January weather forecast and climate
Monroeville, NJ

January, like December, in Monroeville, New Jersey, is another cold winter month, with average temperature varying between 26.8°F (-2.9°C) and 38.1°F (3.4°C).

Temperature

The coldest month is January, with an average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 26.8°F (-2.9°C).

Humidity

In Monroeville, the average relative humidity is 74%.

Rainfall

In Monroeville, in January, during 8.8 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 154.9 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In January, in Monroeville, it is snowing for 5.5 days. Throughout January, 2.4" (61mm) of snow is accumulated. Throughout the year, in Monroeville, there are 17.8 snowfall days, and 10.28" (261mm) of snow is accumulated.

Daylight

In Monroeville, New Jersey, the average length of the day is 9.7h.

Sunshine

The average sunshine in January is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Monroeville. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
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. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Monroeville?

With an average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 26.8°F (-2.9°C), January is the coldest month in Monroeville, New Jersey.

What is the temperature in January in Monroeville?

The average high-temperature, in January, is 38.1°F (3.4°C), while the average low-temperature is 26.8°F (-2.9°C).

What is the average humidity in January in Monroeville?

In January, the average relative humidity is 74%.

How many days does it rain in January in Monroeville?

In Monroeville, during January, the rain falls for 8.8 days and regularly aggregates up to 2.09" (53mm) of precipitation.

How many days does it snow in January in Monroeville?

In Monroeville, New Jersey, during January, snow falls for 5.5 days and regularly aggregates up to 2.4" (61mm) of snow.

How many hours of daylight does Monroeville have in January?

In January, the average length of the day is 9.7h.

How many hours of sunshine does Monroeville have in January?

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

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

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

What is the UV index intensity in January in Monroeville?

The average daily maximum UV index in January in Monroeville is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Monroeville, NJ
  • Average high temperature in January: 3.4°C

The warmest month (with the highest average high temperature) is July (29.6°C).
The month with the lowest average high temperature is January (3.4°C).

  • Average low temperature in January: -2.9°C

The month with the highest average low temperature is July (20.3°C).
The coldest month (with the lowest average low temperature) is January (-2.9°C).

Average pressure in January - Monroeville, NJ
  • Average pressure in January: 1018.8mbar

The month with the highest atmospheric pressure is November (1020mbar).
The month with the lowest atmospheric pressure is June (1013.8mbar).

Average wind speed in January - Monroeville, NJ
  • Average wind speed in January: 13.5km/h

The windiest month (with the highest average wind speed) is April (14km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).

Average humidity in January - Monroeville, NJ
  • Average humidity in January: 74%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).

Average rainfall in January - Monroeville, NJ
  • Average rainfall in January: 53mm

The wettest month (with the highest rainfall) is December (85mm).
The driest month (with the least rainfall) is September (44mm).

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

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in January - Monroeville, NJ
  • Average snowfall in January: 61mm

The month with the highest snowfall is March (90mm).
Months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in January - Monroeville, NJ
  • Average snowfall days in January: 5.5 days

The month with the highest number of snowfall days is January (5.5 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 5.1h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in January - Monroeville, NJ
  • Average sunshine days in January: 18.2 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in January - Monroeville, 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, November and December (UV index 2).

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

Months with the most cloud cover are February and March (Cloud cover 46).
Months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in January - Monroeville, NJ
  • Average visibility in January: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).