Columbia weather by month
What a typical year looks like in Columbia, Maryland: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Maryland Science Center, 23 km from Columbia; records cover 1950–2026.
The year at a glance
- Precipitation a year
- 43.7 in1111 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 20
- First fall freeze
- Nov 23
- Heating degree days
- 3,857
- Cooling degree days
- 1,748
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 99°37° (cooling, 1%).
Month by month
Columbia in January
Highs average 44°7° and lows 30°−1°, with 3.1 in78 mm of precipitation in a typical January.
- Record high
- 80°27° (2024)
- Record low
- −4°−20° (1994)
- Heating degree days
- 873
- Cooling degree days
- 0
Columbia in February
Highs average 47°8° and lows 32°0°, with 2.8 in70 mm of precipitation in a typical February.
- Record high
- 84°29° (1985)
- Record low
- 3°−16° (2015)
- Heating degree days
- 718
- Cooling degree days
- 0
Columbia in March
Highs average 55°13° and lows 39°4°, with 3.9 in100 mm of precipitation in a typical March.
- Record high
- 97°36° (1998)
- Record low
- 12°−11° (1962)
- Heating degree days
- 562
- Cooling degree days
- 3
Columbia in April
Highs average 67°19° and lows 48°9°, with 3.6 in90 mm of precipitation in a typical April.
- Record high
- 98°37° (1985)
- Record low
- 21°−6° (1982)
- Heating degree days
- 254
- Cooling degree days
- 29
Columbia in May
Highs average 76°24° and lows 58°14°, with 3.4 in86 mm of precipitation in a typical May.
- Record high
- 100°38° (1969)
- Record low
- 36°2° (1966)
- Heating degree days
- 70
- Cooling degree days
- 130
Columbia in June
Highs average 85°30° and lows 68°20°, with 3.4 in85 mm of precipitation in a typical June.
- Record high
- 106°41° (2012)
- Record low
- 48°9° (1972)
- Heating degree days
- 4
- Cooling degree days
- 351
Columbia in July
Highs average 90°32° and lows 73°23°, with 4.7 in120 mm of precipitation in a typical July.
- Record high
- 108°42° (2011)
- Record low
- 58°14° (1979)
- Heating degree days
- 0
- Cooling degree days
- 511
Columbia in August
Highs average 87°31° and lows 71°22°, with 4.4 in110 mm of precipitation in a typical August.
- Record high
- 106°41° (2007)
- Record low
- 52°11° (1986)
- Heating degree days
- 0
- Cooling degree days
- 439
Columbia in September
Highs average 80°27° and lows 65°18°, with 4.5 in114 mm of precipitation in a typical September.
- Record high
- 102°39° (1998)
- Record low
- 40°4° (1974)
- Heating degree days
- 14
- Cooling degree days
- 238
Columbia in OctoberThis month
Highs average 69°20° and lows 53°11°, with 3.5 in89 mm of precipitation in a typical October.
- Record high
- 95°35° (2007)
- Record low
- 30°−1° (1974)
- Heating degree days
- 179
- Cooling degree days
- 46
Columbia in November
Highs average 58°14° and lows 43°6°, with 3 in76 mm of precipitation in a typical November.
- Record high
- 87°31° (1950)
- Record low
- 16°−9° (1958)
- Heating degree days
- 448
- Cooling degree days
- 1
Columbia in December
Highs average 48°9° and lows 35°1°, with 3.7 in93 mm of precipitation in a typical December.
- Record high
- 85°29° (1998)
- Record low
- 6°−14° (1983)
- Heating degree days
- 735
- Cooling degree days
- 0