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December Weather in Sugar Grove, United States

Last updated: June 24, 2025

In December, the average temperature in Sugar Grove, United States hovers around 4°C (39°F). Temperatures can dip as low as -15°C (5°F) or rise to a pleasant 19°C (67°F). Expect 103 mm (4.1 in) of precipitation over 11 days, contributing to an average humidity level of 86%.

December Temperature in Sugar Grove

In December in Sugar Grove, the average temperature is a chilly 4°C (39°F), with maximums reaching up to 19°C (67°F) and minimums dropping as low as -15°C (5°F). This variation in temperature requires travelers to prepare for both cold and mild weather conditions.

December Weather in Sugar Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sugar Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sugar Grove, December typically has an average temperature of 4°C (39°F), with highs reaching up to 19°C (67°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec344045526167716965564239
Data source: Temperature data for Sugar Grove 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 Sugar Grove

In Sugar Grove in December, the precipitation amount is 103 mm (4.1 in) spread over 11 days.

December Precipitation Trends in Sugar Grove

The chart displays monthly precipitation patterns in Sugar Grove, 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 Sugar Grove, December typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec85126112131119111789610211669103
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sugar Grove

In Sugar Grove in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.

December Average Humidity in Sugar Grove

This chart illustrates the average monthly humidity levels in Sugar Grove, 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 Sugar Grove is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sugar Grove

In Sugar Grove 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 Sugar Grove, you can check the information here.

Maximum UV Index Levels in Sugar Grove for December

The chart shows the monthly maximum UV Index (UVI) for Sugar Grove 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 Sugar Grove typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111111010853
Data source: Sugar Grove 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 Sugar Grove Compares to Other Months

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

This table compares monthly weather conditions in Sugar Grove, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)85 mm (3.4 inches)87%moderate
February Weather4°C (40°F)126 mm (5.0 inches)87%high
March Weather7°C (45°F)112 mm (4.4 inches)86%very high
April Weather11°C (52°F)131 mm (5.2 inches)84%extreme
May Weather16°C (61°F)119 mm (4.7 inches)83%extreme
June Weather19°C (67°F)111 mm (4.4 inches)83%extreme
July Weather22°C (71°F)78 mm (3.1 inches)79%extreme
August Weather21°C (70°F)96 mm (3.8 inches)66%very high
September Weather19°C (66°F)102 mm (4.0 inches)68%very high
October Weather13°C (56°F)116 mm (4.6 inches)78%very high
November Weather6°C (43°F)69 mm (2.7 inches)89%moderate
December Weather4°C (39°F)103 mm (4.1 inches)86%moderate

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