Deer Park weather by month
What a typical year looks like in Deer Park, Maryland: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Oakland 1 SE, 7 km from Deer Park; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 50.8 in1290 mm
- Snow a year
- 105 in266 cm
- Last spring freeze
- May 11
- First fall freeze
- Oct 6
- Heating degree days
- 6,065
- Cooling degree days
- 520
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Deer Park in January
Highs average 37°3° and lows 18°−8°, with 3.9 in99 mm of precipitation and 30 in77 cm of snow in a typical January.
- Record high
- 75°24° (1914)
- Record low
- −40° (1912)
- Heating degree days
- 1162
- Cooling degree days
- 0
Deer Park in February
Highs average 40°5° and lows 20°−7°, with 3.6 in90 mm of precipitation and 22 in56 cm of snow in a typical February.
- Record high
- 76°24° (1932)
- Record low
- −29°−34° (1907)
- Heating degree days
- 979
- Cooling degree days
- 0
Deer Park in March
Highs average 49°9° and lows 27°−3°, with 4.3 in110 mm of precipitation and 20 in50 cm of snow in a typical March.
- Record high
- 83°28° (1904)
- Record low
- −20°−29° (1960)
- Heating degree days
- 845
- Cooling degree days
- 0
Deer Park in April
Highs average 61°16° and lows 37°3°, with 4.3 in110 mm of precipitation and 4 in9 cm of snow in a typical April.
- Record high
- 88°31° (1921)
- Record low
- −2°−19° (1923)
- Heating degree days
- 484
- Cooling degree days
- 4
Deer Park in May
Highs average 70°21° and lows 48°9°, with 5.3 in136 mm of precipitation in a typical May.
- Record high
- 89°32° (1911)
- Record low
- 17°−8° (1943)
- Heating degree days
- 222
- Cooling degree days
- 31
Deer Park in June
Highs average 77°25° and lows 56°13°, with 4.9 in125 mm of precipitation in a typical June.
- Record high
- 95°35° (1936)
- Record low
- 26°−3° (1930)
- Heating degree days
- 53
- Cooling degree days
- 99
Deer Park in July
Highs average 81°27° and lows 60°16°, with 5.1 in131 mm of precipitation in a typical July.
- Record high
- 98°37° (1933)
- Record low
- 33°1° (1909)
- Heating degree days
- 11
- Cooling degree days
- 188
Deer Park in August
Highs average 80°26° and lows 58°15°, with 4.3 in110 mm of precipitation in a typical August.
- Record high
- 101°38° (1918)
- Record low
- 30°−1° (1930)
- Heating degree days
- 21
- Cooling degree days
- 143
Deer Park in September
Highs average 74°23° and lows 51°11°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 95°35° (1932)
- Record low
- 19°−7° (1942)
- Heating degree days
- 127
- Cooling degree days
- 49
Deer Park in OctoberThis month
Highs average 63°17° and lows 40°4°, with 3.6 in92 mm of precipitation and 1.6 in4.1 cm of snow in a typical October.
- Record high
- 88°31° (1927)
- Record low
- 7°−14° (1930)
- Heating degree days
- 426
- Cooling degree days
- 6
Deer Park in November
Highs average 52°11° and lows 30°−1°, with 3.4 in86 mm of precipitation and 6 in16 cm of snow in a typical November.
- Record high
- 78°26° (1929)
- Record low
- −16°−27° (1930)
- Heating degree days
- 732
- Cooling degree days
- 0
Deer Park in December
Highs average 42°5° and lows 24°−5°, with 4.3 in109 mm of precipitation and 21 in54 cm of snow in a typical December.
- Record high
- 74°23° (1951)
- Record low
- −32°−36° (1917)
- Heating degree days
- 1003
- Cooling degree days
- 0