January weather forecast
Clay City, IL

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Weather in January

January, the same as December, is another cold winter month in Clay City, Illinois, with an average temperature varying between 36.7°F (2.6°C) and 24.3°F (-4.3°C).

Temperature

In Clay City, Illinois, the lowest average temperatures are observed in January, with a high of 36.7°F (2.6°C) and a low of 24.3°F (-4.3°C).

Humidity

In January, the average relative humidity is 77%.

Rainfall

In January, the rain falls for 9.3 days. Throughout January, 2.44" (62mm) of precipitation is accumulated. In Clay City, during the entire year, the rain falls for 167.3 days and collects up to 37.17" (944mm) of precipitation.

Snowfall

Months with snowfall in Clay City are January through April, October through December. January is the month with the most snowfall in Clay City. Snow falls for 7.1 days and accumulates 2.05" (52mm) of snow.

Daylight

The average length of the day in January in Clay City, Illinois, is 9h and 50min.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:00 am and sunset at 5:13 pm CST.

Sunshine

With an average of 4.4h of sunshine, January has the least sunshine of the year.

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 estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the coldest time of year in Clay City?

Clay City's January weather reaches an average high of 36.7°F (2.6°C) and an average low of 24.3°F (-4.3°C), making it the coldest month.

How cold is it in Clay City in January?

During January, Clay City experiences an average high-temperature of 36.7°F (2.6°C) and a low-temperature of 24.3°F (-4.3°C).

What is the average humidity in January in Clay City?

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

How many days does it rain in January in Clay City?

In Clay City, in January, it is raining for 9.3 days, with typically 2.44" (62mm) of accumulated precipitation.

When does it snow the most in Clay City?

The month with the most snowfall in Clay City is January, when snow falls for 7.1 days and typically aggregates up to 2.05" (52mm) of snow.

How many days does it snow in January in Clay City?

In Clay City, Illinois, during January, snow falls for 7.1 days and regularly aggregates up to 2.05" (52mm) of snow.

What is the average length of the day in January in Clay City?

The average day length in January is 9h and 50min.

When is the sunrise / sunset in January in Clay City?

On the first day of January in Clay City, sunrise is at 7:11 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:13 pm CST.

What is the month with the least sunshine in Clay City?

The month with the least sunshine in Clay City, Illinois, is January, with an average of 4.4h of sunshine.

How long on average sun shines in January in Clay City?

The average sunshine duration in January in Clay City is 4.4h.

What are the months with the lowest UV index in Clay City?

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

What is the UV index reading in January in Clay City?

In Clay City, Illinois, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
41.9°F 5.5°C
36.7°F 2.6°C
41.7°F 5.4°C
Average low temperature
30.4°F -0.9°C
24.3°F -4.3°C
28.2°F -2.1°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.12" 765mmHg
Average wind speed
9.4mph 15.1km/h
10.3mph 16.6km/h
10.3mph 16.6km/h
Average max. wind speed
10.1mph 16.3km/h
10.9mph 17.5km/h
10.9mph 17.5km/h
Average wind speed gusts
15.4mph 24.8km/h
16.5mph 26.6km/h
16.3mph 26.2km/h
Average humidity
78%
77%
78%
Average rainfall
2.6" 66mm
2.44" 62mm
2.09" 53mm
Average rainfall days
10.9
9.3
9.7
Average snowfall
1.3" 33mm
2.05" 52mm
1.85" 47mm
Average snowfall days
4.7
7.1
6
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
4h 4min
4h 2min
4h 4min
Average sunshine days
16.7
15.3
12.3
Average UV index
2
2
2
Average cloud cover
50%
52%
51%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Clay City, IL

Average temperature in January - Clay City, IL
  • Average high temperature in January: 36.7°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 (36.7°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in January
Clay City, IL

Average pressure in January - Clay City, IL
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Clay City, IL

Average wind speed in January - Clay City, 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 (6mph).

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Average humidity in January
Clay City, IL

Average humidity in January - Clay City, IL
  • Average humidity in January: 77%

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

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Average rainfall in January
Clay City, IL

Average rainfall in January - Clay City, IL
  • Average rainfall in January: 2.44"

The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").

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Average rainfall days in January
Clay City, IL

Average rainfall days in January - Clay City, IL
  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in January
Clay City, IL

Average snowfall in January - Clay City, IL
  • Average snowfall in January: 2.05"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Clay City, IL

Average snowfall days in January - Clay City, IL
  • Average snowfall days in January: 7.1 days

The month with the highest number of snowfall days is January (7.1 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
Clay City, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in January
Clay City, IL

Average sunshine days in January - Clay City, IL
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).

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Average UV index in January
Clay City, IL

Average UV index in January - Clay City, IL
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (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
Clay City, IL

Average cloud cover in January - Clay City, IL
  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in January
Clay City, IL

Average visibility in January - Clay City, 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).

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Clay City, Illinois, USA

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