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December Weather in Delphi, United States

Last updated: June 24, 2025

In Delphi, United States, the average temperature in December hovers around 2°C (36°F). Expect a chilly climate with a minimum dipping to -24°C (-11°F) and a maximum reaching up to 18°C (64°F). During this month, you'll likely encounter precipitation totaling 62 mm (2.4 in) over about 9 days, accompanied by a high average humidity of 86%.

December Temperature in Delphi

In December in Delphi, the average temperature is 2°C (36°F). Maximums can reach 18°C (64°F), while minimums can drop as low as -24°C (-11°F). Be sure to pack layers to stay comfortable during your travels!

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

The chart illustrates December temperature patterns in Delphi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delphi, December typically has an average temperature of 2°C (36°F), with highs reaching up to 18°C (64°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec293142516474777470574135
Data source: Temperature data for Delphi 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 Delphi

In Delphi in December, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.

December Precipitation Trends in Delphi

The chart displays monthly precipitation patterns in Delphi, 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 Delphi, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec747710393148908993601067462
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Delphi

In Delphi in December, humidity is 86%. With an average temperature of 2°C (36°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration uncomfortable and dampening any enthusiasm for travel.

December Average Humidity in Delphi

This chart illustrates the average monthly humidity levels in Delphi, 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 Delphi is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Delphi

In Delphi in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Delphi, you can visit Hourly UV Index in Delphi.

Maximum UV Index Levels in Delphi for December

The chart shows the monthly maximum UV Index (UVI) for Delphi 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 Delphi typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Delphi 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 Delphi Compares to Other Months

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

This table compares monthly weather conditions in Delphi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)74 mm (2.9 inches)85%moderate
February Weather0°C (31°F)77 mm (3.0 inches)85%moderate
March Weather5°C (42°F)103 mm (4.0 inches)86%high
April Weather11°C (52°F)93 mm (3.7 inches)87%very high
May Weather18°C (64°F)148 mm (5.8 inches)81%very high
June Weather23°C (74°F)90 mm (3.6 inches)82%very high
July Weather25°C (77°F)89 mm (3.5 inches)81%very high
August Weather23°C (74°F)93 mm (3.7 inches)79%very high
September Weather21°C (70°F)60 mm (2.4 inches)78%very high
October Weather14°C (58°F)106 mm (4.2 inches)81%high
November Weather5°C (42°F)74 mm (2.9 inches)89%moderate
December Weather2°C (36°F)62 mm (2.4 inches)86%low

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