January weather forecast
Roberts, IL

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Weather in January

January, the same as December, in Roberts, Illinois, is another subzero cold winter month, with an average temperature ranging between min 19.8°F (-6.8°C) and max 31.5°F (-0.3°C).

Temperature

January, with its average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), holds the record as the coldest month.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Roberts, Illinois, in January, it is raining for 5.8 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 139.8 rainfall days, and 22.05" (560mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Roberts. January is the month with the most snowfall in Roberts. Snow falls for 10.4 days and accumulates 2.83" (72mm) of snow.

Daylight

In January, the average length of the day in Roberts is 9h and 40min.
On the first day of January, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:08 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.8h of sunshine.

UV index

The months with the lowest UV index in Roberts are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What part of the year is the coldest in Roberts?

In Roberts, January is the month with the lowest recorded average temperatures, measuring a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).

How cold is it in Roberts in January?

January temperatures in Roberts, Illinois, vary between a high-temperature of 31.5°F (-0.3°C) and a low-temperature of 19.8°F (-6.8°C).

What is the average humidity in January in Roberts?

In Roberts, Illinois, the average relative humidity in January is 81%.

How many days does it rain in January in Roberts?

In Roberts, Illinois, in January, during 5.8 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

What is the snowiest month in Roberts?

The month with the most snowfall is January, when snow falls for 10.4 days and typically aggregates up to 2.83" (72mm) of snow.

How many days does it snow in January in Roberts?

In Roberts, in January, during 10.4 snowfall days, 2.83" (72mm) of snow is typically accumulated.

How many hours of daylight does Roberts have in January?

In January, the average day length in Roberts, Illinois, is 9h and 40min.

What time are sunrise and sunset in January in Roberts?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of the month, in Roberts, Illinois, sunrise is at 7:03 am and sunset at 5:08 pm CST.

What is the month with the least sunshine in Roberts?

With an average of 3.8h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Roberts have in January?

In January, the average sunshine duration in Roberts, Illinois, is 3.8h.

What are the months with the lowest UV index in Roberts?

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

How high is the UV index in January in Roberts?

In Roberts, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
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
Roberts, IL

Average temperature in January - Roberts, IL
  • Average high temperature in January: 31.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in January: 19.8°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 (19.8°F).

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Average pressure in January
Roberts, IL

Average pressure in January - Roberts, IL
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Roberts, IL

Average wind speed in January - Roberts, IL
  • Average wind speed in January: 10.8mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in January
Roberts, IL

Average humidity in January - Roberts, IL
  • Average humidity in January: 81%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Roberts, IL

Average rainfall in January - Roberts, IL
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is May (2.91").
The driest months (with the least rainfall) are February and December (1.14").

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Average rainfall days in January
Roberts, IL

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

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in January
Roberts, IL

Average snowfall in January - Roberts, IL
  • Average snowfall in January: 2.83"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Roberts, IL

Average snowfall days in January - Roberts, IL
  • Average snowfall days in January: 10.4 days

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in January
Roberts, IL

Average sunshine days in January - Roberts, IL
  • Average sunshine days in January: 16.3 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (10.6 days).

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Average UV index in January
Roberts, IL

Average UV index in January - Roberts, IL
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Roberts, IL

Average cloud cover in January - Roberts, IL
  • Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).

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Average visibility in January
Roberts, IL

Average visibility in January - Roberts, 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).

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Roberts, Illinois, USA

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