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
In Mamaroneck, the month of January is known for its lowest average temperatures, reaching a high of 36.3°F (2.4°C) and a low of 25.9°F (-3.4°C).Humidity
In Mamaroneck, the average relative humidity in January is 73%.Rainfall
January and February are months with the least rain when the rain falls for 7.3 days and typically aggregates up to 1.69" (43mm) of rain.Snowfall
January through April, November and December are months with snowfall in Mamaroneck, New York. In Mamaroneck, in January, during 5.3 snowfall days, 1.81" (46mm) of snow is typically accumulated. Throughout the year, there are 18.1 snowfall days, and 8.46" (215mm) of snow is accumulated.Ocean temperature
In January, the average ocean temperature is 42.4°F (5.8°C).Note: Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
The average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:19 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:10 pm EST.
Sunshine
The average sunshine in January is 5.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Boost your sun resistance with garments that are densely woven yet spacious. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Mamaroneck?
How cold is it in Mamaroneck in January?
What is the average humidity in January in Mamaroneck?
What is the driest month in Mamaroneck?
How many days does it rain in January in Mamaroneck?
How much does it snow in Mamaroneck in January?
What is the ocean temperature in January in Mamaroneck?
How many hours of daylight does Mamaroneck have in January?
What time are sunrise and sunset in January in Mamaroneck?
How many hours of sunshine does Mamaroneck have in January?
When is the lowest UV index in Mamaroneck?
How high is the UV index in January in Mamaroneck?
Average temperature in January
Mamaroneck, NY
- Average high temperature in January: 36.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in January: 25.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in January
Mamaroneck, NY
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Mamaroneck, NY
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in January
Mamaroneck, NY
- Average humidity in January: 73%
The months with the highest relative humidity are February and December (75%).
The month with the lowest relative humidity is August (70%).
Average rainfall in January
Mamaroneck, NY
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are January and February (1.69").
Average rainfall days in January
Mamaroneck, NY
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Mamaroneck, NY
- Average snowfall in January: 1.81"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mamaroneck, NY
- Average snowfall days in January: 5.3 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Mamaroneck, NY
- Average sea temperature in January: 42.4°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in January /
Average sunshine in January
Mamaroneck, NY
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Mamaroneck, NY
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (12 days).
Average UV index in January
Mamaroneck, NY
- 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, March, November and December (UV index 2).
Average cloud cover in January
Mamaroneck, NY
- Average cloud cover in January: 43
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Mamaroneck, NY
- 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).
Mamaroneck, New York, USA
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