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December Weather in Welch, United States

Last updated: June 24, 2025

In December, the average temperature in Welch, United States hovers around 4°C (40°F), with a possible chill dipping as low as -15°C (5°F) and warming up to a pleasant 19°C (67°F). Expect 120 mm (4.7 in) of precipitation spread over 11 days, contributing to a high average humidity of 86%. Be prepared for a distinctly cool and damp atmosphere!

December Temperature in Welch

In December, in Welch, the average temperature is 4°C (40°F), with maximums reaching 19°C (67°F) and minimums plummeting to -15°C (5°F). Travelers should prepare for a wide range of temperatures and layers are essential for comfort.

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

The chart illustrates December temperature patterns in Welch, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Welch, December typically has an average temperature of 4°C (40°F), with highs reaching up to 19°C (67°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec354146546369737268584440
Data source: Temperature data for Welch 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 Welch

In Welch in December, the precipitation amount is 120 mm (4.7 in) during a span of 11 days.

December Precipitation Trends in Welch

The chart displays monthly precipitation patterns in Welch, 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 Welch, December typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec9916112612914312682969112379120
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Welch

In Welch in December humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.

December Average Humidity in Welch

This chart illustrates the average monthly humidity levels in Welch, 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 Welch 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 Welch

In Welch 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 Welch, you can check the information here.

Maximum UV Index Levels in Welch for December

The chart shows the monthly maximum UV Index (UVI) for Welch 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 Welch typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Welch 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 Welch Compares to Other Months

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

This table compares monthly weather conditions in Welch, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)99 mm (3.9 inches)87%moderate
February Weather5°C (41°F)161 mm (6.3 inches)87%high
March Weather8°C (46°F)126 mm (5.0 inches)86%very high
April Weather12°C (54°F)129 mm (5.1 inches)84%very high
May Weather17°C (63°F)143 mm (5.6 inches)83%extreme
June Weather20°C (69°F)126 mm (5.0 inches)83%extreme
July Weather23°C (74°F)82 mm (3.2 inches)79%extreme
August Weather22°C (72°F)96 mm (3.8 inches)66%very high
September Weather20°C (68°F)91 mm (3.6 inches)68%very high
October Weather14°C (58°F)123 mm (4.9 inches)78%high
November Weather7°C (44°F)79 mm (3.1 inches)89%moderate
December Weather4°C (40°F)120 mm (4.7 inches)86%moderate

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