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December Weather in Hertford, United States

Last updated: June 24, 2025

In December, the average temperature in Hertford, United States is a cool 9°C (48°F). While it can dip to a brisk -7°C (20°F), temperatures can also soar to a pleasant 24°C (75°F). Expect 98 mm (3.9 in) of precipitation spread over approximately 10 days, contributing to an average humidity level of 84%. Stay prepared for varied weather!

December Temperature in Hertford

In December in Hertford, the average temperature is 9°C (48°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -7°C (20°F). Given these variations, travelers should be prepared for a wide range of weather conditions.

December Weather in Hertford: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Hertford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hertford, December typically has an average temperature of 9°C (48°F), with highs reaching up to 24°C (75°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec434952617076807975665348
Data source: Temperature data for Hertford 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.

December Precipitation in Hertford

In Hertford in December, the total precipitation amount is 98 mm (3.9 in) recorded over a span of 10 days.

December Precipitation Trends in Hertford

The chart displays monthly precipitation patterns in Hertford, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Hertford, December typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec93927194129137142188130828498
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hertford

In Hertford in December, humidity is 84%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that envelops you, making it essential to dress in layers and stay active, as the moisture in the air can quickly lead to discomfort while traveling.

December Average Humidity in Hertford

This chart illustrates the average monthly humidity levels in Hertford, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Hertford is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hertford

In Hertford in December, 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 Hertford, you can check the information here.

Maximum UV Index Levels in Hertford for December

The chart shows the monthly maximum UV Index (UVI) for Hertford in December, 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 December, the maximum UV index in Hertford typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111011109853
Data source: Hertford December 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 December Weather in Hertford Compares to Other Months

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

This table compares monthly weather conditions in Hertford, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)93 mm (3.7 inches)84%moderate
February Weather9°C (49°F)92 mm (3.6 inches)83%high
March Weather11°C (52°F)71 mm (2.8 inches)82%very high
April Weather16°C (62°F)94 mm (3.7 inches)81%very high
May Weather21°C (70°F)129 mm (5.1 inches)80%extreme
June Weather25°C (77°F)137 mm (5.4 inches)82%very high
July Weather27°C (80°F)142 mm (5.6 inches)81%extreme
August Weather26°C (79°F)188 mm (7.4 inches)81%very high
September Weather24°C (75°F)130 mm (5.1 inches)78%very high
October Weather19°C (66°F)82 mm (3.2 inches)80%very high
November Weather12°C (53°F)83 mm (3.3 inches)84%moderate
December Weather9°C (48°F)98 mm (3.9 inches)84%moderate

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