January weather forecast
Blackstone, IL

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Weather in January

January, the same as December, in Blackstone, Illinois, is a freezing cold winter month, with an average temperature ranging between min 17.8°F (-7.9°C) and max 29.5°F (-1.4°C).

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of 29.5°F (-1.4°C) to a low of 17.8°F (-7.9°C).

Humidity

In Blackstone, the average relative humidity in January is 82%.

Rainfall

In Blackstone, in January, during 5.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 145 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Blackstone. In Blackstone, Illinois, in January, during 11.8 snowfall days, 2.87" (73mm) of snow is typically accumulated. Throughout the year, there are 37.9 snowfall days, and 12.91" (328mm) of snow is accumulated.

Daylight

In January, the average length of the day in Blackstone, Illinois, is 9h and 37min.
On the first day of January in Blackstone, sunrise is at 7:19 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:09 pm CST.

Sunshine

The month with the least sunshine in Blackstone, Illinois, is January, with an average of 3.8h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Blackstone. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: During January, 1 as the daily maximum UV index converts into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Blackstone?

The coldest period in Blackstone, Illinois, tends to be January, when average temperatures fluctuate between a high of 29.5°F (-1.4°C) and a low of 17.8°F (-7.9°C).

How cold is it in Blackstone in January?

An average high-temperature, in January, in Blackstone, is 29.5°F (-1.4°C) and the average low-temperature is 17.8°F (-7.9°C).

What is the average humidity in January in Blackstone?

In January, the average relative humidity in Blackstone, Illinois, is 82%.

How many days does it rain in January in Blackstone?

In Blackstone, in January, it is raining for 5.5 days, with typically 1.38" (35mm) of accumulated precipitation.

How many days does it snow in January in Blackstone?

In Blackstone, Illinois, during January, snow falls for 11.8 days and regularly aggregates up to 2.87" (73mm) of snow.

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

In January, the average day length in Blackstone is 9h and 37min.

What time are sunrise and sunset in January in Blackstone?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 4:36 pm. On the last day of the month, in Blackstone, sunrise is at 7:06 am and sunset at 5:09 pm CST.

What is the month with the least sunshine in Blackstone?

The month with the least sunshine in Blackstone, Illinois, is January, with an average of 3.8h of sunshine.

How long on average sun shines in January in Blackstone?

The average sunshine duration in January in Blackstone, Illinois, is 3.8h.

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

The months with the lowest UV index in Blackstone, Illinois, are January and December, with an average maximum UV index of 1.

How high is the UV index in January in Blackstone?

In Blackstone, Illinois, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
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
Blackstone, IL

Average temperature in January - Blackstone, IL
  • Average high temperature in January: 29.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in January: 17.8°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in January
Blackstone, IL

Average pressure in January - Blackstone, IL
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Blackstone, IL

Average wind speed in January - Blackstone, IL
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in January
Blackstone, IL

Average humidity in January - Blackstone, IL
  • Average humidity in January: 82%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
Blackstone, IL

Average rainfall in January - Blackstone, IL
  • Average rainfall in January: 1.38"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").

Average rainfall days in January
Blackstone, IL

Average rainfall days in January - Blackstone, IL
  • Average rainfall days in January: 5.5 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in January
Blackstone, IL

Average snowfall in January - Blackstone, IL
  • Average snowfall in January: 2.87"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Blackstone, IL

Average snowfall days in January - Blackstone, IL
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is January (11.8 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
Blackstone, IL

Average daylight in January / Average sunshine in January - Blackstone, IL
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in January
Blackstone, IL

Average sunshine days in January - Blackstone, IL
  • Average sunshine days in January: 14.7 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).

Average UV index in January
Blackstone, IL

Average UV index in January - Blackstone, IL
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Blackstone, IL

Average cloud cover in January - Blackstone, IL
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in January
Blackstone, IL

Average visibility in January - Blackstone, 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).

Blackstone, Illinois, USA

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