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December Weather in Suwanee, United States

Last updated: June 24, 2025

In December, the average temperature in Suwanee, United States hovers around 9°C (48°F), with a minimum plunge to -6°C (21°F) and a maximum peak at 23°C (74°F). Expect about 138 mm (5.4 in) of precipitation spread over 11 days, contributing to a high average humidity level of 89%.

December Temperature in Suwanee

In December in Suwanee, the average temperature is 9°C (48°F). The maximum can reach 23°C (74°F) and the minimum can be as low as -6°C (21°F). Be sure to pack layers to accommodate both warm and chilly weather during your travels.

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

The chart illustrates December temperature patterns in Suwanee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Suwanee, December typically has an average temperature of 9°C (48°F), with highs reaching up to 23°C (74°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec455055627076797874655248
Data source: Temperature data for Suwanee 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 Suwanee

In Suwanee in December, the precipitation amount is 138 mm (5.4 in) distributed over 11 days.

December Precipitation Trends in Suwanee

The chart displays monthly precipitation patterns in Suwanee, 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 Suwanee, December typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10915513812312013511915311514380138
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Suwanee

In Suwanee in December humidity is 89%. With an average temperature of 9°C (48°F), this humidity feels like a chill that lingers in the air, wrapping around you like a damp blanket, making outdoor activities challenging and encouraging a cozy retreat indoors.

December Average Humidity in Suwanee

This chart illustrates the average monthly humidity levels in Suwanee, 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 Suwanee is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Suwanee

In Suwanee 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 Suwanee for better planning.

Maximum UV Index Levels in Suwanee for December

The chart shows the monthly maximum UV Index (UVI) for Suwanee 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 Suwanee typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47811111111109864
Data source: Suwanee 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 Suwanee Compares to Other Months

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

This table compares monthly weather conditions in Suwanee, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)109 mm (4.3 inches)86%moderate
February Weather10°C (51°F)155 mm (6.1 inches)84%high
March Weather13°C (56°F)138 mm (5.4 inches)83%very high
April Weather16°C (62°F)123 mm (4.8 inches)81%extreme
May Weather21°C (71°F)120 mm (4.7 inches)81%extreme
June Weather24°C (76°F)135 mm (5.3 inches)81%extreme
July Weather26°C (79°F)119 mm (4.7 inches)83%extreme
August Weather26°C (78°F)153 mm (6.0 inches)81%very high
September Weather23°C (74°F)115 mm (4.5 inches)82%very high
October Weather18°C (65°F)143 mm (5.6 inches)78%very high
November Weather11°C (52°F)80 mm (3.2 inches)86%high
December Weather9°C (48°F)138 mm (5.4 inches)89%moderate

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