Climate and monthly weather forecast
Mountain Island, NC

Weather in January

January, the same as December, in Mountain Island, North Carolina, is a frosty winter month, with an average temperature ranging between min 32.5°F (0.3°C) and max 47.8°F (8.8°C). The coldest month is January, with an average high-temperature of 47.8°F (8.8°C) and an average low-temperature of 32.5°F (0.3°C). Weather in January »

Weather in February

February, the last month of the winter in Mountain Island, is a cool month, with an average temperature varying between 53.2°F (11.8°C) and 36°F (2.2°C). In February, the average high-temperature marginally rises from a frosty 47.8°F (8.8°C) in January to a cool 53.2°F (11.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a moderate month in Mountain Island, North Carolina, with an average temperature ranging between max 60.1°F (15.6°C) and min 41.5°F (5.3°C). In Mountain Island, the average high-temperature in March slightly increases from a cool 53.2°F (11.8°C) in February to a moderate 60.1°F (15.6°C). Weather in March »

Weather in April

April in Mountain Island, North Carolina, is a pleasant spring month, with an average temperature fluctuating between 70.3°F (21.3°C) and 50.9°F (10.5°C). In April, the average high-temperature rises from a moderate 60.1°F (15.6°C) in March to an agreeable 70.3°F (21.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Mountain Island, North Carolina, with an average temperature fluctuating between 59°F (15°C) and 79.2°F (26.2°C). In May, the average high-temperature marginally rises from an agreeable 70.3°F (21.3°C) in April to a warm 79.2°F (26.2°C). Weather in May »

Weather in June

June, the first month of the summer in Mountain Island, is a tropical month, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 65.8°F (18.8°C). In June, the average high-temperature marginally rises from a warm 79.2°F (26.2°C) in May to a tropical 86.9°F (30.5°C). Weather in June »

Weather in July

July, like June, is a hot summer month in Mountain Island, North Carolina, with an average temperature fluctuating between 69.1°F (20.6°C) and 90.1°F (32.3°C). July is the warmest month, with an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 69.1°F (20.6°C). The average heat index in July is evaluated at a blistering 105.8°F (41°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Mountain Island, North Carolina, with temperature in the range of an average low of 67.8°F (19.9°C) and an average high of 88.3°F (31.3°C). In Mountain Island, North Carolina, the average high-temperature in August is almost the same as in July - a still tropical 88.3°F (31.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Mountain Island, is still a warm month, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 62.6°F (17°C). In Mountain Island, the average high-temperature in September slightly decreases from a hot 88.3°F (31.3°C) in August to a moderately hot 82.2°F (27.9°C). Weather in September »

Weather in October

October, the same as September, in Mountain Island, North Carolina, is an agreeable autumn month, with an average temperature ranging between min 52°F (11.1°C) and max 71.1°F (21.7°C). In October, the average high-temperature decreases from a warm 82.2°F (27.9°C) in September to an agreeable 71.1°F (21.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Mountain Island, North Carolina, with an average temperature ranging between min 41.5°F (5.3°C) and max 58.8°F (14.9°C). In Mountain Island, the average high-temperature in November drops from an agreeable 71.1°F (21.7°C) in October to a moderate 58.8°F (14.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Mountain Island, North Carolina, with an average temperature varying between 37.6°F (3.1°C) and 51.8°F (11°C). In December, the average high-temperature slightly decreases from a moderate 58.8°F (14.9°C) in November to a fresh 51.8°F (11°C). Weather in December »
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FAQ

What is the coldest month in Mountain Island?

January is the coldest month in Mountain Island, North Carolina, with an average high-temperature of 47.8°F (8.8°C) and an average low-temperature of 32.5°F (0.3°C).

How much does it rain in Mountain Island?

In Mountain Island, North Carolina, during the entire year, the rain falls for 158.9 days and collects up to 31.26" (794mm) of precipitation.

When does it snow in Mountain Island?

January through March, November and December are months with snowfall.

How many days does it snow in Mountain Island?

Throughout the year, in Mountain Island, there are 4.6 snowfall days, and 5.79" (147mm) of snow is accumulated.

When is the lowest UV index in Mountain Island?

The months with the lowest UV index in Mountain Island are January and December, with an average maximum UV index of 2.

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

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Mountain Island, North Carolina, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Mountain Island?

In Mountain Island, snow does not fall in April through October.

When is the highest UV index in Mountain Island?

The months with the highest UV index in Mountain Island are May through August, with an average maximum UV index of 6.

When are the longest days in Mountain Island?

With an average of 14h and 30min of daylight, June has the longest days of the year in Mountain Island.

What is the warmest month in Mountain Island?

With an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 69.1°F (20.6°C), July is the warmest month.

What is the least humid month in Mountain Island?

July is the least humid month, with an average relative humidity of 70%.

What month has the most sunshine in Mountain Island?

July has the most sunshine of the year, with an average of 10.8h of sunshine.

What is the wettest month in Mountain Island?

The month with the most rainfall is August, when the rain falls for 17.8 days and typically aggregates up to 3.43" (87mm) of precipitation.

What is the driest month in Mountain Island?

October is the month with the least rainfall. Rain falls for 9.7 days and accumulates 1.93" (49mm) of precipitation.

What is the most humid month in Mountain Island?

December is the most humid month, with an average relative humidity of 76%.

When does it snow the most in Mountain Island?

December is the month with the most snowfall. Snow falls for 0.6 days and accumulates 2.01" (51mm) of snow.

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

The month with the shortest days is December, with an average of 9h and 49min of daylight.

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

December has the least sunshine of the year in Mountain Island, North Carolina, with an average of 5.3h of sunshine.

Average temperature
Mountain Island, NC

Average temperature - Mountain Island, NC

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (47.8°F).

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure
Mountain Island, NC

Average pressure - Mountain Island, NC

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed
Mountain Island, NC

Average wind speed - Mountain Island, NC

The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity
Mountain Island, NC

Average humidity - Mountain Island, NC

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).

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Average rainfall
Mountain Island, NC

Average rainfall - Mountain Island, NC

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is October (1.93").

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Average rainfall days
Mountain Island, NC

Average rainfall days - Mountain Island, NC

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall
Mountain Island, NC

Average snowfall - Mountain Island, NC

The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Mountain Island, NC

Average snowfall days - Mountain Island, NC

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Mountain Island, NC

Average daylight / Average sunshine - Mountain Island, NC

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days
Mountain Island, NC

Average sunshine days - Mountain Island, NC

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (10.6 days).

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Average UV index
Mountain Island, NC

Average UV index - Mountain Island, NC

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average visibility
Mountain Island, NC

Average visibility - Mountain Island, NC

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).

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