January weather forecast
Simpson, IL

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Weather in January

January, the same as December, is another cold winter month in Simpson, Illinois, with an average temperature fluctuating between 40.1°F (4.5°C) and 27°F (-2.8°C).

Temperature

The month of January, characterized by an average high of 40.1°F (4.5°C) and a low of 27°F (-2.8°C), is recognized as the coldest.

Humidity

In January, the average relative humidity is 76%.

Rainfall

In Simpson, in January, it is raining for 7.3 days, with typically 0.75" (19mm) of accumulated precipitation. In Simpson, during the entire year, the rain falls for 118.3 days and collects up to 13.03" (331mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Simpson, in January, snow falls for 3.3 days, with typically accumulated 0.35" (9mm) of snow. Throughout the year, in Simpson, Illinois, there are 11 snowfall days, and 1.57" (40mm) of snow is accumulated.

Daylight

In Simpson, the average length of the day in January is 9h and 56min.
On the first day of January in Simpson, sunrise is at 7:09 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:17 pm CST.

Sunshine

January and February, with an average of 4.6h of sunshine, are months with the least sunshine in Simpson.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 2 in January translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What is the coldest time of year in Simpson?

Simpson's coldest month, January, generally records average temperatures ranging from a high of 40.1°F (4.5°C) to a low of 27°F (-2.8°C).

Is it cold in Simpson during January?

In Simpson, in January, the average high-temperature is 40.1°F (4.5°C), and the average low-temperature is 27°F (-2.8°C).

What is the average humidity in January in Simpson?

In January, the average relative humidity in Simpson, Illinois, is 76%.

How much does it rain in Simpson in January?

In January, in Simpson, Illinois, the rain falls for 7.3 days. Throughout January, 0.75" (19mm) of precipitation is accumulated.

How much does it snow in Simpson in January?

In Simpson, Illinois, in January, snow falls for 3.3 days, with typically accumulated 0.35" (9mm) of snow.

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

In January, the average day length in Simpson is 9h and 56min.

When is the sunrise / sunset in January in Simpson?

On the first day of January in Simpson, Illinois, sunrise is at 7:09 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:17 pm CST.

What is the month with the least sunshine in Simpson?

The months with the least sunshine in Simpson, Illinois, are January and February, with an average of 4.6h of sunshine.

How many hours of sunshine does Simpson have in January?

The average sunshine duration in January is 4.6h.

What are the months with the lowest UV index in Simpson?

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

What is the UV index intensity in January in Simpson?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe 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
Simpson, IL

Average temperature in January - Simpson, IL
  • Average high temperature in January: 40.1°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in January: 27°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure in January
Simpson, IL

Average pressure in January - Simpson, 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 (29.94"Hg).

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Average wind speed in January
Simpson, IL

Average wind speed in January - Simpson, IL
  • Average wind speed in January: 9mph

The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in January
Simpson, IL

Average humidity in January - Simpson, IL
  • Average humidity in January: 76%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Simpson, IL

Average rainfall in January - Simpson, IL
  • Average rainfall in January: 0.75"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").

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Average rainfall days in January
Simpson, IL

Average rainfall days in January - Simpson, IL
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).

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Average snowfall in January
Simpson, IL

Average snowfall in January - Simpson, IL
  • Average snowfall in January: 0.35"

The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Simpson, IL

Average snowfall days in January - Simpson, IL
  • Average snowfall days in January: 3.3 days

The month with the highest number of snowfall days is January (3.3 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
Simpson, IL

Average daylight in January / Average sunshine in January - Simpson, 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 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Simpson, IL

Average sunshine days in January - Simpson, IL
  • Average sunshine days in January: 21.4 days

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).

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Average UV index in January
Simpson, IL

Average UV index in January - Simpson, 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
Simpson, IL

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

The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

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Average visibility in January
Simpson, IL

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

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