Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January stands out as Penns Grove's coldest month, with an average high-temperature of 37.9°F (3.3°C) and a low-temperature of 26.2°F (-3.2°C).Humidity
In January, the average relative humidity is 74%.Rainfall
In Penns Grove, in January, during 9.5 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Penns Grove, during the entire year, the rain falls for 150.6 days and collects up to 26.46" (672mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In January, it is snowing for 5.3 days. Throughout January, 1.57" (40mm) of snow is accumulated. Throughout the year, there are 16.2 snowfall days, and 6.93" (176mm) of snow is accumulated.Ocean temperature
In Penns Grove, in January, the average water temperature is 41.9°F (5.5°C).Note: It is advised against swimming in 41.9°F (5.5°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In January, the average length of the day is 9h and 44min.On the first day of January, sunrise is at 7:22 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:19 pm EST.
Sunshine
In January, the average sunshine 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. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. 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. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the average humidity in January in Penns Grove?
How much does it rain in January?
How many days does it snow in January?
What is the ocean temperature in January?
How many hours of daylight does Penns Grove have in January?
When are sunrise and sunset in January in Penns Grove?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Penns Grove, NJ
- Average high temperature in January: 37.9°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in January: 26.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in January
Penns Grove, NJ
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Penns Grove, NJ
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Penns Grove, 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 (72%).
Average rainfall in January
Penns Grove, NJ
- Average rainfall in January: 1.77"
The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in January
Penns Grove, NJ
- Average rainfall days in January: 9.5 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in January
Penns Grove, NJ
- Average snowfall in January: 1.57"
The month with the highest snowfall is March (2.2").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Penns Grove, NJ
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in January
Penns Grove, NJ
- Average sea temperature in January: 41.8°F
The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in January /
Average sunshine in January
Penns Grove, NJ
- Average daylight in January: 9h and 4min
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
Penns Grove, NJ
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in January
Penns Grove, 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, November and December (UV index 2).
Average cloud cover in January
Penns Grove, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Penns Grove, 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).
Penns Grove, New Jersey, USA
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