January weather forecastGary, IN

January
Weather in January
The year in Gary, Indiana, kicks off with January, a month known for chilly temperatures and snowfall. Weather conditions continue to display winter characteristics from the previous month. The temperatures are typically on the lower side, with the most significant snowfall registered, 3.11" (79mm). January also delivers a high number of snowfall days, making it the quintessential winter month. The weather gradually transitions towards the end of the month, introducing the early harbingers of spring.Temperature
Gary witnesses the coldest weather in January, with temperatures averaging a high of 30°F (-1.1°C) and a low of 19.8°F (-6.8°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 82%.Rainfall
In Gary, in January, during 6.3 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Gary, during the entire year, the rain falls for 153.8 days and collects up to 25.51" (648mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 13.4 days and typically aggregates up to 3.11" (79mm) of snow.Daylight
In January, the average length of the day is 9h and 34min.On the first day of January, sunrise is at 7:16 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:03 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.6h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Gary, IN
- Average high temperature in January: 30°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Gary, IN
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Gary, IN
- Average wind speed in January: 11.4mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in January
Gary, IN
- Average humidity in January: 82%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Gary, IN
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in January
Gary, IN
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in January
Gary, IN
- Average snowfall in January: 3.11"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Gary, IN
- Average snowfall days in January: 13.4 days
The month with the highest number of snowfall days is January (13.4 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
Gary, IN
- 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 12min).
- Average sunshine in January: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Gary, IN
- Average sunshine days in January: 13.3 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in January
Gary, IN
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Gary, IN
- Average cloud cover in January: 63
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Gary, IN
- 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).





