January weather forecast
Geneseo, IL

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Weather in January

January, the same as December, in Geneseo, Illinois, is a freezing cold winter month, with an average temperature varying between 28°F (-2.2°C) and 16°F (-8.9°C).

Temperature

January, having an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 16°F (-8.9°C), is the coldest month.

Humidity

January and July, with an average relative humidity of 84%, are the most humid months in Geneseo.

Rainfall

January and December are months with the least rain in Geneseo when the rain falls for 4.1 days and typically aggregates up to 0.63" (16mm) of rain.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 9 days and typically aggregates up to 2.13" (54mm) of snow.

Daylight

The average length of the day in January in Geneseo is 9h and 35min.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:14 pm CST.

Sunshine

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

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Geneseo. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 1 in January transforms into this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What is the coldest month in Geneseo?

January, with average temperatures reaching a high of 28°F (-2.2°C) and a low of 16°F (-8.9°C), is the coldest month in Geneseo.

How cold is January in Geneseo?

In January, the average high-temperature and low-temperature in Geneseo, Illinois, are 28°F (-2.2°C) and 16°F (-8.9°C) respectively.

What are the most humid months in Geneseo?

The months with the highest humidity in Geneseo are January and July, with an average relative humidity of 84%.

What is the average humidity in January in Geneseo?

In January, the average relative humidity is 84%.

What is the driest month in Geneseo?

The months with the least rainfall in Geneseo are January and December Rain falls for 4.1 days and accumulates 0.63" (16mm) of rain.

How much does it rain in Geneseo in January?

In Geneseo, in January, during 4.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

When does it snow the most in Geneseo?

The month with the most snowfall in Geneseo, Illinois, is January, when snow falls for 9 days and typically aggregates up to 2.13" (54mm) of snow.

How much does it snow in Geneseo in January?

In Geneseo, in January, during 9 snowfall days, 2.13" (54mm) of snow is typically accumulated.

What is the average length of the day in January in Geneseo?

The average day length in January in Geneseo, Illinois, is 9h and 35min.

What time are sunrise and sunset in January in Geneseo?

On the first day of January, sunrise is at 7:26 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:14 pm CST.

What is the month with the least sunshine in Geneseo?

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

How long on average sun shines in January in Geneseo?

The average sunshine duration in January is 4h.

When is the lowest UV index in Geneseo?

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

What is the UV index reading in January in Geneseo?

In January, the average daily maximum UV index in Geneseo, Illinois, is 1. A UV Index estimate 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
Geneseo, IL

Average temperature in January - Geneseo, IL
  • Average high temperature in January: 28°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in January: 16°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16°F).

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Average pressure in January
Geneseo, IL

Average pressure in January - Geneseo, 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
Geneseo, IL

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

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in January
Geneseo, IL

Average humidity in January - Geneseo, IL
  • Average humidity in January: 84%

The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Geneseo, IL

Average rainfall in January - Geneseo, IL
  • Average rainfall in January: 0.63"

The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are January and December (0.63").

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Average rainfall days in January
Geneseo, IL

Average rainfall days in January - Geneseo, IL
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (3.9 days).

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Average snowfall in January
Geneseo, IL

Average snowfall in January - Geneseo, IL
  • Average snowfall in January: 2.13"

The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Geneseo, IL

Average snowfall days in January - Geneseo, IL
  • Average snowfall days in January: 9 days

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

Average daylight in January / Average sunshine in January - Geneseo, 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 12min).

  • Average sunshine in January: 4h

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

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Average sunshine days in January
Geneseo, IL

Average sunshine days in January - Geneseo, IL
  • Average sunshine days in January: 19.6 days

The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is June (12 days).

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Average UV index in January
Geneseo, IL

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

The month with the highest UV index is July (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
Geneseo, IL

Average cloud cover in January - Geneseo, IL
  • Average cloud cover in January: 58

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).

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Average visibility in January
Geneseo, IL

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

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