January weather forecast
Hartford, IL

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Weather in January

January, like December, in Hartford, Illinois, is an icy winter month, with an average temperature fluctuating between 23.4°F (-4.8°C) and 36.1°F (2.3°C).

Temperature

January, with average temperatures reaching a high of 36.1°F (2.3°C) and a low of 23.4°F (-4.8°C), is the coldest month.

Humidity

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

Rainfall

In January, in Hartford, the rain falls for 5.6 days. Throughout January, 1.26" (32mm) of precipitation is accumulated. In Hartford, during the entire year, the rain falls for 138 days and collects up to 23.9" (607mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Hartford. In Hartford, during January, snow falls for 6 days and regularly aggregates up to 1.18" (30mm) of snow. Throughout the year, in Hartford, there are 18.6 snowfall days, and 4.53" (115mm) of snow is accumulated.

Daylight

In Hartford, the average length of the day in January is 9h and 49min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:20 pm CST.

Sunshine

January and February, with an average of 4.5h of sunshine, are months with the least sunshine in Hartford.

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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, an average UV index of 2 transforms into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Boost your sun resistance with garments that are densely woven yet spacious. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What are the coldest months in Hartford?

January is the month that records the lowest temperatures in Hartford, Illinois, with averages ranging from a high of 36.1°F (2.3°C) to a low of 23.4°F (-4.8°C).

How cold is January in Hartford?

The average high-temperature, in January, in Hartford, is 36.1°F (2.3°C), while the average low-temperature is 23.4°F (-4.8°C).

What is the average humidity in January in Hartford?

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

How many days does it rain in January in Hartford?

In Hartford, Illinois, in January, during 5.6 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

How much does it snow in Hartford in January?

In Hartford, Illinois, during January, snow falls for 6 days and regularly aggregates up to 1.18" (30mm) of snow.

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

In January, the average day length in Hartford is 9h and 49min.

When are sunrise and sunset in January in Hartford?

On the first day of January, sunrise is at 7:18 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:20 pm CST.

What are the months with the least sunshine in Hartford?

January and February, with an average of 4.5h of sunshine, are months with the least sunshine in Hartford.

How long on average sun shines in January in Hartford?

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

What is the month with the lowest UV index in Hartford?

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

How high is the UV index in January in Hartford?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Hartford, IL

Average temperature in January - Hartford, IL
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in January
Hartford, IL

Average pressure in January - Hartford, 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 (29.92"Hg).

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Average wind speed in January
Hartford, IL

Average wind speed in January - Hartford, IL
  • Average wind speed in January: 9.6mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in January
Hartford, IL

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

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Hartford, IL

Average rainfall in January - Hartford, IL
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in January
Hartford, IL

Average rainfall days in January - Hartford, IL
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall in January
Hartford, IL

Average snowfall in January - Hartford, IL
  • Average snowfall in January: 1.18"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Hartford, IL

Average snowfall days in January - Hartford, IL
  • Average snowfall days in January: 6 days

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

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Average sunshine days in January
Hartford, IL

Average sunshine days in January - Hartford, IL
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in January
Hartford, IL

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

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Average cloud cover in January
Hartford, IL

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

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

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Average visibility in January
Hartford, IL

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

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