Climate and monthly weather forecast
Grand Island, FL

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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 »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Grand Island?

January, on average, is the coldest month in Grand Island, registering a high temperature of 67.5°F (19.7°C) and a low of 49.5°F (9.7°C).

How many days does it rain in Grand Island?

In Grand Island, during the entire year, the rain falls for 193.1 days and collects up to 35.71" (907mm) of precipitation.

When is the lowest UV index in Grand Island?

January is the month with the lowest UV index in Grand Island, Florida, with an average maximum UV index of 4.

What is the least humid month in Grand Island?

March is the least humid month, with an average relative humidity of 71%.

What is the driest month in Grand Island?

March and November are months with the least rain in Grand Island when the rain falls for 11.3 days and typically aggregates up to 1.26" (32mm) of rain.

When is Daylight Saving Time (DST) in Grand Island?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the month with the most sunshine in Grand Island?

The months with the most sunshine in Grand Island, Florida, are May and July, with an average of 10.7h of sunshine.

When is the highest UV index in Grand Island?

The months with the highest UV index in Grand Island are May through August, with an average maximum UV index of 7.

When are the longest days in Grand Island?

The month with the longest days in Grand Island is June, with an average of 14h and 0min of daylight.

What is the most humid month in Grand Island?

The months with the highest humidity in Grand Island, Florida, are July through September, with an average relative humidity of 78%.

What is the rainiest month in Grand Island?

The month with the most rainfall in Grand Island, Florida, is July, when the rain falls for 26.9 days and typically aggregates up to 5.91" (150mm) of precipitation.

What month is the hottest in Grand Island?

August, noted for its average high-temperature of 90.9°F (32.7°C) and an average low-temperature of 75.7°F (24.3°C), is considered the warmest month in Grand Island.

What is the month with the shortest days in Grand Island?

December has the shortest days of the year in Grand Island, with an average of 10h and 18min of daylight.

What is the month with the least sunshine in Grand Island?

December has the least sunshine of the year in Grand Island, Florida, with an average of 6.1h of sunshine.

Average temperature
Grand Island, FL

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 - Grand Island, FL

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 - Grand Island, FL

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

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 - Grand Island, FL

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 - Grand Island, FL

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 / Average sunshine - Grand Island, FL

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).

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 - Grand Island, FL

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

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 visibility
Grand Island, FL

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).

Grand Island, Florida, USA

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