Glen St. Mary, Sunday, 9 August, 18:40
Heavy rain. Feels like 79°. High 91°, low 75°.
In December, Glen St. Mary, FL averages a high of 66.3° and a low of 48.8°. About 2.5 inches of precipitation fall over the month (7 wet days). The record high is 82.8° (1991) and the record low 17.6° (1989). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 68.5° | 50.5° | 17% | 81.3° (1991) | 30.2° (1979) |
| 2 | 68.4° | 50.4° | 17% | 82.8° (1991) | 30.2° (2020) |
| 3 | 68.2° | 49.5° | 12% | 81.1° (1991) | 33.6° (1988) |
| 4 | 68° | 49.6° | 10% | 80.8° (1978) | 30.9° (1989) |
| 5 | 68.4° | 50.2° | 23% | 81.1° (1982) | 34.7° (2000) |
| 6 | 67.8° | 49.5° | 32% | 80.8° (2013) | 34° (2018) |
| 7 | 67.1° | 49.6° | 15% | 80.6° (2022) | 31.1° (1984) |
| 8 | 67.6° | 49.6° | 22% | 81.3° (1978) | 29.1° (2010) |
| 9 | 68.5° | 51.1° | 23% | 81.3° (2013) | 31.1° (2010) |
| 10 | 68° | 51.3° | 28% | 81.3° (2019) | 32.4° (1968) |
| 11 | 65.8° | 49.5° | 25% | 81.5° (1961) | 29.8° (1995) |
| 12 | 66° | 48.4° | 28% | 82.2° (1961) | 26.1° (1962) |
| 13 | 66.7° | 49.8° | 13% | 80.6° (2007) | 18.7° (1962) |
| 14 | 67.8° | 51.1° | 28% | 80.1° (2001) | 24.3° (1962) |
| 15 | 66.4° | 50.5° | 25% | 79.7° (2007) | 27° (2010) |
| 16 | 66.6° | 48.7° | 22% | 79.5° (2015) | 27.7° (1968) |
| 17 | 65.1° | 48° | 22% | 79.5° (2015) | 27.7° (1968) |
| 18 | 64.8° | 46.2° | 22% | 81.3° (2016) | 30° (1960) |
| 19 | 64.8° | 46° | 12% | 80.4° (1967) | 27.5° (1981) |
| 20 | 64.6° | 47.3° | 22% | 80.2° (1990) | 25.9° (2000) |
| 21 | 65.1° | 46.9° | 30% | 80.8° (2013) | 25.9° (2000) |
| 22 | 64.9° | 47.1° | 22% | 80.2° (2013) | 26.8° (1976) |
| 23 | 66.2° | 48° | 23% | 79.3° (2013) | 23° (1989) |
| 24 | 66° | 48.6° | 30% | 81.9° (2015) | 17.6° (1989) |
| 25 | 63.7° | 46.9° | 22% | 81.9° (2015) | 18.5° (1989) |
| 26 | 61.9° | 45.1° | 20% | 81.1° (2015) | 18.5° (1983) |
| 27 | 64° | 45.3° | 17% | 82° (2015) | 26.6° (1983) |
| 28 | 66° | 48° | 18% | 79.9° (2015) | 26.6° (2010) |
| 29 | 66.6° | 49.3° | 30% | 79.9° (2015) | 28.6° (2010) |
| 30 | 65.3° | 48.7° | 15% | 82.4° (2015) | 25.7° (1961) |
| 31 | 67.5° | 50.7° | 28% | 81° (2015) | 25.5° (2000) |