nomadseason

December Weather in Carnegie, United States

Last updated: June 24, 2025

In Carnegie, United States, the average temperature in December hovers around 7°C (44°F). However, temperatures can swing widely, with a minimum as low as -9°C (17°F) and a maximum peaking at 29°C (84°F). Expect about 31 mm (1.2 in) of precipitation over the course of 3 days, and feel the air's notable average humidity of 84%.

December Temperature in Carnegie

In December in Carnegie, the average temperature is 7°C (44°F), with maximums reaching 29°C (84°F) and minimums dropping as low as -9°C (17°F). It’s advisable to pack for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Carnegie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carnegie, December typically has an average temperature of 7°C (44°F), with highs reaching up to 29°C (84°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec394154607080848275625044
Data source: Temperature data for Carnegie generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Carnegie

In Carnegie in December, the precipitation amount is 31 mm (1.2 in) over the course of 3 days.

December Precipitation Trends in Carnegie

The chart displays monthly precipitation patterns in Carnegie, 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 Carnegie, December typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec39356910114263374792872231
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Carnegie

In Carnegie in December humidity is 84%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making it uncomfortable for traveling and requiring extra layers to stay warm and dry.

December Average Humidity in Carnegie

This chart illustrates the average monthly humidity levels in Carnegie, 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 Carnegie is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Carnegie

In Carnegie 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 Carnegie for better planning.

Maximum UV Index Levels in Carnegie for December

The chart shows the monthly maximum UV Index (UVI) for Carnegie 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 Carnegie typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111112119754
Data source: Carnegie 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 Carnegie Compares to Other Months

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

This table compares monthly weather conditions in Carnegie, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)39 mm (1.5 inches)76%moderate
February Weather5°C (41°F)35 mm (1.4 inches)76%high
March Weather12°C (54°F)69 mm (2.7 inches)70%very high
April Weather16°C (60°F)101 mm (4.0 inches)72%very high
May Weather21°C (70°F)142 mm (5.6 inches)82%extreme
June Weather26°C (80°F)63 mm (2.5 inches)82%extreme
July Weather29°C (84°F)37 mm (1.4 inches)80%extreme
August Weather28°C (82°F)47 mm (1.8 inches)72%extreme
September Weather24°C (76°F)92 mm (3.6 inches)64%very high
October Weather17°C (62°F)87 mm (3.4 inches)71%high
November Weather10°C (50°F)22 mm (0.9 inches)81%moderate
December Weather7°C (44°F)31 mm (1.2 inches)84%moderate

Compare Carnegie's Climate with Cities Worldwide