January weather forecastPlainville, IL

January

Weather in January

January, like December, in Plainville, Illinois, is an icy winter month, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 34°F (1.1°C).

Temperature

January is the coldest month, exhibiting average temperatures of 34°F (1.1°C) at the peak and 21.6°F (-5.8°C) at the base.

Humidity

In Plainville, the average relative humidity in January is 77%.

Rainfall

January is the month with the least rainfall in Plainville, Illinois. Rain falls for 5.3 days and accumulates 1.14" (29mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 6.2 days and accumulates 3.31" (84mm) of snow.

Daylight

In Plainville, the average length of the day in January is 9h and 44min.
On the first day of the month, sunrise is at 7:25 am and sunset at 4:50 pm. On the last day of January, in Plainville, sunrise is at 7:13 am and sunset at 5:22 pm CST.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 2 in January translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Plainville, the lowest temperatures are generally noted in January, averaging a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C).

The average high-temperature, in January, in Plainville, is 34°F (1.1°C), while the average low-temperature is 21.6°F (-5.8°C).

In Plainville, Illinois, the average relative humidity in January is 77%.

The month with the least rainfall in Plainville is January, when the rain falls for 5.3 days and typically collects 1.14" (29mm) of precipitation.

In Plainville, Illinois, in January, it is raining for 5.3 days, with typically 1.14" (29mm) of accumulated precipitation.

January is the month with the most snowfall in Plainville. Snow falls for 6.2 days and accumulates 3.31" (84mm) of snow.

In Plainville, during January, snow falls for 6.2 days and regularly aggregates up to 3.31" (84mm) of snow.

In Plainville, Illinois, the average day length in January is 9h and 44min.

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:22 pm CST.

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

The average sunshine duration in January is 4.5h.

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

In Plainville, Illinois, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Plainville, IL

  • Average high temperature in January: 34°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in January
Plainville, IL

  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Plainville, IL

  • Average wind speed in January: 9.9mph

The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in January
Plainville, IL

  • Average humidity in January: 77%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in January
Plainville, IL

  • Average rainfall in January: 1.14"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in January
Plainville, IL

  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in January
Plainville, IL

  • Average snowfall in January: 3.31"

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Plainville, IL

  • Average snowfall days in January: 6.2 days

The month with the highest number of snowfall days is January (6.2 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
Plainville, IL

  • Average daylight in January: 9h and 42min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 30min

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

Average sunshine days in January
Plainville, IL

  • Average sunshine days in January: 20 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in January
Plainville, IL

  • Average UV index in January: 2

The months with the highest UV index are 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
Plainville, IL

  • Average cloud cover in January: 51

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in January
Plainville, 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).