Climate and monthly weather forecast
Naples, IL

Weather in January

January, like December, in Naples, Illinois, is another cold winter month, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 33.8°F (1°C). With an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Naples, is another cold month, with an average temperature varying between 25.2°F (-3.8°C) and 38.8°F (3.8°C). In February, the average high-temperature is relatively the same as in January - a still cold 38.8°F (3.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Naples, Illinois, with an average temperature fluctuating between 51.8°F (11°C) and 36.1°F (2.3°C). In Naples, the average high-temperature in March rises from a cold 38.8°F (3.8°C) in February to a cool 51.8°F (11°C). Weather in March »

Weather in April

April in Naples, Illinois, is an enjoyable spring month, with an average temperature ranging between max 63.5°F (17.5°C) and min 46°F (7.8°C). In April, the average high-temperature increases from a cool 51.8°F (11°C) in March to an enjoyable 63.5°F (17.5°C). Weather in April »

Weather in May

May, the last month of the spring in Naples, is an agreeable month, with an average temperature ranging between min 55.9°F (13.3°C) and max 73°F (22.8°C). In May, the average high-temperature rises from an enjoyable 63.5°F (17.5°C) in April to an agreeable 73°F (22.8°C). Weather in May »

Weather in June

June, the first month of the summer in Naples, is a warm month, with an average temperature ranging between max 81.9°F (27.7°C) and min 64.4°F (18°C). In Naples, Illinois, the average high-temperature in June slightly increases from a pleasant 73°F (22.8°C) in May to a moderately hot 81.9°F (27.7°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Naples, Illinois, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 84°F (28.9°C). July is the warmest month, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 66.7°F (19.3°C). In July, the average heat index is computed to be a sweltering 95°F (35°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Naples, Illinois, with an average temperature ranging between max 83.5°F (28.6°C) and min 64.9°F (18.3°C). In August, the average high-temperature is essentially the same as in July - a still moderately hot 83.5°F (28.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Naples, Illinois, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 58.8°F (14.9°C). In September, the average high-temperature slightly decreases from a warm 83.5°F (28.6°C) in August to a still moderately hot 78.1°F (25.6°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Naples, Illinois, with an average temperature varying between 47.3°F (8.5°C) and 64.2°F (17.9°C). In Naples, the average high-temperature in October drops from a warm 78.1°F (25.6°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Naples, Illinois, with an average temperature varying between 36.3°F (2.4°C) and 51.1°F (10.6°C). In Naples, Illinois, the average high-temperature in November decreases from an enjoyable 64.2°F (17.9°C) in October to a fresh 51.1°F (10.6°C). Weather in November »

Weather in December

December, the first month of the winter in Naples, is still a cold month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 27.9°F (-2.3°C). In December, the average high-temperature decreases from a cool 51.1°F (10.6°C) in November to a cold 39.2°F (4°C). Weather in December »
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FAQ

What is the coldest month in Naples?

January is the coldest month in Naples, Illinois, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C).

What is the driest month in Naples?

The months with the least rainfall are January, February and December Rain falls for 7.5 days and accumulates 1.73" (44mm) of rain.

How many days does it rain in Naples?

In Naples, Illinois, during the entire year, the rain falls for 155.4 days and collects up to 31.69" (805mm) of precipitation.

When does it snow in Naples?

January through April, October through December are months with snowfall in Naples.

What is the snowiest month in Naples?

The month with the most snowfall is January, when snow falls for 9.8 days and typically aggregates up to 3.46" (88mm) of snow.

How much does it snow in Naples?

Throughout the year, in Naples, Illinois, there are 30.2 snowfall days, and 10.75" (273mm) of snow is accumulated.

What is the month with the least sunshine in Naples?

January has the least sunshine of the year in Naples, Illinois, with an average of 4.3h of sunshine.

What are the months with the lowest UV index in Naples?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Naples, Illinois.

When is Daylight Saving Time (DST) in Naples?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Naples, Illinois, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the wettest month in Naples?

The month with the most rainfall in Naples, Illinois, is May, when the rain falls for 18.8 days and typically aggregates up to 4.02" (102mm) of precipitation.

When it does not snow in Naples?

May through September are months without snowfall in Naples.

When are the longest days in Naples?

June has the longest days of the year, with an average of 14h and 56min of daylight.

What month has the most sunshine in Naples?

With an average of 10.3h of sunshine, June has the most sunshine of the year.

When is the highest UV index in Naples?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Naples, Illinois.

What is the warmest month in Naples?

July is the warmest month, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 66.7°F (19.3°C).

What is the most humid month in Naples?

With an average relative humidity of 82%, July is the most humid month in Naples, Illinois.

What is the least humid month in Naples?

The least humid month is October, with an average relative humidity of 71%.

What is the month with the shortest days in Naples?

December has the shortest days of the year in Naples, Illinois, with an average of 9h and 25min of daylight.

Average pressure
Naples, IL

Average pressure - Naples, IL

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Naples, IL

Average wind speed - Naples, IL

The windiest months (with the highest average wind speed) are January and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average rainfall
Naples, IL

Average rainfall - Naples, IL

The wettest month (with the highest rainfall) is May (4.02").
The driest months (with the least rainfall) are January, February and December (1.73").

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Average rainfall days
Naples, IL

Average rainfall days - Naples, IL

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (7.2 days).

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Average snowfall
Naples, IL

Average snowfall - Naples, IL

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Naples, IL

Average snowfall days - Naples, IL

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Naples, IL

Average daylight / Average sunshine - Naples, IL

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days
Naples, IL

Average sunshine days - Naples, IL

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.6 days).

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Average UV index
Naples, IL

Average UV index - Naples, IL

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

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Average visibility
Naples, IL

Average visibility - Naples, IL

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

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