December weather in Grand Isle, LA
The average temperature in Grand Isle in December is °F (°F–°F). Average precipitation: 4.86 inches.
December is a winter month in Grand Isle, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 10h 8m.
Avg High
°F
Avg Low
°F
Precipitation
4.86 in
Daylight
10h 8m
December records in Grand Isle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 78.1°F (1950) | 35.1°F (1957) | 1.95 in (1996) |
| December 2 | 77.0°F (2012) | 44.1°F (1961) | 1.06 in (1955) |
| December 3 | 88.0°F (1950) | 37.9°F (1963) | 1.45 in (1950) |
| December 4 | 80.1°F (1949) | 39.9°F (1959) | 1.57 in (1990) |
| December 5 | 81.0°F (1958) | 45.0°F (1963) | 1.44 in (1955) |
| December 6 | 84.0°F (2011) | 36.0°F (1950) | 7.09 in (1953) |
| December 7 | 82.9°F (1951) | 28.0°F (1950) | 0.76 in (1987) |
| December 8 | 82.9°F (1951) | 39.0°F (1950) | 0.66 in (1948) |
| December 9 | 80.1°F (1961) | 37.9°F (1955) | 0.66 in (1953) |
| December 10 | 80.1°F (1949) | 36.0°F (1955) | 3.86 in (1947) |
| December 11 | 80.1°F (1949) | 34.0°F (1957) | 4.39 in (1953) |
| December 12 | 81.0°F (1949) | 36.0°F (1957) | 2.70 in (2002) |
| December 13 | 80.1°F (1949) | 36.0°F (1963) | 2.68 in (1963) |
| December 14 | 75.9°F (1961) | 34.0°F (1954) | 3.50 in (2003) |
| December 15 | 84.9°F (2011) | 33.1°F (1952) | 1.67 in (2005) |
| December 16 | 84.9°F (2011) | 28.0°F (1955) | 2.00 in (1965) |
| December 17 | 86.0°F (2011) | 30.9°F (1958) | 1.69 in (1992) |
| December 18 | 84.0°F (2011) | 32.0°F (1963) | 1.43 in (1951) |
| December 19 | 81.0°F (2011) | 34.0°F (1963) | 0.49 in (1955) |
| December 20 | 79.0°F (1957) | 35.1°F (1954) | 3.84 in (1999) |
| December 21 | 84.0°F (1949) | 36.0°F (1963) | 1.25 in (1950) |
| December 22 | 78.1°F (2011) | 39.0°F (1951) | 1.40 in (2013) |
| December 23 | 73.9°F (1951) | 28.9°F (1963) | 2.97 in (1956) |
| December 24 | 75.9°F (1951) | 26.1°F (1963) | 0.90 in (2002) |
| December 25 | 78.1°F (1951) | 28.0°F (1963) | 0.94 in (2006) |
| December 26 | 77.0°F (1964) | 36.0°F (1963) | 0.95 in (2004) |
| December 27 | 75.9°F (1949) | 35.1°F (1951) | 3.10 in (1996) |
| December 28 | 78.1°F (1954) | 39.9°F (1961) | 1.85 in (2013) |
| December 29 | 80.1°F (1964) | 36.0°F (1961) | 1.45 in (1996) |
| December 30 | 78.1°F (1956) | 33.1°F (1961) | 1.44 in (1952) |
| December 31 | 77.0°F (1951) | 37.0°F (1955) | 3.23 in (1966) |