Glenmont, Sunday, 9 August, 07:45
Overcast. Feels like 75°. High 88°, low 73°.
In December, Glenmont, MD averages a high of 44.7° and a low of 31.5°. About 3.5 inches of precipitation fall over the month (9 wet days). The record high is 74.7° (1998) and the record low -4.7° (1960). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 48.6° | 35.2° | 35% | 72.1° (2006) | 17.1° (1967) |
| 2 | 48.2° | 34.2° | 25% | 63.9° (1970) | 14.2° (1967) |
| 3 | 48.4° | 34.3° | 20% | 68.4° (1998) | 17.8° (1976) |
| 4 | 47.8° | 34° | 23% | 71.6° (1982) | 16.3° (1966) |
| 5 | 46.6° | 34.2° | 32% | 70.5° (2001) | 23.9° (1966) |
| 6 | 47.1° | 33.4° | 35% | 74.7° (1998) | 14.5° (2007) |
| 7 | 45.7° | 32.4° | 22% | 73.6° (1998) | 7.9° (2002) |
| 8 | 45.5° | 32.7° | 25% | 69.1° (1978) | 16° (2005) |
| 9 | 45.3° | 32.2° | 38% | 68° (1966) | 15.6° (1989) |
| 10 | 46° | 33.4° | 33% | 67.8° (1966) | 13.6° (1989) |
| 11 | 45.3° | 32.4° | 33% | 68° (2021) | 15.6° (1995) |
| 12 | 45.1° | 32.2° | 23% | 68.4° (2015) | 10.4° (1962) |
| 13 | 44.8° | 31.8° | 28% | 69.6° (2015) | 6.4° (1960) |
| 14 | 44.1° | 31.8° | 35% | 68.4° (2015) | 8.8° (1960) |
| 15 | 45.3° | 32° | 23% | 66.2° (1971) | 14.2° (2025) |
| 16 | 44.6° | 31.5° | 42% | 65.5° (1971) | 9.7° (1989) |
| 17 | 44.6° | 31.8° | 30% | 66° (1984) | 8.6° (1989) |
| 18 | 42.8° | 30.4° | 17% | 67.6° (2006) | 3.2° (1989) |
| 19 | 42.1° | 28.9° | 27% | 59.9° (1970) | 6.8° (1989) |
| 20 | 41.9° | 28.9° | 27% | 59.7° (1987) | 5° (1960) |
| 21 | 43° | 30.2° | 23% | 66.2° (2013) | 9.1° (1981) |
| 22 | 43.3° | 30° | 32% | 70.9° (2013) | 2.7° (1989) |
| 23 | 44.8° | 30.2° | 37% | 63.5° (1990) | -4.7° (1960) |
| 24 | 44.1° | 30.2° | 38% | 68.5° (2015) | -2.4° (1960) |
| 25 | 42.3° | 28.9° | 37% | 68.9° (2015) | 0.1° (1983) |
| 26 | 40.5° | 28.4° | 25% | 62.8° (1964) | 3.2° (1983) |
| 27 | 41.5° | 28.9° | 18% | 69.3° (2015) | 6.6° (1989) |
| 28 | 44.4° | 30.4° | 27% | 66.2° (1984) | 10.8° (1966) |
| 29 | 43.9° | 31.1° | 33% | 70° (1984) | 11.7° (1961) |
| 30 | 42.8° | 30.4° | 22% | 64° (2019) | 8.2° (1961) |
| 31 | 43.9° | 30.2° | 40% | 65.5° (1992) | 2.3° (1962) |