January weather forecastPontiac, IL
January
Weather in January
January, like December, is another subzero cold winter month in Pontiac, Illinois, with an average temperature fluctuating between 30.2°F (-1°C) and 18.5°F (-7.5°C).Temperature
January, having an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 18.5°F (-7.5°C), is the coldest month.Humidity
The average relative humidity in January is 82%.Rainfall
January and February are months with the least rain in Pontiac when the rain falls for 4.3 days and typically aggregates up to 0.71" (18mm) of rain.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 10.2 days and accumulates 1.73" (44mm) of snow.Daylight
The average length of the day in January is 9h and 38min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:37 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:09 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.8h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be vigilant! The reflective nature of snow can increase 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
Pontiac, IL
- Average high temperature in January: 30.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in January
Pontiac, IL
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Pontiac, IL
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Pontiac, IL
- Average humidity in January: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Pontiac, IL
- Average rainfall in January: 0.71"
The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in January
Pontiac, IL
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in January
Pontiac, IL
- Average snowfall in January: 1.73"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Pontiac, IL
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is January (10.2 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
Pontiac, IL
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 3h and 48min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Pontiac, IL
- Average sunshine days in January: 18.5 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in January
Pontiac, IL
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Pontiac, IL
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Pontiac, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
