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December Weather in Riverview, United States

Last updated: June 24, 2025

In December, the average temperature in Riverview, United States hovers around 5°C (40°F). Temperatures can swing from a chilling low of -15°C (5°F) to a pleasant high of 25°C (77°F). Expect about 41 mm (1.6 in) of precipitation spread over 6 days and a notably high average humidity of 86%, making for a crisp yet refreshing atmosphere.

December Temperature in Riverview

In December in Riverview, the average temperature is 5°C (40°F). Maximums can reach 25°C (77°F) and minimums can be as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Riverview, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverview, December typically has an average temperature of 5°C (40°F), with highs reaching up to 25°C (77°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec343648556676807773594640
Data source: Temperature data for Riverview 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 Riverview

In Riverview in December, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.

December Precipitation Trends in Riverview

The chart displays monthly precipitation patterns in Riverview, 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 Riverview, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec6861121123169101109101591115741
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Riverview

In Riverview in December humidity is 86%. With an average temperature of 5°C (40°F), this humidity feels like wrapping yourself in a damp blanket—uncomfortably heavy and chilly, making it difficult to enjoy outdoor activities without the constant chill seeping in.

December Average Humidity in Riverview

This chart illustrates the average monthly humidity levels in Riverview, 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 Riverview is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Riverview

In Riverview 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 Riverview, you can check the information here.

Maximum UV Index Levels in Riverview for December

The chart shows the monthly maximum UV Index (UVI) for Riverview 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 Riverview typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101111109753
Data source: Riverview 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 Riverview Compares to Other Months

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

This table compares monthly weather conditions in Riverview, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)68 mm (2.7 inches)80%moderate
February Weather2°C (36°F)61 mm (2.4 inches)78%moderate
March Weather9°C (48°F)121 mm (4.8 inches)75%high
April Weather13°C (55°F)123 mm (4.8 inches)77%very high
May Weather19°C (66°F)169 mm (6.7 inches)82%very high
June Weather25°C (77°F)101 mm (4.0 inches)83%extreme
July Weather26°C (80°F)109 mm (4.3 inches)81%extreme
August Weather25°C (77°F)101 mm (4.0 inches)78%very high
September Weather23°C (73°F)59 mm (2.3 inches)72%very high
October Weather15°C (59°F)111 mm (4.4 inches)72%high
November Weather8°C (46°F)57 mm (2.2 inches)84%moderate
December Weather5°C (40°F)41 mm (1.6 inches)86%moderate

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