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December Weather in Fairmount, United States

Last updated: June 24, 2025

In December, the average temperature in Fairmount, United States hovers around 8°C (47°F). You can expect a minimum drop to -7°C (20°F) and a pleasant peak at 23°C (74°F). This month also sees 147 mm (5.8 in) of precipitation over approximately 12 days, coupled with a high average humidity of 88%. Prepare for varying weather conditions and pack accordingly!

December Temperature in Fairmount

In December in Fairmount, the average temperature is 8°C (47°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -7°C (20°F). This range makes it essential for travelers to pack layers to adapt to the varying weather conditions.

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

The chart illustrates December temperature patterns in Fairmount, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairmount, December typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (74°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec444955617076797874655147
Data source: Temperature data for Fairmount 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 Fairmount

In Fairmount in December, the precipitation amount is 147 mm (5.8 in) over a span of 12 days.

December Precipitation Trends in Fairmount

The chart displays monthly precipitation patterns in Fairmount, 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 Fairmount, December typically receives around 147 mm (5.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec12218816014110711910713110112990147
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fairmount

In Fairmount in December, humidity is 88%. With an average temperature of 8°C (47°F), this humidity feels like a thick, damp blanket wrapping around you, making even short walks feel heavy and uninviting for travel.

December Average Humidity in Fairmount

This chart illustrates the average monthly humidity levels in Fairmount, 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 Fairmount is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fairmount

In Fairmount 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 Fairmount for better planning.

Maximum UV Index Levels in Fairmount for December

The chart shows the monthly maximum UV Index (UVI) for Fairmount 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 Fairmount typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111110109764
Data source: Fairmount 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 Fairmount Compares to Other Months

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

This table compares monthly weather conditions in Fairmount, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)122 mm (4.8 inches)86%moderate
February Weather10°C (50°F)188 mm (7.4 inches)86%high
March Weather13°C (55°F)160 mm (6.3 inches)86%very high
April Weather16°C (62°F)141 mm (5.5 inches)82%very high
May Weather21°C (71°F)107 mm (4.2 inches)85%extreme
June Weather24°C (76°F)119 mm (4.7 inches)85%extreme
July Weather26°C (79°F)107 mm (4.2 inches)83%very high
August Weather25°C (78°F)130 mm (5.1 inches)76%very high
September Weather23°C (75°F)101 mm (4.0 inches)76%very high
October Weather18°C (65°F)129 mm (5.1 inches)80%high
November Weather11°C (52°F)90 mm (3.6 inches)88%high
December Weather8°C (47°F)147 mm (5.8 inches)88%moderate

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