January weather forecast
Cottonwood, IL

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Weather in January

January, the same as December, is an icy winter month in Cottonwood, Illinois, with an average temperature fluctuating between 26.8°F (-2.9°C) and 39.7°F (4.3°C).

Temperature

Cottonwood's temperature records reveal January as the coldest month, marked by average highs of 39.7°F (4.3°C) and lows of 26.8°F (-2.9°C).

Humidity

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

Rainfall

In Cottonwood, Illinois, in January, it is raining for 9.3 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Cottonwood, Illinois, there are 146.3 rainfall days, and 24.96" (634mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In January, in Cottonwood, it is snowing for 4.8 days. Throughout January, 0.71" (18mm) of snow is accumulated. In Cottonwood, during the entire year, snow falls for 15.9 days and aggregates up to 3.58" (91mm) of snow.

Daylight

In January, the average length of the day in Cottonwood is 9h and 53min.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of January, in Cottonwood, sunrise is at 6:57 am and sunset at 5:14 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.5h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Cottonwood. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What is the coldest month in Cottonwood?

With its average high temperature of 39.7°F (4.3°C) and a low of 26.8°F (-2.9°C), January is regarded as the coldest month in Cottonwood, Illinois.

How cold is January in Cottonwood?

The average high-temperature, in January, in Cottonwood, is 39.7°F (4.3°C), while the average low-temperature is 26.8°F (-2.9°C).

What is the average humidity in January in Cottonwood?

The average relative humidity in January in Cottonwood, Illinois, is 77%.

How much does it rain in Cottonwood in January?

In Cottonwood, Illinois, in January, it is raining for 9.3 days, with typically 1.97" (50mm) of accumulated precipitation.

How much does it snow in Cottonwood in January?

In Cottonwood, Illinois, during January, snow falls for 4.8 days and regularly aggregates up to 0.71" (18mm) of snow.

How many hours of daylight does Cottonwood have in January?

The average day length in January is 9h and 53min.

What time are sunrise and sunset in January in Cottonwood?

In January, on the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, in Cottonwood, sunrise is at 6:57 am and sunset at 5:14 pm CST.

What is the month with the least sunshine in Cottonwood?

January has the least sunshine of the year, with an average of 4.5h of sunshine.

How long on average sun shines in January in Cottonwood?

In January, the average sunshine duration in Cottonwood, Illinois, is 4.5h.

When is the lowest UV index in Cottonwood?

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

What is the UV index reading in January in Cottonwood?

In January, the average daily maximum UV index in Cottonwood, Illinois, is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from 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
Cottonwood, IL

Average temperature in January - Cottonwood, IL
  • Average high temperature in January: 39.7°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in January: 26.8°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in January
Cottonwood, IL

Average pressure in January - Cottonwood, 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 (29.95"Hg).

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Average wind speed in January
Cottonwood, IL

Average wind speed in January - Cottonwood, IL
  • Average wind speed in January: 9.7mph

The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in January
Cottonwood, IL

Average humidity in January - Cottonwood, IL
  • Average humidity in January: 77%

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

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Average rainfall in January
Cottonwood, IL

Average rainfall in January - Cottonwood, IL
  • Average rainfall in January: 1.97"

The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.14").

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Average rainfall days in January
Cottonwood, IL

Average rainfall days in January - Cottonwood, IL
  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9 days).

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Average snowfall in January
Cottonwood, IL

Average snowfall in January - Cottonwood, IL
  • Average snowfall in January: 0.71"

The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Cottonwood, IL

Average snowfall days in January - Cottonwood, IL
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is January (4.8 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
Cottonwood, IL

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in January
Cottonwood, IL

Average sunshine days in January - Cottonwood, IL
  • Average sunshine days in January: 17 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (11.2 days).

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Average UV index in January
Cottonwood, IL

Average UV index in January - Cottonwood, 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 and December (UV index 2).

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Average cloud cover in January
Cottonwood, IL

Average cloud cover in January - Cottonwood, IL
  • Average cloud cover in January: 51

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in January
Cottonwood, IL

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

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