January weather forecast and climate
Port Jervis, NY

January, the same as December, is another cold winter month in Port Jervis, New York, with average temperature ranging between max 32°F (0°C) and min 18.9°F (-7.3°C).

Temperature

With an average high-temperature of 32°F (0°C) and an average low-temperature of 18.9°F (-7.3°C), January is the coldest month.

Humidity

In January, the average relative humidity in Port Jervis is 80%.

Rainfall

The month with the least rainfall is January when the rain falls for 8.6 days and typically collects 1.02" (26mm) of precipitation.

Snowfall

Months with snowfall in Port Jervis are January through May, October through December. In Port Jervis, during January, snow falls for 9.9 days and regularly aggregates up to 2.72" (69mm) of snow. In Port Jervis, during the entire year, snow falls for 36.1 days, and aggregates up to 9.8" (249mm) of snow.

Daylight

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

Sunshine

The average sunshine in Port Jervis is 4.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Port Jervis. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for 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.

What is the coldest month in Port Jervis?

With an average high-temperature of 32°F (0°C) and an average low-temperature of 18.9°F (-7.3°C), January is the coldest month.

What is the temperature in January in Port Jervis?

In January, in Port Jervis, the average high-temperature is 32°F (0°C), and the average low-temperature is 18.9°F (-7.3°C).

What is the average humidity in January in Port Jervis?

In Port Jervis, the average relative humidity in January is 80%.

How many days does it rain in January in Port Jervis?

In January, the rain falls for 8.6 days. Throughout January, 1.02" (26mm) of precipitation is accumulated.

What is the driest month in Port Jervis?

January is the month with the least rainfall in Port Jervis, New York. Rain falls for 8.6 days and accumulates 1.02" (26mm) of precipitation.

How many days does it snow in January in Port Jervis?

In Port Jervis, New York, in January, snow falls for 9.9 days, with typically accumulated 2.72" (69mm) of snow.

What is the average length of the day in January in Port Jervis?

In January, the average length of the day in Port Jervis, New York, is 9.6h.

How many hours of sunshine does Port Jervis have in January?

The average sunshine in January in Port Jervis, New York, is 4.6h.

What are the months with the lowest UV index in Port Jervis?

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

How high is the UV index in January in Port Jervis?

In Port Jervis, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in January - Port Jervis, NY
  • Average high temperature in January: 0°C

The warmest month (with the highest average high temperature) is July (28.1°C).
The month with the lowest average high temperature is January (0°C).

  • Average low temperature in January: -7.3°C

The month with the highest average low temperature is July (15.7°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in January - Port Jervis, NY
  • Average pressure in January: 1018.1mbar

The month with the highest atmospheric pressure is November (1019.6mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in January - Port Jervis, NY
  • Average wind speed in January: 12.1km/h

The windiest month (with the highest average wind speed) is March (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

Average humidity in January - Port Jervis, NY
  • Average humidity in January: 80%

Months with the highest relative humidity are February and December (83%).
Months with the lowest relative humidity are April and July (77%).

Average rainfall in January - Port Jervis, NY
  • Average rainfall in January: 26mm

The wettest month (with the highest rainfall) is May (60mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in January - Port Jervis, NY
  • Average rainfall days in January: 8.6 days

The month with the highest number of rainy days is May (16.7 days).
Months with the least rainy days are January and February (8.6 days).

Average snowfall in January - Port Jervis, NY
  • Average snowfall in January: 69mm

The month with the highest snowfall is February (78mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in January - Port Jervis, NY
  • Average snowfall days in January: 9.9 days

The month with the highest number of snowfall days is February (10 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Port Jervis, NY
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 4.6h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.2h).

Average sunshine days in January - Port Jervis, NY
  • Average sunshine days in January: 15.9 days

The month with the most sunshine days is October (17.4 days).
Months with the least sunshine days are April and May (11.8 days).

Average UV index in January - Port Jervis, NY
  • Average UV index in January: 2

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

Average cloud cover in January - Port Jervis, NY
  • Average cloud cover in January: 49

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in January - Port Jervis, NY
  • Average visibility in January: 8km

Months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (8km).
The month with the lowest visibility is September (7km).