Hartford
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Hartford, CT

Skyscape view of the city of Hartford, Connecticut, with the roads leading to the town, and trees on roadsides
Skyscape view of the city of Hartford, Connecticut, with the roads leading to the town, and trees on roadsides
January, like December, in Hartford, Connecticut, is a wintry winter month, with average temperature varying between 33.1°F (0.6°C) and 21.4°F (-5.9°C).

Temperature

The coldest month is January, with an average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.4°F (-5.9°C).

Humidity

The average relative humidity in Hartford, Connecticut, is 76%.

Rainfall

In Hartford, Connecticut, during January, the rain falls for 6.9 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 113.2 rainfall days, and 10.24" (260mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Hartford are January through May, November and December. In Hartford, during January, snow falls for 5.5 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, in Hartford, there are 21.5 snowfall days, and 4.45" (113mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9.6h.

Sunshine

The average sunshine in Hartford is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hartford, Connecticut. A UV Index value of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Hartford?

The coldest month is January, with an average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.4°F (-5.9°C).

What is the temperature in January in Hartford?

In Hartford, in January, the average high-temperature is 33.1°F (0.6°C), and the average low-temperature is 21.4°F (-5.9°C).

What is the average humidity in January in Hartford?

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

How much does it rain in Hartford in January?

In Hartford, in January, during 6.9 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

How many days does it snow in January in Hartford?

In Hartford, Connecticut, during January, snow falls for 5.5 days and regularly aggregates up to 0.91" (23mm) of snow.

How many hours of daylight does Hartford have in January?

In January, the average length of the day in Hartford, Connecticut, is 9.6h.

How long on average sun shines in January in Hartford?

In January, the average sunshine is 5.1h.

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

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

What is the UV index reading in January in Hartford?

In Hartford, Connecticut, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
Average temperature in January - Hartford, CT
  • Average high temperature in January: 0.6°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (0.6°C).

  • Average low temperature in January: -5.9°C

The month with the highest average low temperature is July (17.6°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).

Average humidity in January - Hartford, CT
  • Average humidity in January: 76%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

Average rainfall in January - Hartford, CT
  • Average rainfall in January: 16mm

Wettest months (with the highest rainfall) are June and July (27mm).
The driest month (with the lowest rainfall) is September (11mm).

Average rainfall days in January - Hartford, CT
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is July (11.8 days).
The month with the lowest number of rainy days is February (6.8 days).

Average snowfall in January - Hartford, CT
  • Average snowfall in January: 23mm

The month with the highest snowfall is February (29mm).
Months with the lowest snowfall are June, July, August, September and October (0mm).

Average snowfall days in January - Hartford, CT
  • Average snowfall days in January: 5.5 days

The month with the highest number of snowfall days is February (5.7 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Hartford, CT
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 5.1h

Months with most sunshine are July and August (Average sunshine: 10.4h).
The month with least sunshine is February (Average sunshine: 4.6h).

Average UV index in January - Hartford, CT
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).