January weather forecastNaples, IL
January
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).Temperature
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).Humidity
In January, the average relative humidity is 78%.Rainfall
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.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall in Naples. Snow falls for 9.8 days and accumulates 3.46" (88mm) of snow.Daylight
The average length of the day in January in Naples is 9h and 44min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:20 pm CST.
Sunshine
January has the least sunshine of the year in Naples, with an average of 4.3h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Naples. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Naples, IL
- Average high temperature in January: 33.8°F
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).
- Average low temperature in January: 21.6°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 in January
Naples, IL
- Average pressure in January: 30.15"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 in January
Naples, IL
- Average wind speed in January: 9.9mph
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 in January
Naples, IL
- Average humidity in January: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Naples, IL
- Average rainfall in January: 1.73"
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 in January
Naples, IL
- Average rainfall days in January: 7.5 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 in January
Naples, IL
- Average snowfall in January: 3.46"
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 in January
Naples, IL
- Average snowfall days in January: 9.8 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 in January /
Average sunshine in January
Naples, IL
- Average daylight in January: 9h and 42min
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
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 in January
Naples, IL
- Average sunshine days in January: 15.5 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 in January
Naples, IL
- Average UV index in January: 2
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 in January
Naples, IL
- Average cloud cover in January: 52
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 in January
Naples, IL
- Average visibility in January: 6mi
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).
