December Weather in Hydro, United States

Last updated: June 24, 2025

In December, the average temperature in Hydro, United States is a cool 6°C (43°F). Expect minimums of -10°C (15°F) and maximums reaching 27°C (81°F). The weather brings about 30 mm (1.2 in) of precipitation over just 3 days, coupled with an average humidity of 84%—perfect for cozying up indoors!

December Temperature in Hydro

In December, in Hydro, the average temperature is 6°C (43°F). The maximum can reach 27°C (81°F), while the minimum can be as low as -10°C (15°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Hydro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hydro, December typically has an average temperature of 6°C (43°F), with highs reaching up to 27°C (81°F) and lows dropping to around -10°C (15°F).

Data source: Temperature data for Hydro generated using information from the Copernicus Climate Change Service.

December Precipitation in Hydro

In Hydro in December, the precipitation amount is 30 mm (1.2 in) over the course of 3 days.

December Precipitation Trends in Hydro

The chart displays monthly precipitation patterns in Hydro, 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 Hydro, December typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 3 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Hydro

In Hydro in December, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.

December Average Humidity in Hydro

This chart illustrates the average monthly humidity levels in Hydro, 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 Hydro is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hydro

In Hydro 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 Hydro, you can check the information here.

Maximum UV Index Levels in Hydro for December

The chart shows the monthly maximum UV Index (UVI) for Hydro 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 Hydro typically reaches 3, which falls under the moderate exposure category.

Data source: Hydro 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 Hydro Compares to Other Months

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

This table compares monthly weather conditions in Hydro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	37 mm (1.5 inches)	76%	moderate
February Weather	4°C (39°F)	34 mm (1.3 inches)	76%	high
March Weather	11°C (53°F)	72 mm (2.8 inches)	70%	very high
April Weather	15°C (59°F)	92 mm (3.6 inches)	72%	very high
May Weather	20°C (69°F)	134 mm (5.3 inches)	82%	extreme
June Weather	26°C (79°F)	85 mm (3.3 inches)	82%	extreme
July Weather	28°C (83°F)	44 mm (1.7 inches)	80%	extreme
August Weather	27°C (81°F)	51 mm (2.0 inches)	72%	extreme
September Weather	24°C (75°F)	72 mm (2.8 inches)	64%	very high
October Weather	16°C (61°F)	78 mm (3.1 inches)	71%	high
November Weather	9°C (49°F)	23 mm (0.9 inches)	81%	moderate
December Weather	6°C (43°F)	30 mm (1.2 inches)	84%	moderate