January weather forecast and climate
Hartford, CT

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

Temperature

January is the coldest month, 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

In Hartford, the average relative humidity is 76%.

Rainfall

In Hartford, 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

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

Daylight

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

Sunshine

In January, the average sunshine 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. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Hartford?

January is the coldest month in Hartford, 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?

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

What is the average humidity in January in Hartford?

The average relative humidity in January in Hartford is 76%.

How many days does it rain in January in Hartford?

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

How many hours of sunshine does Hartford have in January?

In January, the average sunshine is 5.1h.

When is 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?

The average daily maximum UV index in January in Hartford is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.
Average temperature in January - Hartford, CT
  • Average high temperature in January: 33.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in January: 21.4°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

Average pressure in January - Hartford, CT
  • Average pressure in January: 30.03"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in January - Hartford, CT
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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: 0.63"

The wettest months (with the highest rainfall) are June and July (1.06").
The driest month (with the least rainfall) is September (0.43").

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 least rainy days is February (6.8 days).

Average snowfall in January - Hartford, CT
  • Average snowfall in January: 0.91"

The month with the highest snowfall is February (1.14").
Months with the least snowfall are June, July, August, September and October (0").

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 least 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 the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 5.1h

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

Average sunshine days in January - Hartford, CT
  • Average sunshine days in January: 20.4 days

Months with the most sunshine days are January and November (20.4 days).
The month with the least sunshine days is June (16.3 days).

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).

Average cloud cover in January - Hartford, CT
  • Average cloud cover in January: 45

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in January - Hartford, CT
  • Average visibility in January: 6mi

Months with the highest visibility are January, March, April, October, November and December (6mi).
Months with the lowest visibility are February, May, June, July, August and September (5mi).