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December Weather in Northlake, United States

Last updated: June 24, 2025

In Northlake, United States, the average temperature in December hovers around 9°C (48°F). Expect a minimum chill of -6°C (21°F) and a warm maximum of 24°C (76°F). Rainfall is notable, with 131 mm (5.2 in) of precipitation spread over about 10 days. The air feels quite humid too, with an average humidity of 88%, making it a uniquely atmospheric experience.

December Temperature in Northlake

In December, in Northlake, the average temperature is 9°C (48°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as -6°C (21°F). This variability in temperature makes Northlake a destination where travelers should be prepared for a range of weather conditions.

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

The chart illustrates December temperature patterns in Northlake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northlake, December typically has an average temperature of 9°C (48°F), with highs reaching up to 24°C (76°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec455055627177807975665248
Data source: Temperature data for Northlake 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 Northlake

In Northlake in December, the precipitation amount is 131 mm (5.2 in) over a duration of 10 days.

December Precipitation Trends in Northlake

The chart displays monthly precipitation patterns in Northlake, 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 Northlake, December typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081451111231401039812512313294132
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Northlake

In Northlake in December, humidity is 88%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill settling into your bones, making outdoor exploration feel heavy and oppressive.

December Average Humidity in Northlake

This chart illustrates the average monthly humidity levels in Northlake, 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 Northlake is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Northlake

In Northlake in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Northlake for better planning.

Maximum UV Index Levels in Northlake for December

The chart shows the monthly maximum UV Index (UVI) for Northlake 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 Northlake typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Northlake 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 Northlake Compares to Other Months

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

This table compares monthly weather conditions in Northlake, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)108 mm (4.2 inches)86%moderate
February Weather10°C (50°F)145 mm (5.7 inches)86%high
March Weather13°C (55°F)111 mm (4.4 inches)86%very high
April Weather17°C (62°F)123 mm (4.9 inches)82%very high
May Weather21°C (71°F)140 mm (5.5 inches)85%extreme
June Weather25°C (77°F)102 mm (4.0 inches)85%extreme
July Weather27°C (80°F)98 mm (3.9 inches)83%extreme
August Weather26°C (79°F)125 mm (4.9 inches)76%very high
September Weather24°C (75°F)123 mm (4.9 inches)76%very high
October Weather19°C (66°F)132 mm (5.2 inches)80%very high
November Weather11°C (52°F)94 mm (3.7 inches)88%high
December Weather9°C (48°F)131 mm (5.2 inches)88%moderate

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