January weather forecast
Port Republic, NJ

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Weather in January

January, the same as December, is another cold winter month in Port Republic, New Jersey, with an average temperature varying between 39.9°F (4.4°C) and 30.4°F (-0.9°C).

Temperature

January, recording an average high temperature of 39.9°F (4.4°C) and a low temperature of 30.4°F (-0.9°C), is Port Republic's coldest month.

Humidity

The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.

Rainfall

In Port Republic, in January, during 4.5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 86.1 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. January is the month with the most snowfall. Snow falls for 1.9 days and accumulates 0.2" (5mm) of snow.

Daylight

The average length of the day in January is 9h and 46min.
On the first day of January, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:16 pm EST.

Sunshine

In Port Republic, New Jersey, the average sunshine in January is 5.2h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Port Republic, New Jersey. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 2 during January morphs into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

What month is the coldest?

January stands out as Port Republic's coldest month, with an average high-temperature of 39.9°F (4.4°C) and a low-temperature of 30.4°F (-0.9°C).

How cold does it get in January?

In January, in Port Republic, the average high-temperature is 39.9°F (4.4°C), and the average low-temperature is 30.4°F (-0.9°C).

What are the least humid months?

The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in January?

The average relative humidity in January is 74%.

How much does it rain in January?

In Port Republic, during January, the rain falls for 4.5 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When does it snow the most?

The month with the most snowfall in Port Republic is January, when snow falls for 1.9 days and typically aggregates up to 0.2" (5mm) of snow.

How much does it snow in January?

In Port Republic, in January, snow falls for 1.9 days, with typically accumulated 0.2" (5mm) of snow.

How many hours of daylight does Port Republic have in January?

In Port Republic, the average day length in January is 9h and 46min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:16 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 5.2h.

When is the lowest UV index?

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

What is the UV index reading in January?

In Port Republic, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe 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
Port Republic, NJ

Average temperature in January - Port Republic, NJ
  • Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in January: 30.4°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

Average pressure in January
Port Republic, NJ

Average pressure in January - Port Republic, 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 (29.94"Hg).

Average wind speed in January
Port Republic, NJ

Average wind speed in January - Port Republic, NJ
  • Average wind speed in January: 11.7mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (8mph).

Average humidity in January
Port Republic, NJ

Average humidity in January - Port Republic, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in January
Port Republic, NJ

Average rainfall in January - Port Republic, NJ
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in January
Port Republic, NJ

Average rainfall days in January - Port Republic, NJ
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in January
Port Republic, NJ

Average snowfall in January - Port Republic, NJ
  • Average snowfall in January: 0.2"

The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in January
Port Republic, NJ

Average snowfall days in January - Port Republic, NJ
  • Average snowfall days in January: 1.9 days

The month with the highest number of snowfall days is January (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in January /
Average sunshine in January
Port Republic, NJ

Average daylight in January / Average sunshine in January - Port Republic, NJ
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in January
Port Republic, NJ

Average sunshine days in January - Port Republic, NJ
  • Average sunshine days in January: 24.3 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is August (18.2 days).

Average UV index in January
Port Republic, NJ

Average UV index in January - Port Republic, NJ
  • 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 and December (UV index 2).

Average cloud cover in January
Port Republic, NJ

Average cloud cover in January - Port Republic, NJ
  • Average cloud cover in January: 42

The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in January
Port Republic, NJ

Average visibility in January - Port Republic, NJ
  • 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).

Port Republic, New Jersey, USA

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