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December Weather in Blair, United States

Last updated: June 24, 2025

The average temperature in Blair, United States during December is 7°C (45°F). Expect a minimum of -8°C (18°F) and a maximum of 29°C (84°F) throughout the month. With precipitation totaling 26 mm (1.0 in) over 2 days, you might want to keep an umbrella handy. Furthermore, the average humidity lingers around 84%, adding a touch of dampness to the air.

December Temperature in Blair

In December, in Blair, the average temperature is 7°C (45°F). The maximum can reach 29°C (84°F), while the minimum can be as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Blair, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blair, December typically has an average temperature of 7°C (45°F), with highs reaching up to 29°C (84°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec404255617180848376635145
Data source: Temperature data for Blair 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 Blair

In Blair in December, the precipitation amount is 26 mm (1.0 in) over the course of 2 days.

December Precipitation Trends in Blair

The chart displays monthly precipitation patterns in Blair, 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 Blair, December typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec3627648312566293684741926
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Blair

In Blair in December, humidity is 84%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm while exploring the sights.

December Average Humidity in Blair

This chart illustrates the average monthly humidity levels in Blair, 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 Blair is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Blair

In Blair 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 Blair for better planning.

Maximum UV Index Levels in Blair for December

The chart shows the monthly maximum UV Index (UVI) for Blair 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 Blair typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Blair 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 Blair Compares to Other Months

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

This table compares monthly weather conditions in Blair, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)36 mm (1.4 inches)76%moderate
February Weather5°C (42°F)27 mm (1.0 inches)76%high
March Weather13°C (55°F)64 mm (2.5 inches)70%very high
April Weather16°C (61°F)83 mm (3.3 inches)72%very high
May Weather22°C (71°F)125 mm (4.9 inches)82%extreme
June Weather27°C (81°F)66 mm (2.6 inches)82%extreme
July Weather29°C (85°F)29 mm (1.1 inches)80%extreme
August Weather28°C (83°F)36 mm (1.4 inches)72%extreme
September Weather24°C (76°F)84 mm (3.3 inches)64%very high
October Weather17°C (63°F)74 mm (2.9 inches)71%high
November Weather11°C (51°F)19 mm (0.8 inches)81%moderate
December Weather7°C (45°F)26 mm (1.0 inches)84%moderate

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