January Weather in Newtown, United States

Last updated: June 24, 2025

In January, the average temperature in Newtown, United States hovers around 1°C (34°F). Expect a chilly climate with minimum lows plummeting to -21°C (-6°F) and occasional highs reaching up to 21°C (69°F). During this month, rainfall measures approximately 83 mm (3.3 in), typically spread over 10 days, creating a rather damp atmosphere with an average humidity of 88%.

January Temperature in Newtown

In January in Newtown, the average temperature is 1°C (34°F). Maximum temperatures can reach 21°C (69°F), while minimums can dip as low as -21°C (-6°F). Be sure to pack layers to stay comfortable during your travels!

January Weather in Newtown: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Newtown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newtown, January typically has an average temperature of 1°C (34°F), with highs reaching up to 21°C (69°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec343745546673777570594439
Data source: Temperature data for Newtown generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Newtown

In Newtown in January, the total precipitation amount is 83 mm (3.3 in) over a span of 10 days.

January Precipitation Trends in Newtown

The chart displays monthly precipitation patterns in Newtown, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Newtown, January typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8311613913413614911789959998119
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Newtown

In Newtown in January humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.

January Average Humidity in Newtown

This chart illustrates the average monthly humidity levels in Newtown, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Newtown is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Newtown

In Newtown in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Newtown, you can check the information here.

Maximum UV Index Levels in Newtown for January

The chart shows the monthly maximum UV Index (UVI) for Newtown in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Newtown typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Newtown January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Newtown Compares to Other Months

Weather in Newtown varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Newtown, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Newtown, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)83 mm (3.3 inches)88%moderate
February Weather3°C (38°F)116 mm (4.6 inches)88%moderate
March Weather7°C (46°F)139 mm (5.5 inches)87%high
April Weather12°C (55°F)134 mm (5.3 inches)85%very high
May Weather19°C (66°F)136 mm (5.4 inches)81%very high
June Weather23°C (73°F)149 mm (5.9 inches)82%very high
July Weather25°C (77°F)117 mm (4.6 inches)81%very high
August Weather24°C (75°F)89 mm (3.5 inches)73%very high
September Weather21°C (70°F)95 mm (3.7 inches)73%very high
October Weather15°C (59°F)99 mm (3.9 inches)78%high
November Weather7°C (44°F)98 mm (3.9 inches)89%moderate
December Weather4°C (39°F)119 mm (4.7 inches)87%moderate

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