January weather forecast
Vermilion, IL

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Weather in January

January, the same as December, is an icy winter month in Vermilion, Illinois, with an average temperature fluctuating between 33.8°F (1°C) and 21.7°F (-5.7°C).

Temperature

In Vermilion, January is the coldest month, with temperatures averaging a high of 33.8°F (1°C) and a low of 21.7°F (-5.7°C).

Humidity

The average relative humidity in January is 80%.

Rainfall

In Vermilion, in January, during 6.9 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, in Vermilion, there are 133.4 rainfall days, and 19.49" (495mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Vermilion, Illinois, are January through April, November and December. In Vermilion, in January, during 6.9 snowfall days, 1.18" (30mm) of snow is typically accumulated. Throughout the year, in Vermilion, there are 23.7 snowfall days, and 5.2" (132mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 45min.
On the first day of January in Vermilion, sunrise is at 7:10 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 5:08 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Vermilion. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 2 in January translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

What is the coldest month in Vermilion?

The coldest temperatures occur during January, when averages reach a peak of 33.8°F (1°C) and a low of 21.7°F (-5.7°C).

How cold is it in Vermilion in January?

The high-temperature in Vermilion during January is 33.8°F (1°C) and the low-temperature is 21.7°F (-5.7°C).

What is the average humidity in January in Vermilion?

In January, the average relative humidity in Vermilion, Illinois, is 80%.

How much does it rain in Vermilion in January?

In Vermilion, in January, it is raining for 6.9 days, with typically 1.34" (34mm) of accumulated precipitation.

How many days does it snow in January in Vermilion?

In Vermilion, Illinois, in January, snow falls for 6.9 days, with typically accumulated 1.18" (30mm) of snow.

How many hours of daylight does Vermilion have in January?

In Vermilion, the average day length in January is 9h and 45min.

What time are sunrise and sunset in January in Vermilion?

In January, on the first day of the month, sunrise is at 7:10 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 5:08 pm CST.

What is the month with the least sunshine in Vermilion?

January has the least sunshine of the year, with an average of 4h of sunshine.

How long on average sun shines in January in Vermilion?

In January, the average sunshine duration in Vermilion, Illinois, is 4h.

When is the lowest UV index in Vermilion?

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

What is the UV index reading in January in Vermilion?

In January, the average daily maximum UV index in Vermilion is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Vermilion, IL

Average temperature in January - Vermilion, IL
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 21.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in January
Vermilion, IL

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

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Average wind speed in January
Vermilion, IL

Average wind speed in January - Vermilion, IL
  • Average wind speed in January: 10.3mph

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

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Average humidity in January
Vermilion, IL

Average humidity in January - Vermilion, IL
  • Average humidity in January: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Vermilion, IL

Average rainfall in January - Vermilion, IL
  • Average rainfall in January: 1.34"

The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is February (0.94").

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Average rainfall days in January
Vermilion, IL

Average rainfall days in January - Vermilion, IL
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in January
Vermilion, IL

Average snowfall in January - Vermilion, IL
  • Average snowfall in January: 1.18"

The month with the highest snowfall is December (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Vermilion, IL

Average snowfall days in January - Vermilion, IL
  • Average snowfall days in January: 6.9 days

The month with the highest number of snowfall days is January (6.9 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
Vermilion, IL

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

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 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in January
Vermilion, IL

Average sunshine days in January - Vermilion, IL
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in January
Vermilion, IL

Average UV index in January - Vermilion, 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
Vermilion, IL

Average cloud cover in January - Vermilion, IL
  • Average cloud cover in January: 56

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June, August and September (Cloud cover 31).

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Average visibility in January
Vermilion, IL

Average visibility in January - Vermilion, 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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Vermilion, Illinois, USA

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