January weather forecast
Lockport, IL

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Weather in January

January, like December, is another subzero cold winter month in Lockport, Illinois, with an average temperature fluctuating between 29.1°F (-1.6°C) and 17.6°F (-8°C).

Temperature

With its high average temperature of 29.1°F (-1.6°C) and a low of 17.6°F (-8°C), January is regarded as the coldest month.

Humidity

January and February, with an average relative humidity of 83%, are the most humid months.

Rainfall

In Lockport, during January, the rain falls for 4 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Lockport, during the entire year, the rain falls for 103.8 days and collects up to 10.08" (256mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 9 days and typically aggregates up to 1.14" (29mm) of snow.

Daylight

The average length of the day in January is 9h and 34min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:06 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.7h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 1 during January leads to these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Enhance your sun protection with tightly woven, yet airy clothing. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.

Frequently asked questions

What is the coldest month?

In Lockport, January is the coldest month, with temperatures averaging a high of 29.1°F (-1.6°C) and a low of 17.6°F (-8°C).

How cold is January?

January temperatures vary between a high-temperature of 29.1°F (-1.6°C) and a low-temperature of 17.6°F (-8°C).

What are the most humid months?

The months with the highest humidity are January and February, with an average relative humidity of 83%.

What is the average humidity in January?

The average relative humidity in January is 83%.

How many days does it rain in January?

In January, the rain falls for 4 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 9 days and accumulates 1.14" (29mm) of snow.

How much does it snow in January?

In Lockport, in January, during 9 snowfall days, 1.14" (29mm) of snow is typically accumulated.

What is the average length of the day in January?

In January, the average day length is 9h and 34min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:06 pm CST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.7h of sunshine.

How many hours of sunshine does Lockport have in January?

In January, the average sunshine duration is 3.7h.

What are the months with the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in January?

In Lockport, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Lockport, IL

Average temperature in January - Lockport, IL
  • Average high temperature in January: 29.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in January: 17.6°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

Average pressure in January
Lockport, IL

Average pressure in January - Lockport, IL
  • 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 (29.92"Hg).

Average wind speed in January
Lockport, IL

Average wind speed in January - Lockport, IL
  • Average wind speed in January: 9.7mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in January
Lockport, IL

Average humidity in January - Lockport, IL
  • Average humidity in January: 83%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in January
Lockport, IL

Average rainfall in January - Lockport, IL
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is February (0.47").

Average rainfall days in January
Lockport, IL

Average rainfall days in January - Lockport, IL
  • Average rainfall days in January: 4 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in January
Lockport, IL

Average snowfall in January - Lockport, IL
  • Average snowfall in January: 1.14"

The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Lockport, IL

Average snowfall days in January - Lockport, IL
  • Average snowfall days in January: 9 days

The month with the highest number of snowfall days is January (9 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
Lockport, IL

Average daylight in January / Average sunshine in January - Lockport, IL
  • Average daylight in January: 9h and 4min

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 4min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Lockport, IL

Average sunshine days in January - Lockport, IL
  • Average sunshine days in January: 21.1 days

The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is July (13.8 days).

Average UV index in January
Lockport, IL

Average UV index in January - Lockport, IL
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Lockport, IL

Average cloud cover in January - Lockport, IL
  • Average cloud cover in January: 61

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in January
Lockport, IL

Average visibility in January - Lockport, 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).

Lockport, Illinois, USA

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