December Weather in South Hadley, United States

Last updated: June 24, 2025

In December in South Hadley, United States, the average temperature hovers around 0°C (33°F). You can expect the mercury to dip as low as -21°C (-5°F) and occasionally climb to a comfortable 17°C (63°F). Prepare for a wet season, with 119 mm (4.7 in) of precipitation over approximately 10 days. The air remains quite humid, with an average humidity level of 84%.

December Temperature in South Hadley

In December in South Hadley, the average temperature is 0°C (33°F). Maximum temperatures can reach 17°C (63°F), while minimum temperatures can drop as low as -21°C (-5°F). It's important to pack accordingly and prepare for a wide range of temperatures if you're planning to travel during this time.

December Weather in South Hadley: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in South Hadley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Hadley, December typically has an average temperature of 0°C (33°F), with highs reaching up to 17°C (63°F) and lows dropping to around -21°C (-5°F).

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

December Precipitation in South Hadley

In South Hadley in December, the total precipitation amount is 119 mm (4.7 in) over the span of 10 days.

December Precipitation Trends in South Hadley

The chart displays monthly precipitation patterns in South Hadley, 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 South Hadley, December typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 10 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 South Hadley

In South Hadley in December humidity is 84%. With average temperature 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less enjoyable and travel plans challenging.

December Average Humidity in South Hadley

This chart illustrates the average monthly humidity levels in South Hadley, 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 South Hadley 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 South Hadley

In South Hadley in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in South Hadley, you can visit Hourly UV Index in South Hadley.

Maximum UV Index Levels in South Hadley for December

The chart shows the monthly maximum UV Index (UVI) for South Hadley 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 South Hadley typically reaches 2, which falls under the low exposure category.

Data source: South Hadley 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 South Hadley Compares to Other Months

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

This table compares monthly weather conditions in South Hadley, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	74 mm (2.9 inches)	89%	moderate
February Weather	0°C (32°F)	91 mm (3.6 inches)	88%	moderate
March Weather	3°C (37°F)	82 mm (3.2 inches)	86%	high
April Weather	9°C (48°F)	130 mm (5.1 inches)	84%	very high
May Weather	15°C (59°F)	99 mm (3.9 inches)	76%	very high
June Weather	20°C (69°F)	78 mm (3.1 inches)	72%	very high
July Weather	23°C (74°F)	144 mm (5.7 inches)	66%	very high
August Weather	23°C (73°F)	81 mm (3.2 inches)	64%	very high
September Weather	19°C (66°F)	97 mm (3.8 inches)	72%	very high
October Weather	13°C (55°F)	142 mm (5.6 inches)	81%	high
November Weather	5°C (41°F)	92 mm (3.6 inches)	87%	moderate
December Weather	0°C (33°F)	119 mm (4.7 inches)	84%	low