Climate and monthly weather forecastFish Island, LA
Climate and monthly weather forecast
Weather in January
January, like December, is another mild winter month in Fish Island, Louisiana, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 46°F (7.8°C). Temperature records mark January as the coldest month, with highs averaging 59.5°F (15.3°C) and lows at 46°F (7.8°C). Weather in January »Weather in February
February, the last month of the winter in Fish Island, is an enjoyable month, with an average temperature fluctuating between 63.7°F (17.6°C) and 50.7°F (10.4°C). The average high-temperature is an enjoyable 63.7°F (17.6°C) in February, hardly different from the 59.5°F (15.3°C) recorded in January. Weather in February »Weather in March
March, the first month of the spring in Fish Island, is an agreeable month, with an average temperature fluctuating between 55.9°F (13.3°C) and 70.9°F (21.6°C). March brings a slight increase in the average high-temperature, progressing from a comfortable 63.7°F (17.6°C) in February to an agreeable 70.9°F (21.6°C). Weather in March »Weather in April
April in Fish Island, Louisiana, is a warm spring month, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 77°F (25°C). With the onset of April, Fish Island's average high-temperature experiences a slight rise, moving from March's agreeable 70.9°F (21.6°C) to a moderately hot 77°F (25°C). Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in Fish Island, Louisiana, with an average temperature varying between 83.7°F (28.7°C) and 68.5°F (20.3°C). Fish Island perceives a slight temperature ascent during May, with average high-temperatures adjusting from a warm 77°F (25°C) in April to a still moderately hot 83.7°F (28.7°C). Weather in May »Weather in June
June, the first month of the summer in Fish Island, is a tropical month, with an average temperature ranging between min 74.7°F (23.7°C) and max 88.7°F (31.5°C). June's arrival brings an average high-temperature of a tropical 88.7°F (31.5°C), demonstrating subtle variation from the preceding month. Weather in June »Weather in July
July, the same as June, in Fish Island, Louisiana, is another tropical summer month, with an average temperature ranging between min 75.9°F (24.4°C) and max 89.2°F (31.8°C). July's climate shows a minor adjustment in average high-temperatures to a still hot 89.2°F (31.8°C) from June's 88.7°F (31.5°C). Weather in July »Weather in August
August, the last month of the summer in Fish Island, is also a hot month, with an average temperature fluctuating between 76.6°F (24.8°C) and 89.6°F (32°C). August, noted for its average high-temperature of 89.6°F (32°C) and an average low-temperature of 76.6°F (24.8°C), is considered the warmest month. August's mean heat index is computed to be a scorching 111.2°F (44°C). Weather in August »Weather in September
September, the first month of the autumn in Fish Island, is still a tropical month, with an average temperature varying between 72.1°F (22.3°C) and 86.2°F (30.1°C). Fish Island experiences an average high-temperature of a still hot 86.2°F (30.1°C) in September, marking an insignificant shift from 89.6°F (32°C) in August. Weather in September »Weather in October
October, like September, in Fish Island, Louisiana, is another warm autumn month, with an average temperature varying between 63.1°F (17.3°C) and 79.3°F (26.3°C). The commencement of October includes a gentle temperature shift, with the average high-temperature dropping a bit from a hot 86.2°F (30.1°C) in September to a warm 79.3°F (26.3°C). Weather in October »Weather in November
November, the last month of the autumn in Fish Island, is another pleasant month, with an average temperature fluctuating between 68.7°F (20.4°C) and 53.6°F (12°C). The shift from October to November involves a decrease in the average high-temperature, from a warm 79.3°F (26.3°C) to a pleasant 68.7°F (20.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Fish Island, Louisiana, with an average temperature ranging between max 62.4°F (16.9°C) and min 49.5°F (9.7°C). With the commencement of December, Fish Island records a moderate temperature decline, with the average high easing from November's agreeable 68.7°F (20.4°C) to an enjoyable 62.4°F (16.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Fish Island, LA
The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is January (59.5°F).
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure
Fish Island, LA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.96"Hg).
Average wind speed
Fish Island, LA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.4mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8.3mph
The windiest months (with the highest average wind speed) are February and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Fish Island, LA
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Fish Island, LA
- Average rainfall in January:
0.75" - Average rainfall in February:
0.67" - Average rainfall in March:
0.35" - Average rainfall in April:
0.87" - Average rainfall in May:
0.75" - Average rainfall in June:
1.14"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.93" - Average rainfall in September:
0.91" - Average rainfall in October:
0.87" - Average rainfall in November:
0.55" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is March (0.35").
Average rainfall days
Fish Island, LA
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
9 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
10.1 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
19.8 days - Average rainfall days in September:
14 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is August (19.8 days).
The month with the least rainy days is November (6.5 days).
Average snowfall
Fish Island, LA
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Fish Island, LA
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Fish Island, LA
- Average daylight in January:
10h and 30min - Average daylight in February:
11h and 6min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 42min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 54min - Average daylight in August:
13h and 12min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 42min - Average daylight in December:
10h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January:
5h and 30min - Average sunshine in February:
5h and 42min - Average sunshine in March:
7h and 48min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 30min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 36min - Average sunshine in September:
10h and 18min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
Fish Island, LA
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
20.9 days - Average sunshine days in April:
20 days - Average sunshine days in May:
18.4 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
8.7 days - Average sunshine days in August:
6.8 days - Average sunshine days in September:
11 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
22.3 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is August (6.8 days).
Average UV index
Fish Island, LA
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Fish Island, LA
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility
Fish Island, LA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





