January weather forecastSidney, IL

January

Weather in January

January, the same as December, in Sidney, Illinois, is a freezing cold winter month, with temperature in the range of an average high of 31.8°F (-0.1°C) and an average low of 20.5°F (-6.4°C).

Temperature

The coldest period is January, when temperatures fluctuate between an average high of 31.8°F (-0.1°C) and a low of 20.5°F (-6.4°C).

Humidity

In January, the average relative humidity in Sidney is 80%.

Rainfall

In Sidney, during January, the rain falls for 6 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Sidney, during the entire year, the rain falls for 129.9 days and collects up to 18.15" (461mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 8.7 days and accumulates 1.85" (47mm) of snow.

Daylight

The average length of the day in January is 9h and 43min.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:37 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:09 pm CST.

Sunshine

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

UV index

The months with the lowest UV index are January, February, November 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 unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 2 in January translates into this advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January is the coldest month of the year, registering average temperatures as high as 31.8°F (-0.1°C) and as low as 20.5°F (-6.4°C).

In Sidney, in January, the average high-temperature is 31.8°F (-0.1°C), and the average low-temperature is 20.5°F (-6.4°C).

In Sidney, the average relative humidity in January is 80%.

In Sidney, in January, it is raining for 6 days, with typically 1.26" (32mm) of accumulated precipitation.

The month with the most snowfall is January, when snow falls for 8.7 days and typically aggregates up to 1.85" (47mm) of snow.

In Sidney, in January, snow falls for 8.7 days, with typically accumulated 1.85" (47mm) of snow.

The average day length in January is 9h and 43min.

In January, on the first day of the month, sunrise is at 7:14 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:09 pm CST.

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

In January, the average sunshine duration is 4h.

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

In Sidney, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Sidney, IL

  • Average high temperature in January: 31.8°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 (31.8°F).

  • Average low temperature in January: 20.5°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in January
Sidney, 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 (29.92"Hg).

Average wind speed in January
Sidney, IL

  • Average wind speed in January: 10.8mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in January
Sidney, IL

  • Average humidity in January: 80%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

Average rainfall in January
Sidney, IL

  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

Average rainfall days in January
Sidney, IL

  • Average rainfall days in January: 6 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

Average snowfall in January
Sidney, IL

  • Average snowfall in January: 1.85"

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Sidney, IL

  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Sidney, IL

  • Average daylight in January: 9h and 42min

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 24min).

  • Average sunshine in January: 4h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in January
Sidney, IL

  • Average sunshine days in January: 18.3 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in January
Sidney, 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).

Average cloud cover in January
Sidney, IL

  • Average cloud cover in January: 57

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in January
Sidney, 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).