January Weather in Holtville, United States

Last updated: June 24, 2025

In January, the average temperature in Holtville, United States hovers around 9°C (48°F). Expect a range where the minimum can dip to -9°C (16°F) and the maximum can reach 26°C (80°F). During this time, you can anticipate approximately 122 mm (4.8 in) of precipitation over 9 days, accompanied by an average humidity of 85%.

January Temperature in Holtville

In January in Holtville, the average temperature is 9°C (48°F). The maximum can reach 26°C (80°F), while the minimum can drop as low as -9°C (16°F). Be prepared for a range of temperatures when traveling, so pack accordingly for both warm and cold weather.

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

The chart illustrates January temperature patterns in Holtville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holtville, January typically has an average temperature of 9°C (48°F), with highs reaching up to 26°C (80°F) and lows dropping to around -9°C (16°F).

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

January Precipitation in Holtville

In Holtville in January, the precipitation amount is 122 mm (4.8 in) over a span of 9 days.

January Precipitation Trends in Holtville

The chart displays monthly precipitation patterns in Holtville, 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 Holtville, January typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 9 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 Holtville

In Holtville in January humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.

January Average Humidity in Holtville

This chart illustrates the average monthly humidity levels in Holtville, 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 Holtville is approximately 85%, 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 Holtville

In Holtville in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Holtville for better planning.

Maximum UV Index Levels in Holtville for January

The chart shows the monthly maximum UV Index (UVI) for Holtville 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 Holtville typically reaches 4, which falls under the moderate exposure category.

Data source: Holtville 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 Holtville Compares to Other Months

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

This table compares monthly weather conditions in Holtville, 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)	122 mm (4.8 inches)	85%	moderate
February Weather	12°C (54°F)	147 mm (5.8 inches)	84%	high
March Weather	15°C (60°F)	129 mm (5.1 inches)	82%	very high
April Weather	18°C (65°F)	137 mm (5.4 inches)	82%	very high
May Weather	23°C (73°F)	128 mm (5.0 inches)	81%	extreme
June Weather	26°C (78°F)	146 mm (5.7 inches)	77%	extreme
July Weather	27°C (81°F)	116 mm (4.6 inches)	77%	extreme
August Weather	27°C (81°F)	111 mm (4.4 inches)	72%	extreme
September Weather	25°C (78°F)	93 mm (3.6 inches)	73%	very high
October Weather	20°C (69°F)	119 mm (4.7 inches)	73%	very high
November Weather	13°C (55°F)	82 mm (3.2 inches)	85%	high
December Weather	11°C (51°F)	148 mm (5.8 inches)	88%	moderate