January weather forecast
Summit, NJ

Weather in January

January, the same as December, is another cold winter month in Summit, New Jersey, with an average temperature fluctuating between 35.1°F (1.7°C) and 22.5°F (-5.3°C).

Temperature

The coldest month is January, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.5°F (-5.3°C).

Humidity

In Summit, New Jersey, the average relative humidity in January is 77%.

Rainfall

In Summit, in January, during 8.8 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, in Summit, there are 164.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In January, in Summit, it is snowing for 7.6 days. Throughout January, 2.17" (55mm) of snow is accumulated. Throughout the year, in Summit, there are 26 snowfall days, and 11.61" (295mm) of snow is accumulated.

Daylight

In Summit, the average length of the day in January is 9h and 39min.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:40 pm. On the last day of January, in Summit, sunrise is at 7:08 am and sunset at 5:13 pm EST.

Sunshine

In Summit, the average sunshine in January is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Summit?

With an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.5°F (-5.3°C), January is the coldest month in Summit, New Jersey.

What is the temperature in January in Summit?

In January, in Summit, New Jersey, the average high-temperature is 35.1°F (1.7°C), and the average low-temperature is 22.5°F (-5.3°C).

What is the average humidity in January in Summit?

In Summit, New Jersey, the average relative humidity in January is 77%.

How much does it rain in Summit in January?

In Summit, New Jersey, in January, during 8.8 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

How much does it snow in Summit in January?

In Summit, during January, snow falls for 7.6 days and regularly aggregates up to 2.17" (55mm) of snow.

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

In Summit, New Jersey, the average day length in January is 9h and 39min.

When are sunrise and sunset in January in Summit?

On the first day of January, sunrise is at 7:21 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:13 pm EST.

How long on average sun shines in January in Summit?

The average sunshine duration in January in Summit, New Jersey, is 4.9h.

When is the lowest UV index in Summit?

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

What is the UV index intensity in January in Summit?

In January, the average daily maximum UV index in Summit, New Jersey, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Summit, NJ

Average temperature in January - Summit, NJ
  • Average high temperature in January: 35.1°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in January: 22.5°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

[Resources]

Average pressure in January
Summit, NJ

Average pressure in January - Summit, NJ
  • Average pressure in January: 30.07"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in January
Summit, NJ

Average wind speed in January - Summit, NJ
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in January
Summit, NJ

Average humidity in January - Summit, NJ
  • Average humidity in January: 77%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April and August (74%).

[Resources]

Average rainfall in January
Summit, NJ

Average rainfall in January - Summit, NJ
  • Average rainfall in January: 1.93"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.69").

[Resources]

Average rainfall days in January
Summit, NJ

Average rainfall days in January - Summit, NJ
  • Average rainfall days in January: 8.8 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (8.8 days).

[Resources]

Average snowfall in January
Summit, NJ

Average snowfall in January - Summit, NJ
  • Average snowfall in January: 2.17"

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in January
Summit, NJ

Average snowfall days in January - Summit, NJ
  • Average snowfall days in January: 7.6 days

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in January /
Average sunshine in January
Summit, NJ

Average daylight in January / Average sunshine in January - Summit, NJ
  • Average daylight in January: 9h and 39min

The month with the longest days is June (Average daylight: 15h and 2min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in January: 4h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days in January
Summit, NJ

Average sunshine days in January - Summit, NJ
  • Average sunshine days in January: 16.9 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.5 days).

[Resources]

Average UV index in January
Summit, NJ

Average UV index in January - Summit, NJ
  • Average UV index in January: 2

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

[Resources]

Average cloud cover in January
Summit, NJ

Average cloud cover in January - Summit, NJ
  • Average cloud cover in January: 46

The months with the most cloud cover are February and March (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

[Resources]

Average visibility in January
Summit, NJ

Average visibility in January - Summit, NJ
  • Average visibility in January: 6mi

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location