January weather forecast
Granville, IL

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Weather in January

January, the same as December, in Granville, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 28.9°F (-1.7°C) and 16.9°F (-8.4°C).

Temperature

January brings the lowest temperatures, with an average high of 28.9°F (-1.7°C) and an average low of 16.9°F (-8.4°C).

Humidity

In Granville, the average relative humidity in January is 83%.

Rainfall

The months with the least rainfall are January and December Rain falls for 5.9 days and accumulates 1.61" (41mm) of rain.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall in Granville, Illinois, is January, when snow falls for 11.9 days and typically aggregates up to 4.09" (104mm) of snow.

Daylight

The average length of the day in January in Granville is 9h and 36min.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:11 pm CST.

Sunshine

With an average of 3.9h of sunshine, January has the least sunshine of the year.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 1 in January translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What part of the year is the coldest in Granville?

Granville, Illinois, notes the coldest temperatures in January, with a average high of 28.9°F (-1.7°C) and a low of 16.9°F (-8.4°C).

How cold is January in Granville?

The average high-temperature and low-temperature in Granville during January are 28.9°F (-1.7°C) and 16.9°F (-8.4°C) respectively.

What is the average humidity in January in Granville?

The average relative humidity in January in Granville is 83%.

What is the driest month in Granville?

The months with the least rainfall are January and December Rain falls for 5.9 days and accumulates 1.61" (41mm) of rain.

How many days does it rain in January in Granville?

In Granville, Illinois, during January, the rain falls for 5.9 days and regularly aggregates up to 1.61" (41mm) of precipitation.

What is the snowiest month in Granville?

January is the month with the most snowfall. Snow falls for 11.9 days and accumulates 4.09" (104mm) of snow.

How much does it snow in Granville in January?

In Granville, Illinois, during January, snow falls for 11.9 days and regularly aggregates up to 4.09" (104mm) of snow.

How many hours of daylight does Granville have in January?

In January, the average day length is 9h and 36min.

When is the sunrise / sunset in January in Granville?

In January, on the first day of the month, sunrise is at 7:22 am and sunset at 4:38 pm. On the last day of the month, in Granville, sunrise is at 7:09 am and sunset at 5:11 pm CST.

What is the month with the least sunshine in Granville?

The month with the least sunshine is January, with an average of 3.9h of sunshine.

How many hours of sunshine does Granville have in January?

The average sunshine duration in January in Granville, Illinois, is 3.9h.

When is the lowest UV index in Granville?

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

How high is the UV index in January in Granville?

In January, the average daily maximum UV index in Granville is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to 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
Granville, IL

Average temperature in January - Granville, IL
  • Average high temperature in January: 28.9°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 (28.9°F).

  • Average low temperature in January: 16.9°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in January
Granville, IL

Average pressure in January - Granville, IL
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Granville, IL

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

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in January
Granville, IL

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

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Granville, IL

Average rainfall in January - Granville, IL
  • Average rainfall in January: 1.61"

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and December (1.61").

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Average rainfall days in January
Granville, IL

Average rainfall days in January - Granville, IL
  • Average rainfall days in January: 5.9 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall in January
Granville, IL

Average snowfall in January - Granville, IL
  • Average snowfall in January: 4.09"

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Granville, IL

Average snowfall days in January - Granville, IL
  • Average snowfall days in January: 11.9 days

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July and August (0 days).

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

Average daylight in January / Average sunshine in January - Granville, 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 18min).

  • Average sunshine in January: 3h and 5min

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

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Average sunshine days in January
Granville, IL

Average sunshine days in January - Granville, IL
  • Average sunshine days in January: 14 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index in January
Granville, IL

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

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

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Average cloud cover in January
Granville, IL

Average cloud cover in January - Granville, IL
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).

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Average visibility in January
Granville, IL

Average visibility in January - Granville, IL
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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Granville, Illinois, USA

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