Climate and monthly weather forecastNaples, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Naples, Illinois, with an average temperature fluctuating between 33.8°F (1°C) and 21.6°F (-5.8°C). January, on average, is the coldest month, registering a high temperature of 33.8°F (1°C) and a low of 21.6°F (-5.8°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Naples, Illinois, with an average temperature varying between 25.2°F (-3.8°C) and 38.8°F (3.8°C). Naples's shift from January to February is accompanied by an average high-temperature of a still cold 38.8°F (3.8°C), a slight deviation from 33.8°F (1°C). Weather in February »Weather in March
March, the first month of the spring in Naples, is a cool month, with an average temperature varying between 51.8°F (11°C) and 36.1°F (2.3°C). March brings a rise in Naples's average high-temperature, moving from a wintry 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 a comfortable spring month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 63.5°F (17.5°C). With the onset of April, Naples experiences a temperature shift, with the average high-temperature moving from a cool 51.8°F (11°C) in March to a comfortable 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 fluctuating between 73°F (22.8°C) and 55.9°F (13.3°C). Naples's weather in May shows a rise in the average high-temperature, moving up from April's enjoyable 63.5°F (17.5°C) to a pleasant 73°F (22.8°C). Weather in May »Weather in June
June, the first month of the summer in Naples, is a moderately hot month, with an average temperature fluctuating between 81.9°F (27.7°C) and 64.4°F (18°C). As Naples welcomes June, the average high-temperature sees a modest rise, transitioning 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 an average temperature varying between 66.7°F (19.3°C) and 84°F (28.9°C). In Naples, the highest average temperatures are observed in July, with a high of 84°F (28.9°C) and a low of 66.7°F (19.3°C). The heat index value for July is appraised at a fiery hot 95°F (35°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Naples, Illinois, with an average temperature fluctuating between 64.9°F (18.3°C) and 83.5°F (28.6°C). In August, Naples notes an average high-temperature of a still moderately hot 83.5°F (28.6°C), hardly different from the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Naples, Illinois, with an average temperature varying between 78.1°F (25.6°C) and 58.8°F (14.9°C). Naples's weather subtly changes with the onset of September, barely falling from 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, like September, in Naples, Illinois, is another enjoyable autumn month, with an average temperature varying between 64.2°F (17.9°C) and 47.3°F (8.5°C). Naples in October experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 78.1°F (25.6°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »Weather in November
November, the last month of the autumn in Naples, is also a fresh month, with an average temperature varying between 51.1°F (10.6°C) and 36.3°F (2.4°C). The shift from October to November involves a decrease in the average high-temperature, from a refreshing 64.2°F (17.9°C) to a fresh 51.1°F (10.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Naples, Illinois, with an average temperature varying between 27.9°F (-2.3°C) and 39.2°F (4°C). As November transitions to December, the average high-temperature falls from a fresh 51.1°F (10.6°C) to a wintry 39.2°F (4°C). Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
During the coldest month in Naples, January, temperatures average a high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C).
The months with the least rainfall in Naples are January, February and December Rain falls for 7.5 days and accumulates 1.73" (44mm) of rain.
In Naples, during the entire year, the rain falls for 155.4 days and collects up to 31.69" (805mm) of precipitation.
January through April, October through December are months with snowfall in Naples.
January is the month with the most snowfall. Snow falls for 9.8 days and accumulates 3.46" (88mm) of snow.
Throughout the year, in Naples, Illinois, there are 30.2 snowfall days, and 10.75" (273mm) of snow is accumulated.
January has the least sunshine of the year in Naples, Illinois, with an average of 4.3h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Naples, Illinois.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
May is the month with the most rainfall in Naples, Illinois. Rain falls for 18.8 days and accumulates 4.02" (102mm) of precipitation.
In Naples, snow does not fall in May through September.
With an average of 14h and 54min of daylight, June has the longest days of the year.
June has the most sunshine of the year in Naples, with an average of 10.3h of sunshine.
The months with the highest UV index in Naples are June through August, with an average maximum UV index of 6.
In Naples, temperatures reach their average annual highs in July, measuring 84°F (28.9°C) and a minimum average of 66.7°F (19.3°C).
July is the most humid month, with an average relative humidity of 82%.
The least humid month in Naples is October, with an average relative humidity of 71%.
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Naples, IL
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Naples, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Naples, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
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).
Average humidity
Naples, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Naples, IL
- Average rainfall in January:
1.73" - Average rainfall in February:
1.73" - Average rainfall in March:
2.44" - Average rainfall in April:
3.54" - Average rainfall in May:
4.02" - Average rainfall in June:
3.9"
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").
Average rainfall days
Naples, IL
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
14.6 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.9 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
12.1 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.1 days
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).
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").
Average snowfall days
Naples, IL
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.7 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:
0.1 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
5.9 days
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).
Average daylight / Average sunshine
Naples, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 48min
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).
Average sunshine days
Naples, IL
- Average sunshine days in January:
15.5 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
12.3 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
8.6 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.6 days).
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).
Average cloud cover
Naples, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
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).
