July weather in Grand Isle, LA
The average temperature in Grand Isle in July is °F (°F–°F). Average precipitation: 7.95 inches.
July is a summer month in Grand Isle, and is cooler than the annual average of 0°F. Expect about 11 days with precipitation. Daylight averages about 13h 42m.
Avg High
°F
Avg Low
°F
Precipitation
7.95 in
Daylight
13h 42m
July records in Grand Isle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 98.1°F (1954) | 72.0°F (1961) | 1.47 in (2010) |
| July 2 | 96.1°F (1954) | 68.0°F (1963) | 2.03 in (2005) |
| July 3 | 96.1°F (2011) | 68.0°F (1961) | 1.00 in (2006) |
| July 4 | 95.0°F (1952) | 71.1°F (1963) | 2.60 in (1990) |
| July 5 | 95.0°F (1957) | 69.1°F (1950) | 4.50 in (1950) |
| July 6 | 100.0°F (1962) | 70.0°F (1954) | 6.37 in (2005) |
| July 7 | 95.0°F (1958) | 72.0°F (1950) | 3.03 in (1985) |
| July 8 | 97.0°F (1963) | 70.0°F (1951) | 2.29 in (1948) |
| July 9 | 98.1°F (1963) | 69.1°F (1961) | 2.81 in (1956) |
| July 10 | 96.1°F (1962) | 71.1°F (1950) | 1.35 in (1948) |
| July 11 | 97.0°F (1962) | 68.0°F (1950) | 4.00 in (1995) |
| July 12 | 97.0°F (1962) | 68.0°F (1950) | 1.31 in (1950) |
| July 13 | 97.0°F (1962) | 69.1°F (1950) | 3.20 in (1955) |
| July 14 | 93.9°F (2013) | 69.1°F (1961) | 4.40 in (1993) |
| July 15 | 97.0°F (1955) | 68.0°F (1961) | 3.13 in (1952) |
| July 16 | 97.0°F (1951) | 70.0°F (1966) | 5.40 in (1985) |
| July 17 | 98.1°F (1958) | 69.1°F (1961) | 2.50 in (1992) |
| July 18 | 97.0°F (1960) | 70.0°F (1965) | 4.00 in (1997) |
| July 19 | 95.0°F (1951) | 72.0°F (1956) | 2.05 in (2014) |
| July 20 | 97.0°F (1951) | 72.0°F (1958) | 2.10 in (2015) |
| July 21 | 93.9°F (1954) | 71.1°F (1958) | 1.75 in (1958) |
| July 22 | 95.0°F (1960) | 71.1°F (1957) | 0.99 in (2015) |
| July 23 | 95.0°F (1960) | 69.1°F (1957) | 2.75 in (1964) |
| July 24 | 95.0°F (1960) | 71.1°F (1963) | 4.31 in (2003) |
| July 25 | 95.0°F (1952) | 72.0°F (1951) | 2.20 in (1996) |
| July 26 | 95.0°F (1956) | 64.0°F (1967) | 1.43 in (2006) |
| July 27 | 96.1°F (1956) | 72.0°F (1961) | 1.80 in (1964) |
| July 28 | 98.1°F (1962) | 64.0°F (2011) | 6.00 in (1954) |
| July 29 | 96.1°F (1957) | 71.1°F (1963) | 2.33 in (1987) |
| July 30 | 95.0°F (1960) | 69.1°F (1956) | 3.50 in (1951) |
| July 31 | 97.0°F (1960) | 66.0°F (2011) | 3.05 in (1962) |