Temperatures in January
It's cold in January in Long Island with an average temperature of 6°C. Temperatures this month range from a low of 3°C to a high of 8°C. At night, you can expect temperatures between -1°C and 4°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Long Island in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Long Island with cold temperatures, averaging around 5°C during the day and nights close to 1°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Mid-January
By mid-January, the average daytime temperature rises to around 7°C, with nights close to 3°C. The chance of precipitation is high during this period.
End of January
By the end of January, the average daytime temperature in Long Island will be around 7°C, with nights close to 3°C. There’s a significant chance of many days with precipitation.
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Precipitation in January
In January, there is an average of 222 mm of precipitation, spread over 20 days. Of the total precipitation, about 16 cm falls as snow in January. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance this month is 64% per day.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Long Island. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Long Island in January |
London | ||
|---|---|---|---|
 Average Temperature |
6°C | 8°C | |
 High Temp |
8°C | 9°C | |
| Low Temp |
3°C | 6°C | |
 Total Precipitation |
222 mm | 58 mm | |
| Rainy Days |
20 days | 9 days | |
 Total Snowfall |
16 cm | 0,8 cm | |
| Snowy Days |
9 days | 1 day | |
December
UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Is January a good time to visit Long Island?
After some sun? Then January isn’t the best time to be in Long Island. There’s too much chance of rain this month.
Temperature records for Long Island in January
With 18°C, Long Island hit the highest temperature in the last 10 years in January 2018. The lowest daytime temperature in this month was -9°C in 2020. The extreme night temperatures ranged from a low of -14°C to a high of 10°C.
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Daily Temperature in January in Long Island
This chart shows the average daily temperatures, both day and night, for each day in January in Long Island, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Long Island
The chart below shows the average daily precipitation in January for Long Island, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 20 days of rain in Long Island.
Daily Snowfall in January in Long Island
This chart shows the average daily snowfall in January in Long Island, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in January.
Daily UV Index in January in Long Island
This chart shows the average daily UV index in January in Long Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Long Island Over the Years
This chart shows the average temperature in January in Long Island, measured in degrees Celsius, over the past years.
Total Precipitation in January in Long Island Over the Years
This chart shows the average precipitation in January in Long Island, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in January in Long Island per year
This chart shows the average snowfall in January in Long Island, measured in centimetres, over the past years.
Daily climate in January for Long Island
Click on a specific day in January for detailed info on the typical weather on that day in Long Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Long Island
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Average Weather in Long Island by Month
Click on a month below to see detailed weather info for Long Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Long Island for all months at once
