January Weather in Portales, United States

Last updated: June 24, 2025

In Portales, United States, the average temperature in January hovers around 4°C (40°F). Expect temperatures to range from a frigid -14°C (7°F) to a pleasant 23°C (74°F). During this month, precipitation totals 19 mm (0.7 in) over approximately 2 days, accompanied by an average humidity of 74%. Enjoy your visit!

January Temperature in Portales

In January in Portales, the average temperature is 4°C (40°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -14°C (7°F). This variability in temperatures makes it advisable to pack layers for your travels.

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

The chart illustrates January temperature patterns in Portales, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portales, January typically has an average temperature of 4°C (40°F), with highs reaching up to 23°C (74°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Portales

In Portales in January, the precipitation amount is 19 mm (0.7 in) over a span of 2 days.

January Precipitation Trends in Portales

The chart displays monthly precipitation patterns in Portales, 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 Portales, January typically receives around 19 mm (0.7 inches) of precipitation spread over approximately 2 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 Portales

In Portales in January humidity is 74%. With an average temperature of 4°C (40°F), this humidity feels like a chilly embrace that makes every breath a little heavier, which can be quite uncomfortable for traveling.

January Average Humidity in Portales

This chart illustrates the average monthly humidity levels in Portales, 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 Portales is approximately 74%, 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 Portales

In Portales 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 Portales.

Maximum UV Index Levels in Portales for January

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

Data source: Portales 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 Portales Compares to Other Months

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

This table compares monthly weather conditions in Portales, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	19 mm (0.7 inches)	74%	moderate
February Weather	6°C (43°F)	12 mm (0.5 inches)	75%	high
March Weather	11°C (53°F)	28 mm (1.1 inches)	61%	very high
April Weather	15°C (60°F)	19 mm (0.7 inches)	61%	extreme
May Weather	21°C (70°F)	33 mm (1.3 inches)	69%	extreme
June Weather	25°C (78°F)	45 mm (1.8 inches)	74%	extreme
July Weather	27°C (80°F)	28 mm (1.1 inches)	75%	extreme
August Weather	26°C (78°F)	47 mm (1.9 inches)	78%	extreme
September Weather	22°C (72°F)	36 mm (1.4 inches)	76%	very high
October Weather	15°C (59°F)	54 mm (2.1 inches)	76%	very high
November Weather	10°C (50°F)	11 mm (0.4 inches)	80%	high
December Weather	6°C (43°F)	7 mm (0.3 inches)	77%	moderate