Weather World
Town of Grand Isle, LA
Grand Isle Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 62°F Lo 52°F | Hi 64°F Lo 56°F | Hi 69°F Lo 62°F | Hi 74°F Lo 67°F | Hi 80°F Lo 74°F | Hi 85°F Lo 80°F | Hi 86°F Lo 81°F | Hi 87°F Lo 81°F | Hi 84°F Lo 78°F | Hi 78°F Lo 71°F | Hi 70°F Lo 62°F | Hi 65°F Lo 57°F |
| 12 mph | 12 mph | 12 mph | 12 mph | 10 mph | 9 mph | 8 mph | 8 mph | 9 mph | 11 mph | 12 mph | 12 mph |
| 4.8 in | 4 in | 4.1 in | 4 in | 4.5 in | 5.9 in | 8.3 in | 9.7 in | 6.2 in | 3.6 in | 3.9 in | 4.5 in |
| 75% | 79% | 78% | 77% | 76% | 75% | 74% | 73% | 73% | 72% | 74% | 78% |
| 39% | 43% | 39% | 35% | 33% | 36% | 40% | 39% | 35% | 29% | 35% | 45% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 25 | 22 | 25 | 24 | 22 | 16 | 12 | 10 | 17 | 25 | 25 | 25 |
| 6 | 6 | 6 | 6 | 9 | 14 | 19 | 21 | 13 | 6 | 5 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 194 | 162 | 192 | 206 | 208 | 173 | 142 | 163 | 190 | 232 | 205 | 167 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 16°C Lo 11°C | Hi 18°C Lo 13°C | Hi 21°C Lo 17°C | Hi 23°C Lo 20°C | Hi 27°C Lo 23°C | Hi 30°C Lo 26°C | Hi 30°C Lo 27°C | Hi 30°C Lo 27°C | Hi 29°C Lo 26°C | Hi 26°C Lo 22°C | Hi 21°C Lo 17°C | Hi 18°C Lo 14°C |
| 20 km/h | 19 km/h | 19 km/h | 20 km/h | 17 km/h | 15 km/h | 13 km/h | 13 km/h | 15 km/h | 18 km/h | 19 km/h | 19 km/h |
| 122 mm | 101 mm | 103 mm | 102 mm | 114 mm | 151 mm | 210 mm | 246 mm | 158 mm | 92 mm | 99 mm | 113 mm |
| 75% | 79% | 78% | 77% | 76% | 75% | 74% | 73% | 73% | 72% | 74% | 78% |
| 39% | 43% | 39% | 35% | 33% | 36% | 40% | 39% | 35% | 29% | 35% | 45% |
| 1021 mb | 1019 mb | 1018 mb | 1016 mb | 1015 mb | 1015 mb | 1016 mb | 1015 mb | 1014 mb | 1016 mb | 1019 mb | 1020 mb |
| 25 | 22 | 25 | 24 | 22 | 16 | 12 | 10 | 17 | 25 | 25 | 25 |
| 6 | 6 | 6 | 6 | 9 | 14 | 19 | 21 | 13 | 6 | 5 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 194 | 162 | 192 | 206 | 208 | 173 | 142 | 163 | 190 | 232 | 205 | 167 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.