Climate and monthly weather forecastGrand Island, FL
Climate and monthly weather forecast
Weather in January
January, like December, in Grand Island, Florida, is another comfortable winter month, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 67.5°F (19.7°C). Grand Island's January weather, marked by an average high temperature of 67.5°F (19.7°C) and an average low temperature of 49.5°F (9.7°C), is the coldest in the year. Weather in January »Weather in February
February, the last month of the winter in Grand Island, is an agreeable month, with an average temperature ranging between min 53.4°F (11.9°C) and max 71.6°F (22°C). February's average high-temperature is an agreeable 71.6°F (22°C), maintaining a close comparison with January's 67.5°F (19.7°C). Weather in February »Weather in March
March, the first month of the spring in Grand Island, is a warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 56.5°F (13.6°C). Transitioning into March, Grand Island experiences an average high-temperature of a moderately hot 75.7°F (24.3°C), marking a minor shift from the preceding month. Weather in March »Weather in April
April, the same as March, is another warm spring month in Grand Island, Florida, with an average temperature ranging between max 82.2°F (27.9°C) and min 63.1°F (17.3°C). April witnesses a minor rise in the average high-temperature, transitioning from a warm 75.7°F (24.3°C) in March to a still moderately hot 82.2°F (27.9°C). Weather in April »Weather in May
May, the last month of the spring in Grand Island, is a tropical month, with an average temperature varying between 86.2°F (30.1°C) and 68°F (20°C). May's advent denotes a minor fluctuation in the average high-temperature to a hot 86.2°F (30.1°C) from April's 82.2°F (27.9°C). Weather in May »Weather in June
The first month of the summer, June, is still a hot month in Grand Island, Florida, with an average temperature ranging between min 73.6°F (23.1°C) and max 89.2°F (31.8°C). The average high-temperature during June is a still hot 89.2°F (31.8°C), almost matching the conditions of the preceding month. Weather in June »Weather in July
July, the same as June, in Grand Island, Florida, is another tropical summer month, with an average temperature ranging between max 90.7°F (32.6°C) and min 74.8°F (23.8°C). Grand Island signifies an average high-temperature of a still hot 90.7°F (32.6°C) in July, closely mirroring the 89.2°F (31.8°C) of June. Weather in July »Weather in August
August, the last month of the summer in Grand Island, is another tropical month, with an average temperature ranging between max 90.9°F (32.7°C) and min 75.7°F (24.3°C). August stands out as Grand Island's warmest month, with temperatures ranging between an average high of 90.9°F (32.7°C) and a low of 75.7°F (24.3°C). August's average heat index is computed to be a life-threatening hot 114.8°F (46°C). Weather in August »Weather in September
The first month of the autumn, September, is still a hot month in Grand Island, Florida, with an average temperature fluctuating between 88.5°F (31.4°C) and 73.2°F (22.9°C). Grand Island's September average high-temperature settles at a still hot 88.5°F (31.4°C), showing a near match with the preceding month. Weather in September »Weather in October
October, the same as September, is another warm autumn month in Grand Island, Florida, with an average temperature fluctuating between 67.1°F (19.5°C) and 82.9°F (28.3°C). Grand Island's weather in October involves a mild decrease in the average high-temperature, moving down slightly from September's tropical 88.5°F (31.4°C) to a warm 82.9°F (28.3°C). Weather in October »Weather in November
The last month of the autumn, November, is also a moderately hot month in Grand Island, Florida, with an average temperature fluctuating between 75.4°F (24.1°C) and 58.5°F (14.7°C). The arrival of November signals a subtle shift in temperature, down from a warm 82.9°F (28.3°C) in October to a still moderately hot 75.4°F (24.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a pleasant month in Grand Island, Florida, with an average temperature ranging between max 71.4°F (21.9°C) and min 54.5°F (12.5°C). With the advent of December, Grand Island's high-temperatures adjust to a pleasant 71.4°F (21.9°C), closely aligning with the preceding month. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Grand Island, FL
The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (67.5°F).
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (49.5°F).
Average pressure
Grand Island, FL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed
Grand Island, FL
- Average wind speed in January:
6.1mph - Average wind speed in February:
6.1mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.4mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.8mph - Average wind speed in October:
5.8mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity
Grand Island, FL
The months with the highest relative humidity are July, August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall
Grand Island, FL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.54" - Average rainfall in March:
1.26" - Average rainfall in April:
1.97" - Average rainfall in May:
3.23" - Average rainfall in June:
5.35"
- Average rainfall in July:
5.91" - Average rainfall in August:
5.51" - Average rainfall in September:
4.02" - Average rainfall in October:
2.05" - Average rainfall in November:
1.26" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is July (5.91").
The driest months (with the least rainfall) are March and November (1.26").
Average rainfall days
Grand Island, FL
- Average rainfall days in January:
9.2 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
23.2 days
- Average rainfall days in July:
26.9 days - Average rainfall days in August:
26.7 days - Average rainfall days in September:
22.3 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is July (26.9 days).
The month with the least rainy days is January (9.2 days).
Average daylight / Average sunshine
Grand Island, FL
- Average daylight in January:
10h and 30min - Average daylight in February:
11h and 12min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 36min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 48min - Average daylight in August:
13h and 6min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 30min - 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:
6h and 24min - Average sunshine in February:
7h and 48min - Average sunshine in March:
8h and 24min - Average sunshine in April:
9h and 18min - Average sunshine in May:
10h and 42min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 42min - Average sunshine in October:
7h and 18min - Average sunshine in November:
6h and 18min - Average sunshine in December:
6h and 6min
The months with the most sunshine are May and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days
Grand Island, FL
- Average sunshine days in January:
19 days - Average sunshine days in February:
16 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
4.7 days
- Average sunshine days in July:
2.8 days - Average sunshine days in August:
2.1 days - Average sunshine days in September:
5.7 days - Average sunshine days in October:
15 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (2.1 days).
Average UV index
Grand Island, FL
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover
Grand Island, FL
The months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility
Grand Island, FL
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).





