January weather forecast
Adair, IL

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Weather in January

January, the same as December, in Adair, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 30.9°F (-0.6°C) and an average low of 19°F (-7.2°C).

Temperature

January, with its high-temperature average of 30.9°F (-0.6°C) and a low-temperature average of 19°F (-7.2°C), is the coldest month.

Humidity

In January, the average relative humidity is 81%.

Rainfall

January is the month with the least rainfall in Adair, Illinois. Rain falls for 4.2 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

Months with snowfall in Adair, Illinois, are January through April, October through December. The month with the most snowfall is January, when snow falls for 7.6 days and typically aggregates up to 1.89" (48mm) of snow.

Daylight

The average length of the day in January in Adair is 9h and 41min.
On the first day of January, sunrise is at 7:24 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:18 pm CST.

Sunshine

With an average of 4.1h 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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. 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 Adair?

In Adair, January registers the lowest temperatures, averaging 30.9°F (-0.6°C) at the peak and 19°F (-7.2°C) at the lowest.

How cold is it in Adair in January?

An average high-temperature, in January, in Adair, is 30.9°F (-0.6°C) and the average low-temperature is 19°F (-7.2°C).

What is the average humidity in January in Adair?

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

What is the driest month in Adair?

January is the month with the least rainfall in Adair, Illinois. Rain falls for 4.2 days and accumulates 0.67" (17mm) of precipitation.

How many days does it rain in January in Adair?

In Adair, during January, the rain falls for 4.2 days and regularly aggregates up to 0.67" (17mm) of precipitation.

What is the snowiest month in Adair?

The month with the most snowfall in Adair is January, when snow falls for 7.6 days and typically aggregates up to 1.89" (48mm) of snow.

How many days does it snow in January in Adair?

In Adair, during January, snow falls for 7.6 days and regularly aggregates up to 1.89" (48mm) of snow.

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

The average day length in January in Adair is 9h and 41min.

What time are sunrise and sunset in January in Adair?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 4:45 pm. On the last day of the month, in Adair, sunrise is at 7:12 am and sunset at 5:18 pm CST.

What is the month with the least sunshine in Adair?

The month with the least sunshine in Adair is January, with an average of 4.1h of sunshine.

How long on average sun shines in January in Adair?

The average sunshine duration in January in Adair, Illinois, is 4.1h.

When is the lowest UV index in Adair?

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

How high is the UV index in January in Adair?

In Adair, Illinois, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
37°F 2.8°C
30.9°F -0.6°C
36°F 2.2°C
Average low temperature
25.7°F -3.5°C
19°F -7.2°C
22.5°F -5.3°C
Average pressure
30.12" 765mmHg
30.14" 766mmHg
30.12" 765mmHg
Average wind speed
10mph 16.1km/h
10.6mph 17.1km/h
10.4mph 16.7km/h
Average max. wind speed
10.6mph 17.1km/h
11.3mph 18.2km/h
11.1mph 17.9km/h
Average wind speed gusts
16mph 25.7km/h
16.7mph 26.9km/h
16.4mph 26.4km/h
Average humidity
79%
81%
79%
Average rainfall
0.75" 19mm
0.67" 17mm
0.79" 20mm
Average rainfall days
5.6
4.2
4.6
Average snowfall
0.79" 20mm
1.89" 48mm
1.26" 32mm
Average snowfall days
4.9
7.6
6.9
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 4min
4h 1min
4h 2min
Average sunshine days
20.6
19.8
17.8
Average UV index
2
2
2
Average cloud cover
51%
56%
53%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Adair, IL

Average temperature in January - Adair, IL
  • Average high temperature in January: 30.9°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 (30.9°F).

  • Average low temperature in January: 19°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 (19°F).

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Average pressure in January
Adair, IL

Average pressure in January - Adair, 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 (29.91"Hg).

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Average wind speed in January
Adair, IL

Average wind speed in January - Adair, IL
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in January
Adair, IL

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

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
Adair, IL

Average rainfall in January - Adair, IL
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in January
Adair, IL

Average rainfall days in January - Adair, IL
  • Average rainfall days in January: 4.2 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in January
Adair, IL

Average snowfall in January - Adair, IL
  • Average snowfall in January: 1.89"

The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Adair, IL

Average snowfall days in January - Adair, IL
  • Average snowfall days in January: 7.6 days

The month with the highest number of snowfall days is January (7.6 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
Adair, IL

Average daylight in January / Average sunshine in January - Adair, 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in January
Adair, IL

Average sunshine days in January - Adair, IL
  • Average sunshine days in January: 19.8 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in January
Adair, IL

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

The months with the highest UV index are 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
Adair, IL

Average cloud cover in January - Adair, 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 August and September (Cloud cover 30).

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Average visibility in January
Adair, IL

Average visibility in January - Adair, IL
  • Average visibility in January: 6mi

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

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Adair, Illinois, USA

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