (1954)
- Record low
- 26°−3° (1965)
- Heating degree days
- 170
- Cooling degree days
- 42
Slaughter Beach in November
Highs average 59°15° and lows 42°6°, with 3.6 in91 mm of precipitation in a typical November.
- Record high
- 88°31° (1950)
- Record low
- 16°−9° (1955)
- Heating degree days
- 440
- Cooling degree days
- 4
Slaughter Beach in December
Highs average 50°10° and lows 35°2°, with 4.2 in106 mm of precipitation and 1 in2.5 cm of snow in a typical December.
- Record high
- 77°25° (1998)
- Record low
- 0°−18° (1958)
- Heating degree days
- 699
- Cooling degree days
- 0