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 another cold winter month, with average temperature fluctuating between 17.8°F (-7.9°C) and 34.5°F (1.4°C).

Temperature

With an average high-temperature of 34.5°F (1.4°C) and an average low-temperature of 17.8°F (-7.9°C), January is the coldest month.

Humidity

In January, the average relative humidity in Hartford is 63.9%.

Rainfall

In Hartford, in January, during 10.8 rainfall days, 3.2" (82mm) of precipitation is typically accumulated. In Hartford, during the entire year, the rain falls for 130 days and collects up to 45.9" (1164.6mm) of precipitation.

Snowfall

Months with snowfall in Hartford are January through April, November and December. January is the month with the most snowfall. Snow falls for 5.8 days and accumulates 12.3" (312.4mm) of snow.

Daylight

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

Sunshine

In January, the average sunshine is 5.5h.

UV index

Months with the lowest UV index in Hartford are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for the average person.
The average daily UV index of 1 in January transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. 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 34.5°F (1.4°C) and an average low-temperature of 17.8°F (-7.9°C).

What is the temperature in January in Hartford?

In January, in Hartford, Connecticut, the average high-temperature is 34.5°F (1.4°C), and the average low-temperature is 17.8°F (-7.9°C).

What is the average humidity in January in Hartford?

In Hartford, the average relative humidity in January is 63.9%.

How many days does it rain in January in Hartford?

In Hartford, in January, during 10.8 rainfall days, 3.2" (82mm) of precipitation is typically accumulated.

How many days does it snow in January in Hartford?

In January, in Hartford, Connecticut, it is snowing for 5.8 days. Throughout January, 12.3" (312.4mm) of snow is accumulated.

When does it snow the most in Hartford?

The month with the most snowfall in Hartford, Connecticut, is January when snow falls for 5.8 days and typically aggregates up to 12.3" (312.4mm) of snow.

How many hours of daylight does Hartford have in January?

The average length of the day in January in Hartford is 9.6h.

How many hours of sunshine does Hartford have in January?

In January, the average sunshine in Hartford, Connecticut, is 5.5h.

When is the lowest UV index in Hartford?

Months with the lowest UV index in Hartford are January and December, with an average maximum UV index of 1.

What is the UV index intensity in January in Hartford?

The average daily maximum UV index in January in Hartford is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in January - Hartford, CT
  • Average high temperature in January: 34.5°F

The warmest month (with the highest average high temperature) is July (84.5°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in January: 17.7°F

The month with the highest average low temperature is July (62.7°F).
The coldest month (with the lowest average low temperature) is January (17.7°F).

Average humidity in January - Hartford, CT
  • Average humidity in January: 63.9%

The month with the highest relative humidity is September (72.9%).
The month with the lowest relative humidity is April (58%).

Average rainfall in January - Hartford, CT
  • Average rainfall in January: 3.2"

Wettest months (with the highest rainfall) are May, June and October (4.4").
The driest month (with the lowest rainfall) is February (2.9").

Average rainfall days in January - Hartford, CT
  • Average rainfall days in January: 10.8 days

The month with the highest number of rainy days is May (12.8 days).
The month with the lowest number of rainy days is February (9.7 days).

Average snowfall in January - Hartford, CT
  • Average snowfall in January: 12.3"

The month with the highest snowfall is January (12.3").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in January - Hartford, CT
  • Average snowfall days in January: 5.8 days

The month with the highest number of snowfall days is January (5.8 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (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: 5.5h

The month with most sunshine is July (Average sunshine: 9.5h).
The month with least sunshine is December (Average sunshine: 4.5h).

Average UV index in January - Hartford, CT
  • Average UV index in January: 1

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).