January Weather in Pasadena Hills, United States

Last updated: June 24, 2025

In January, the average temperature in Pasadena Hills, United States hovers around 0°C (32°F), providing a chilly, yet invigorating climate. Temperatures can plunge to a brisk -22°C (-7°F) at times, while occasionally peaking at a mild 19°C (67°F). Visitors can expect approximately 76 mm (3.0 in) of precipitation over 8 days, contributing to the region's average humidity of 82%. Bundle up and enjoy the unique atmosphere!

January Temperature in Pasadena Hills

In January in Pasadena Hills, the average temperature is 0°C (32°F). Maximums can reach 19°C (67°F) and minimums can be as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold conditions.

January Weather in Pasadena Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Pasadena Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pasadena Hills, January typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (67°F) and lows dropping to around -22°C (-7°F).

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

January Precipitation in Pasadena Hills

In Pasadena Hills in January, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 days.

January Precipitation Trends in Pasadena Hills

The chart displays monthly precipitation patterns in Pasadena Hills, 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 Pasadena Hills, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Pasadena Hills

In Pasadena Hills in January, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.

January Average Humidity in Pasadena Hills

This chart illustrates the average monthly humidity levels in Pasadena Hills, 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 Pasadena Hills is approximately 82%, 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 Pasadena Hills

In Pasadena Hills in January, 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 Pasadena Hills, you can check the information here.

Maximum UV Index Levels in Pasadena Hills for January

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

Data source: Pasadena Hills 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 Pasadena Hills Compares to Other Months

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

This table compares monthly weather conditions in Pasadena Hills, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	76 mm (3.0 inches)	82%	moderate
February Weather	2°C (35°F)	80 mm (3.2 inches)	80%	moderate
March Weather	8°C (47°F)	131 mm (5.2 inches)	80%	high
April Weather	13°C (55°F)	129 mm (5.1 inches)	80%	very high
May Weather	20°C (68°F)	145 mm (5.7 inches)	82%	very high
June Weather	25°C (77°F)	101 mm (4.0 inches)	83%	extreme
July Weather	26°C (80°F)	97 mm (3.8 inches)	81%	very high
August Weather	25°C (76°F)	130 mm (5.1 inches)	80%	very high
September Weather	22°C (73°F)	56 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	105 mm (4.1 inches)	76%	high
November Weather	7°C (44°F)	75 mm (2.9 inches)	85%	moderate
December Weather	4°C (39°F)	59 mm (2.3 inches)	86%	moderate