January weather forecast
Keyesport, IL

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Weather in January

January, the same as December, is an icy winter month in Keyesport, Illinois, with an average temperature varying between 37°F (2.8°C) and 24.4°F (-4.2°C).

Temperature

Keyesport's coldest month, January, registers temperatures that range from a high of 37°F (2.8°C) to a low of 24.4°F (-4.2°C).

Humidity

The average relative humidity in January is 77%.

Rainfall

In Keyesport, Illinois, in January, it is raining for 5.8 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 120.1 rainfall days, and 15.55" (395mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Keyesport, during January, snow falls for 5.3 days and regularly aggregates up to 0.67" (17mm) of snow. Throughout the year, there are 16.4 snowfall days, and 2.24" (57mm) of snow is accumulated.

Daylight

In Keyesport, the average length of the day in January is 9h and 49min.
On the first day of January, sunrise is at 7:15 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:17 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4.5h of sunshine.

UV index

The months with the lowest UV index are January, February, November 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 average individuals.
Note: The daily high UV index of 2 in January translates into this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Keyesport notes the coldest temperatures in January, with a average high of 37°F (2.8°C) and a low of 24.4°F (-4.2°C).

How cold is January?

In January, the average high-temperature and low-temperature are 37°F (2.8°C) and 24.4°F (-4.2°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 77%.

How much does it rain in January?

In January, the rain falls for 5.8 days. Throughout January, 0.94" (24mm) of precipitation is accumulated.

How many days does it snow in January?

In Keyesport, in January, during 5.3 snowfall days, 0.67" (17mm) of snow is typically accumulated.

How many hours of daylight does Keyesport have in January?

The average day length in January is 9h and 49min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:15 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:17 pm CST.

What is the month with the least sunshine?

With an average of 4.5h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Keyesport have in January?

The average sunshine duration in January is 4.5h.

When is the lowest UV index in Keyesport?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Keyesport, IL

Average temperature in January - Keyesport, IL
  • Average high temperature in January: 37°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in January: 24.4°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in January
Keyesport, IL

Average pressure in January - Keyesport, 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 (29.93"Hg).

Average wind speed in January
Keyesport, IL

Average wind speed in January - Keyesport, IL
  • Average wind speed in January: 9.8mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in January
Keyesport, IL

Average humidity in January - Keyesport, IL
  • Average humidity in January: 77%

The months with the highest relative humidity are May, July and August (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Keyesport, IL

Average rainfall in January - Keyesport, IL
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is June (2.01").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in January
Keyesport, IL

Average rainfall days in January - Keyesport, IL
  • Average rainfall days in January: 5.8 days

The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in January
Keyesport, IL

Average snowfall in January - Keyesport, IL
  • Average snowfall in January: 0.67"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in January
Keyesport, IL

Average snowfall days in January - Keyesport, IL
  • Average snowfall days in January: 5.3 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Keyesport, IL

Average daylight in January / Average sunshine in January - Keyesport, IL
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in January
Keyesport, IL

Average sunshine days in January - Keyesport, IL
  • Average sunshine days in January: 21.3 days

The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is June (13.8 days).

Average UV index in January
Keyesport, IL

Average UV index in January - Keyesport, 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, November and December (UV index 2).

Average cloud cover in January
Keyesport, IL

Average cloud cover in January - Keyesport, IL
  • Average cloud cover in January: 51

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in January
Keyesport, IL

Average visibility in January - Keyesport, 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).

Keyesport, Illinois, USA

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