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 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 is the month when South Dennis experiences its coldest temperatures, averaging a high of 40.1°F (4.5°C) and a low of 31.3°F (-0.4°C).Humidity
In South Dennis, New Jersey, the average relative humidity in January is 74%.Rainfall
January is the month with the least rainfall in South Dennis. Rain falls for 7 days and accumulates 0.67" (17mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in South Dennis. January is the month with the most snowfall in South Dennis. Snow falls for 4.7 days and accumulates 0.59" (15mm) of snow.Daylight
In South Dennis, the average length of the day in January is 9h and 47min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:46 pm. On the last day of January, in South Dennis, New Jersey, sunrise is at 7:07 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in January is 5.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in South Dennis. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 in January translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What part of the year is the coldest in South Dennis?
How cold is it in South Dennis in January?
What is the average humidity in January in South Dennis?
What is the driest month in South Dennis?
How much does it rain in South Dennis in January?
When does it snow the most in South Dennis?
How much does it snow in South Dennis in January?
What is the average length of the day in January in South Dennis?
When are sunrise and sunset in January in South Dennis?
How long on average sun shines in January in South Dennis?
What are the months with the lowest UV index in South Dennis?
How high is the UV index in January in South Dennis?
Average temperature in January
South Dennis, NJ
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in January: 31.3°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in January
South Dennis, NJ
- Average pressure in January: 30.08"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
South Dennis, NJ
- Average wind speed in January: 11.9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in January
South Dennis, NJ
- Average humidity in January: 74%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in January
South Dennis, NJ
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in January
South Dennis, NJ
- Average rainfall days in January: 7 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).
Average snowfall in January
South Dennis, NJ
- Average snowfall in January: 0.59"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
South Dennis, NJ
- Average snowfall days in January: 4.7 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
South Dennis, 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 30min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in January
South Dennis, NJ
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in January
South Dennis, NJ
- Average UV index in January: 2
The months with the highest UV index are 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
South Dennis, NJ
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in January
South Dennis, 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).
South Dennis, New Jersey, USA
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