January Weather in Sweeny, United States

Last updated: June 24, 2025

In Sweeny, United States, the average temperature in January hovers around 13°C (57°F). However, be prepared for a range of weather conditions, as the minimum can dip to -6°C (22°F) while the maximum can soar to 27°C (81°F). During this month, expect about 75 mm (2.9 in) of precipitation spread over 8 days, with an average humidity level of 78%. Stay equipped for a variety of experiences!

January Temperature in Sweeny

In January in Sweeny, the average temperature is 13°C (57°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as -6°C (22°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly!

January Weather in Sweeny: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sweeny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sweeny, January typically has an average temperature of 13°C (57°F), with highs reaching up to 27°C (81°F) and lows dropping to around -6°C (22°F).

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

January Precipitation in Sweeny

In Sweeny in January, the precipitation amount is 75 mm (2.9 in) over a span of 8 days.

January Precipitation Trends in Sweeny

The chart displays monthly precipitation patterns in Sweeny, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Sweeny, January typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Sweeny

In Sweeny in January, humidity is 78%. With an average temperature of 13°C (57°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities a bit uncomfortable and requiring a light jacket to stay warm while exploring.

January Average Humidity in Sweeny

This chart illustrates the average monthly humidity levels in Sweeny, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Sweeny is approximately 78%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Sweeny

In Sweeny in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sweeny.

Maximum UV Index Levels in Sweeny for January

The chart shows the monthly maximum UV Index (UVI) for Sweeny in January, 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 January, the maximum UV index in Sweeny typically reaches 5, which falls under the moderate exposure category.

Data source: Sweeny January 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 January Weather in Sweeny Compares to Other Months

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

This table compares monthly weather conditions in Sweeny, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (57°F)	75 mm (2.9 inches)	78%	moderate
February Weather	15°C (60°F)	68 mm (2.7 inches)	81%	very high
March Weather	19°C (67°F)	70 mm (2.8 inches)	76%	very high
April Weather	22°C (72°F)	71 mm (2.8 inches)	79%	extreme
May Weather	26°C (79°F)	147 mm (5.8 inches)	79%	extreme
June Weather	28°C (83°F)	159 mm (6.3 inches)	74%	extreme
July Weather	29°C (84°F)	151 mm (6.0 inches)	71%	extreme
August Weather	29°C (85°F)	169 mm (6.6 inches)	68%	extreme
September Weather	27°C (81°F)	174 mm (6.9 inches)	73%	extreme
October Weather	23°C (74°F)	81 mm (3.2 inches)	75%	very high
November Weather	18°C (64°F)	78 mm (3.1 inches)	78%	high
December Weather	15°C (60°F)	88 mm (3.5 inches)	84%	moderate