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December Weather in Fallon, United States

Last updated: June 24, 2025

In Fallon, United States, the average temperature in December hovers around 2°C (37°F). Expect to see a minimum of -12°C (10°F) and a maximum of 17°C (63°F), ensuring a chilly yet varied climate. During this month, precipitation totals 24 mm (0.9 in) over approximately 5 days, accompanied by an average humidity of 82%, creating a distinctly brisk atmosphere.

December Temperature in Fallon

In December in Fallon, the average temperature is 2°C (37°F), with daily maximums reaching up to 17°C (63°F) and minimums dropping as low as -12°C (10°F). Be prepared for a wide range of temperatures if you're traveling during this time!

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

The chart illustrates December temperature patterns in Fallon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fallon, December typically has an average temperature of 2°C (37°F), with highs reaching up to 17°C (63°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec404248576476858372554536
Data source: Temperature data for Fallon 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 Fallon

In Fallon in December, the precipitation amount is 24 mm (0.9 in) over the course of 5 days.

December Precipitation Trends in Fallon

The chart displays monthly precipitation patterns in Fallon, 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 Fallon, December typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec29272912174223161424
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fallon

In Fallon in December, humidity is 82%. With an average temperature of 2°C (37°F), this humidity feels like an icy blanket wrapping around you, making outdoor exploration challenging and urging travelers to seek warmer, sheltered spaces.

December Average Humidity in Fallon

This chart illustrates the average monthly humidity levels in Fallon, 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 Fallon is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%87%84%78%64%56%44%34%41%60%81%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fallon

In Fallon 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 Fallon, you can check the information here.

Maximum UV Index Levels in Fallon for December

The chart shows the monthly maximum UV Index (UVI) for Fallon 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 Fallon typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589111212119743
Data source: Fallon 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 Fallon Compares to Other Months

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

This table compares monthly weather conditions in Fallon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)29 mm (1.2 inches)85%moderate
February Weather5°C (42°F)26 mm (1.0 inches)87%moderate
March Weather9°C (49°F)28 mm (1.1 inches)84%very high
April Weather14°C (57°F)12 mm (0.5 inches)78%very high
May Weather18°C (65°F)17 mm (0.7 inches)64%extreme
June Weather25°C (77°F)4 mm (0.2 inches)56%extreme
July Weather29°C (85°F)2 mm (0.1 inches)44%extreme
August Weather28°C (83°F)2 mm (0.1 inches)34%extreme
September Weather22°C (72°F)3 mm (0.1 inches)41%very high
October Weather13°C (55°F)16 mm (0.6 inches)60%high
November Weather7°C (45°F)14 mm (0.5 inches)81%moderate
December Weather2°C (37°F)24 mm (0.9 inches)82%moderate

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