The weather in January in New Castle

It's cold in January in New Castle with an average temperature of 2°C. Temperatures this month range from a low of -2°C to a high of 8°C. At night, you can expect temperatures between -10°C and -3°C.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for New Castle, New Hampshire. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 20°C in 2020, New Castle reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was -15°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of -22°C to a highest value of 5°C.

Precipitation and snowfall

In January, there is an average of 66 mm of precipitation, spread over 10 days. Of the total precipitation, about 30 cm falls as snow in January. The wind speed is around 4 Bft, mostly coming from the Southwest.

Daily weather in January for New Castle

Click on any day in January to get detailed info about the usual weather on that day in New Castle. Check out the historical temperatures and precipitation over the past 10 years on this day.

January weather comparison

  New Castle New York
Average temperature 2°C 5°C
Max. temperature 8°C 11°C
Min. temperature -10°C -5°C
Total precipitation 66 mm 97 mm
Rainy days 10 days 12 days
Total snowfall 30 cm 16 cm
Snowy days 13 days 8 days

Start of January

The month of January starts in New Castle with really cold temps, averaging around 2°C during the day and nights dipping to about -6°C.

Mid January

By mid-January, daytime temps rise to around 3°C, with nights around -5°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.

End of January

By the end of January, the average daytime temperature in New Castle is around 2°C, while nighttime temps are about -6°C. A shower might pop up, but overall, the weather will be dry and sunny.

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UV index

The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.

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Temperature charts

These charts show the average temperatures in January in New Castle, New Hampshire. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in January in New Castle

Temperature in January in New Castle over the years

Precipitation charts

These charts show the average amount of precipitation in January in New Castle, New Hampshire. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in January in New Castle

Total precipitation in January in New Castle over the years

Daily Snowfall in January in New Castle

Snowfall in January in New Castle per year

Daily UV index in January in New Castle

This chart shows the average daily UV index in January in New Castle, 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.

Weather experiences in January in New Castle

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Average weather in New Castle by month

Click on a month below to see detailed weather info for New Castle. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.