January weather forecast and climate
Rileyville, NJ

Weather in January

January, like December, in Rileyville, New Jersey, is another cold winter month, with average temperature varying between 36.5°F (2.5°C) and 23.5°F (-4.7°C).

Temperature

The coldest month is January, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 23.5°F (-4.7°C).

Humidity

The average relative humidity in Rileyville is 76%.

Rainfall

In Rileyville, during January, the rain falls for 5.8 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Rileyville, during the entire year, the rain falls for 107.3 days and collects up to 8.82" (224mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Rileyville, in January, snow falls for 3.7 days, with typically accumulated 0.47" (12mm) of snow. In Rileyville, during the entire year, snow falls for 15.5 days, and aggregates up to 2.76" (70mm) of snow.

Daylight

The average length of the day in January is 9.7h.

Sunshine

In Rileyville, New Jersey, the average sunshine is 5.1h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from 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. 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.
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FAQ

What is the coldest month in Rileyville?

The coldest month is January, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 23.5°F (-4.7°C).

What is the temperature in January in Rileyville?

In Rileyville, in January, the average high-temperature is 36.5°F (2.5°C), and the average low-temperature is 23.5°F (-4.7°C).

What is the average humidity in January in Rileyville?

The average relative humidity in January in Rileyville, New Jersey, is 76%.

How many days does it rain in January in Rileyville?

In January, in Rileyville, the rain falls for 5.8 days. Throughout January, 0.47" (12mm) of precipitation is accumulated.

How many days does it snow in January in Rileyville?

In Rileyville, New Jersey, during January, snow falls for 3.7 days and regularly aggregates up to 0.47" (12mm) of snow.

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

The average length of the day in January is 9.7h.

How many hours of sunshine does Rileyville have in January?

In Rileyville, the average sunshine in January is 5.1h.

What are the months with the lowest UV index in Rileyville?

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

What is the UV index intensity in January in Rileyville?

In Rileyville, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in January
Rileyville, NJ

Average temperature in January - Rileyville, NJ
  • Average high temperature in January: 36.5°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in January: 23.5°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in January
Rileyville, NJ

Average pressure in January - Rileyville, NJ
  • Average pressure in January: 30.08"

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

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Average wind speed in January
Rileyville, NJ

Average wind speed in January - Rileyville, NJ
  • Average wind speed in January: 8.4mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Rileyville, NJ

Average humidity in January - Rileyville, NJ
  • Average humidity in January: 76%

Months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in January
Rileyville, NJ

Average rainfall in January - Rileyville, NJ
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days in January
Rileyville, NJ

Average rainfall days in January - Rileyville, NJ
  • Average rainfall days in January: 5.8 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (5.5 days).

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Average snowfall in January
Rileyville, NJ

Average snowfall in January - Rileyville, NJ
  • Average snowfall in January: 0.47"

The month with the highest snowfall is March (0.75").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Rileyville, NJ

Average snowfall days in January - Rileyville, NJ
  • Average snowfall days in January: 3.7 days

The month with the highest number of snowfall days is February (4.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Rileyville, NJ
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.1h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in January
Rileyville, NJ

Average sunshine days in January - Rileyville, NJ
  • Average sunshine days in January: 22.3 days

The month with the most sunshine days is November (22.7 days).
The month with the least sunshine days is July (13.6 days).

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Average UV index in January
Rileyville, NJ

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

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

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Average cloud cover in January
Rileyville, NJ

Average cloud cover in January - Rileyville, NJ
  • Average cloud cover in January: 44

Months with the most cloud cover are February and December (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in January
Rileyville, NJ

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

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).

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