Normal weather for Iselin in December
It's cold in December in Iselin with an average temperature of 5°C. Temperatures this month range from a low of 0°C to a high of 9°C. At night, you can expect temperatures between -7°C and 2°C.
In December, there is an average of 101 mm of precipitation, spread over 13 days. Of the total precipitation, about 11 cm falls as snow in December. The wind speed is around 4 Bft, mostly coming from the Southwest.
Iselin in December |
New York | ||
|---|---|---|---|
 Average Temperature |
5°C | 9°C | |
 High Temp |
9°C | 12°C | |
| Low Temp |
0°C | 4°C | |
 Total Precipitation |
101 mm | 133 mm | |
| Rainy Days |
13 days | 17 days | |
 Total Snowfall |
11 cm | 9,7 cm | |
| Snowy Days |
5 days | 3 days | |
Start of December
The month of December starts in Iselin with cold temps, averaging around 6°C during the day and nights around 0°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. During the day, wear a thick jacket, sweater, and long pants. For the evening and morning, we recommend a heavy winter coat, sweater, long pants, beanie, and gloves.
Mid December
By mid-December, daytime temps drop to around 4°C, with nights around -3°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Wear a heavy winter coat, sweater, long pants, beanie, and gloves.
End of December
By the end of December, the average daytime temperature in Iselin is around 8°C, while nighttime temps are about 0°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended. During the day, wear a thick jacket, sweater, and long pants. For the evening and morning, we recommend a heavy winter coat, sweater, long pants, beanie, and gloves.
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UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is December a good time to visit Iselin?
Looking for sun? December isn’t a good month to be in Iselin. There’s too much chance of rain this month.
Temperature records for Iselin in December
Check out the climate of Iselin for all months and discover the best travel time
November
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Daily Temperature in December in Iselin
This chart shows the average daily high and low temperatures in December for Iselin, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Iselin
The chart below shows the average daily precipitation in December for Iselin, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed 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 it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 13 days of precipitation in Iselin.
Daily Snowfall in December in Iselin
This chart shows the average daily snowfall in December in Iselin, measured in centimeters. 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 December.
Daily UV Index in December in Iselin
This chart shows the average daily UV index in December in Iselin, 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 December in Iselin Over the Years
This chart shows the average temperature in December in Iselin, measured in degrees Celsius, over the past few years.
Total Precipitation in December in Iselin Over the Years
This chart shows the average precipitation in December in Iselin, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in December in Iselin per year
This chart shows the average snowfall in December in Iselin, measured in centimeters, over the past few years.
Daily Climate in December for Iselin
Click on any day in December to get detailed info about the usual weather on that day in Iselin. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Iselin
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Average Weather in Iselin by Month
Click on a month below to see detailed weather info for Iselin. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
