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December Weather in Rockwell, United States

Last updated: June 24, 2025

In December, the average temperature in Rockwell, United States hovers around 9°C (48°F), with a minimum dipping as low as -6°C (21°F) and a maximum peaking at 26°C (79°F). Expect 122 mm (4.8 in) of precipitation spread over 9 days, contributing to an average humidity level of 87%. Be prepared for a mix of chilly and mild days!

December Temperature in Rockwell

In December in Rockwell, the average temperature is 9°C (48°F), with maximums reaching up to 26°C (79°F) and minimums dropping as low as -6°C (21°F). This temperature range makes it essential for travelers to pack layers to accommodate both warm days and chilly nights.

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

The chart illustrates December temperature patterns in Rockwell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockwell, December typically has an average temperature of 9°C (48°F), with highs reaching up to 26°C (79°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec434556617178818076645247
Data source: Temperature data for Rockwell 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 Rockwell

In Rockwell in December, the precipitation amount is 122 mm (4.8 in) over a span of 9 days.

December Precipitation Trends in Rockwell

The chart displays monthly precipitation patterns in Rockwell, 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 Rockwell, December typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec90153152165172117103115749175122
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rockwell

In Rockwell in December humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

December Average Humidity in Rockwell

This chart illustrates the average monthly humidity levels in Rockwell, 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 Rockwell is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rockwell

In Rockwell 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 Rockwell for better planning.

Maximum UV Index Levels in Rockwell for December

The chart shows the monthly maximum UV Index (UVI) for Rockwell 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 Rockwell typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Rockwell 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 Rockwell Compares to Other Months

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

This table compares monthly weather conditions in Rockwell, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)90 mm (3.5 inches)82%moderate
February Weather7°C (46°F)153 mm (6.0 inches)79%high
March Weather13°C (56°F)152 mm (6.0 inches)77%very high
April Weather16°C (61°F)165 mm (6.5 inches)78%very high
May Weather21°C (71°F)172 mm (6.8 inches)82%extreme
June Weather26°C (79°F)117 mm (4.6 inches)81%extreme
July Weather27°C (81°F)103 mm (4.1 inches)75%extreme
August Weather26°C (80°F)115 mm (4.5 inches)61%very high
September Weather24°C (76°F)74 mm (2.9 inches)59%very high
October Weather18°C (64°F)91 mm (3.6 inches)69%high
November Weather11°C (52°F)75 mm (3.0 inches)82%moderate
December Weather9°C (48°F)122 mm (4.8 inches)87%moderate

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