January Weather in San Manuel, United States

Last updated: June 24, 2025

In January, the average temperature in San Manuel, United States hovers around 9°C (48°F), with a minimum dipping to a brisk -8°C (17°F) and a maximum reaching a pleasant 22°C (72°F). Expect about 43 mm (1.7 in) of precipitation spread over 5 days, contributing to an average humidity of 76% that gives the air a refreshing feel.

January Temperature in San Manuel

In January in San Manuel, the average temperature is 9°C (48°F). Maximums can reach 22°C (72°F) and minimums can be as low as -8°C (17°F). This makes it advisable to pack layers to stay comfortable while exploring the diverse climate conditions.

January Weather in San Manuel: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Manuel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Manuel, January typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (72°F) and lows dropping to around -8°C (17°F).

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

January Precipitation in San Manuel

In San Manuel in January, the precipitation amount is 43 mm (1.7 in) over the course of 5 days.

January Precipitation Trends in San Manuel

The chart displays monthly precipitation patterns in San Manuel, 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 San Manuel, January typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 5 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 San Manuel

In San Manuel in January humidity is 76%. With an average temperature of 9°C (48°F), this humidity feels like a chilly embrace, making outdoor activities feel damp and brisk, potentially leaving you feeling colder than the temperature suggests.

January Average Humidity in San Manuel

This chart illustrates the average monthly humidity levels in San Manuel, 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 San Manuel is approximately 76%, 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 San Manuel

In San Manuel 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 San Manuel.

Maximum UV Index Levels in San Manuel for January

The chart shows the monthly maximum UV Index (UVI) for San Manuel 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 San Manuel typically reaches 5, which falls under the moderate exposure category.

Data source: San Manuel 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 San Manuel Compares to Other Months

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

This table compares monthly weather conditions in San Manuel, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	43 mm (1.7 inches)	76%	moderate
February Weather	10°C (50°F)	55 mm (2.2 inches)	79%	high
March Weather	13°C (56°F)	31 mm (1.2 inches)	67%	very high
April Weather	19°C (66°F)	5 mm (0.2 inches)	55%	extreme
May Weather	22°C (73°F)	8 mm (0.3 inches)	40%	extreme
June Weather	28°C (83°F)	14 mm (0.6 inches)	33%	extreme
July Weather	28°C (82°F)	112 mm (4.4 inches)	34%	extreme
August Weather	27°C (81°F)	92 mm (3.6 inches)	48%	extreme
September Weather	25°C (77°F)	43 mm (1.7 inches)	64%	extreme
October Weather	20°C (68°F)	21 mm (0.8 inches)	67%	very high
November Weather	15°C (59°F)	24 mm (0.9 inches)	77%	high
December Weather	9°C (49°F)	43 mm (1.7 inches)	82%	moderate