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
The lowest temperatures are recorded in January, with averages reaching a high of 39.7°F (4.3°C) and a low of 29.7°F (-1.3°C).Humidity
January, March, April and November, with an average relative humidity of 74%, are the least humid months.Rainfall
January and September are months with the least rain in New Gretna when the rain falls for 6.7 days and typically aggregates up to 0.67" (17mm) of rain.Snowfall
Months with snowfall are January through March, November and December. The month with the most snowfall is January, when snow falls for 3.7 days and typically aggregates up to 0.98" (25mm) of snow.Daylight
In January, the average length of the day in New Gretna is 9h and 45min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:15 pm EST.
Sunshine
In New Gretna, the average sunshine in January is 5.3h.UV index
The months with the lowest UV index in New Gretna, New Jersey, are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What month is the coldest in New Gretna?
How cold is it in New Gretna in January?
What is the least humid month in New Gretna?
What is the average humidity in January in New Gretna?
What is the driest month in New Gretna?
How much does it rain in New Gretna in January?
When does it snow the most in New Gretna?
How many days does it snow in January in New Gretna?
What is the average length of the day in January in New Gretna?
When is the sunrise / sunset in January in New Gretna?
How many hours of sunshine does New Gretna have in January?
When is the lowest UV index in New Gretna?
How high is the UV index in January in New Gretna?
Average temperature in January
New Gretna, NJ
- Average high temperature in January: 39.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in January: 29.7°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in January
New Gretna, NJ
- Average pressure in January: 30.07"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
New Gretna, NJ
- Average wind speed in January: 11.7mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).
Average humidity in January
New Gretna, NJ
- Average humidity in January: 74%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in January
New Gretna, NJ
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is July (1.18").
The driest months (with the least rainfall) are January and September (0.67").
Average rainfall days in January
New Gretna, NJ
- Average rainfall days in January: 6.7 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in January
New Gretna, NJ
- Average snowfall in January: 0.98"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
New Gretna, NJ
- Average snowfall days in January: 3.7 days
The month with the highest number of snowfall days is January (3.7 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
New Gretna, 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 24min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in January
New Gretna, NJ
- Average sunshine days in January: 21.3 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in January
New Gretna, 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
New Gretna, NJ
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in January
New Gretna, 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).
New Gretna, New Jersey, USA
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