January weather forecastJonesboro, IL
January
Weather in January
January, the same as December, is an icy winter month in Jonesboro, Illinois, with an average temperature fluctuating between 26.8°F (-2.9°C) and 39.7°F (4.3°C).Temperature
January, with an average high of 39.7°F (4.3°C) and a low of 26.8°F (-2.9°C), signifies the coldest month of the year.Humidity
In January, the average relative humidity is 76%.Rainfall
In Jonesboro, Illinois, in January, it is raining for 8.4 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 143 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
Months with snowfall in Jonesboro are January through April, October through December. In Jonesboro, in January, during 4.6 snowfall days, 1.22" (31mm) of snow is typically accumulated. In Jonesboro, during the entire year, snow falls for 14.9 days and aggregates up to 6.06" (154mm) of snow.Daylight
The average length of the day in January is 9h and 56min.On the first day of January, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:19 pm CST.
Sunshine
The months with the least sunshine are January and February, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in January translates into these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Jonesboro, IL
- Average high temperature in January: 39.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in January: 26.8°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 (26.8°F).
Average pressure in January
Jonesboro, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Jonesboro, IL
- Average wind speed in January: 9mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in January
Jonesboro, IL
- Average humidity in January: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Jonesboro, IL
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in January
Jonesboro, IL
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in January
Jonesboro, IL
- Average snowfall in January: 1.22"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jonesboro, IL
- Average snowfall days in January: 4.6 days
The month with the highest number of snowfall days is January (4.6 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
Jonesboro, IL
- Average daylight in January: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in January
Jonesboro, IL
- Average sunshine days in January: 18.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in January
Jonesboro, IL
- Average UV index in January: 2
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, February and December (UV index 2).
Average cloud cover in January
Jonesboro, IL
- Average cloud cover in January: 50
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in January
Jonesboro, IL
- Average visibility in January: 6mi
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).
