Brock Hall weather by month
What a typical year looks like in Brock Hall, Maryland: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at National Arboretum Dc, 21 km from Brock Hall; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 45.6 in1158 mm
- Snow a year
- 10 in25 cm
- Last spring freeze
- Mar 30
- First fall freeze
- Nov 7
- Heating degree days
- 4,048
- Cooling degree days
- 1,648
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 14°−10° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Brock Hall in January
Highs average 45°7° and lows 28°−2°, with 3 in77 mm of precipitation and 5 in12 cm of snow in a typical January.
- Record high
- 80°27° (1950)
- Record low
- −10°−23° (1982)
- Heating degree days
- 891
- Cooling degree days
- 0
Brock Hall in February
Highs average 48°9° and lows 30°−1°, with 2.8 in70 mm of precipitation and 2.3 in5.8 cm of snow in a typical February.
- Record high
- 82°28° (2000)
- Record low
- −1°−18° (1961)
- Heating degree days
- 738
- Cooling degree days
- 0
Brock Hall in March
Highs average 56°13° and lows 37°3°, with 4 in101 mm of precipitation and 1.4 in3.6 cm of snow in a typical March.
- Record high
- 90°32° (1998)
- Record low
- 7°−14° (2014)
- Heating degree days
- 586
- Cooling degree days
- 3
Brock Hall in April
Highs average 68°20° and lows 46°8°, with 3.4 in87 mm of precipitation in a typical April.
- Record high
- 96°36° (2002)
- Record low
- 18°−8° (1982)
- Heating degree days
- 269
- Cooling degree days
- 29
Brock Hall in May
Highs average 77°25° and lows 57°14°, with 4.3 in110 mm of precipitation in a typical May.
- Record high
- 101°38° (1991)
- Record low
- 25°−4° (1966)
- Heating degree days
- 75
- Cooling degree days
- 129
Brock Hall in June
Highs average 85°30° and lows 66°19°, with 4.6 in116 mm of precipitation in a typical June.
- Record high
- 103°39° (2012)
- Record low
- 42°6° (1984)
- Heating degree days
- 7
- Cooling degree days
- 329
Brock Hall in July
Highs average 90°32° and lows 71°22°, with 4.6 in117 mm of precipitation in a typical July.
- Record high
- 106°41° (2011)
- Record low
- 47°8° (1988)
- Heating degree days
- 0
- Cooling degree days
- 476
Brock Hall in August
Highs average 88°31° and lows 69°20°, with 3.7 in93 mm of precipitation in a typical August.
- Record high
- 104°40° (1997)
- Record low
- 42°6° (1982)
- Heating degree days
- 0
- Cooling degree days
- 422
Brock Hall in September
Highs average 82°28° and lows 62°16°, with 4.1 in105 mm of precipitation in a typical September.
- Record high
- 102°39° (1953)
- Record low
- 34°1° (1989)
- Heating degree days
- 21
- Cooling degree days
- 219
Brock Hall in OctoberThis month
Highs average 70°21° and lows 49°9°, with 4.2 in107 mm of precipitation in a typical October.
- Record high
- 94°34° (1951)
- Record low
- 20°−7° (1966)
- Heating degree days
- 210
- Cooling degree days
- 38
Brock Hall in November
Highs average 58°15° and lows 39°4°, with 3.2 in81 mm of precipitation in a typical November.
- Record high
- 87°31° (1950)
- Record low
- 10°−12° (1987)
- Heating degree days
- 492
- Cooling degree days
- 2
Brock Hall in December
Highs average 49°10° and lows 32°0°, with 3.7 in93 mm of precipitation and 1.3 in3.3 cm of snow in a typical December.
- Record high
- 81°27° (1998)
- Record low
- 0°−18° (1983)
- Heating degree days
- 759
- Cooling degree days
- 1